BUG记录，ORM(MyBatis)，Could not get JDBC Connection

(编程新手)

问题描述：

(核心错误提示)

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:

### Error querying database.  Cause:

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot create

PoolableConnectionFactory (Client does not support authentication protocol requested by server; consider upgrading MySQL client)

### The error may exist in com/zwh1730090431/po/StudentMapper.xml

### The error may involve com.zwh1730090431.po.StudentMapper.findStudentById

### The error occurred while executing a query

### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot create PoolableConnectionFactory (Client does not support authentication protocol requested by server; consider upgrading MySQL client)

拿不到连接？

解决办法：

更换高版本jar包。把原来5.x更换为8.x。如下图所示。

问题出现原因：

不知道。

其他触发并解决这个问题的连接：

https://www.jianshu.com/p/582ae6d91154

https://www.cnblogs.com/spec-dog/p/6226212.html

https://blog.csdn.net/wls666/article/details/89886656

https://blog.csdn.net/Ltp_Ltp/article/details/85603199

https://www.cnblogs.com/noino/p/10882598.html

https://www.cnblogs.com/HHR-SUN/p/7580412.html