Could not create connection to database server的错误原因

1、使用MyBatis 连接数据库报错

org.apache.ibatis.exceptions.PersistenceException: 
### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
### The error may exist in mappers/UserMapper.xml
### The error may involve com.atguigu.mybatis.mapper.UserMapper.insertUser
### The error occurred while executing an update
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.

2、我这边的错误原因是：数据库和驱动的版本不一致

版本一致后就可以运行成功了

3、感谢费总远程支持