refactor: 체크 예외에 대해서 명시적으로 commit 하도록 변경

Author: junhaa

app/src/main/java/com/techcourse/aop/TransactionHandler.java

@@ -76,21 +76,31 @@ private Throwable handleException(final Connection conn, final InvocationTargetE
 
         if (targetException instanceof RuntimeException || targetException instanceof Error) {
             rollback(conn, e);
+            return targetException;
         }
 
+        commit(conn, e);
         return targetException;
     }
 
     private void rollback(Connection conn, Exception originalException) {
         try {
             conn.rollback();
-
         } catch (SQLException rollbackEx) {
             log.error("Rollback failed", rollbackEx);
             originalException.addSuppressed(rollbackEx);
         }
     }
 
+    private void commit(Connection conn, Exception originalException) {
+        try {
+            conn.commit();
+        } catch (SQLException commitEx) {
+            log.error("Commit failed", commitEx);
+            originalException.addSuppressed(commitEx);
+        }
+    }
+
     private void cleanUpConnection(final Connection conn, final boolean originalAutoCommit) {
         if (conn == null) {
             return;