SpiderStatus中getPagePerSecond()方法，增加验证逻辑，避免空指针，避免除数为零。#993
Merged
sutra merged 1 commit intocode4craft:developfrom Feb 3, 2021
Merged
SpiderStatus中getPagePerSecond()方法，增加验证逻辑，避免空指针，避免除数为零。#993sutra merged 1 commit intocode4craft:developfrom
sutra merged 1 commit intocode4craft:developfrom
