The last packet successfully received from the server was 2,272 milliseconds ago. The last packet sent successfully to the server was 2,258 milliseconds ago.

报错

org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 2,272 milliseconds ago.  The last packet sent successfully to the server was 2,258 milliseconds ago.
### The error may exist in pers/gs/dao/UserMapper.xml
### The error may involve pers.gs.dao.UserDao.getUserList
### The error occurred while executing a query
### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 2,272 milliseconds ago.  The last packet sent successfully to the server was 2,258 milliseconds ago.

原因

在网上查询许多，没有解决问题，最后考虑到我的数据库连接字符串

jdbc:mysql://localhost:3306/mybatis?useSSL=true&userUnicode=true&characterEncoding=UTF-8

解决方法

将useSSL=true改为useSSL=false

The last packet successfully received from the server was 2,272 milliseconds ago. The last packet sent successfully to the server was 2,258 milliseconds ago.

原文：https://www.cnblogs.com/fengxiaoqi/p/12932764.html