错误原因：mysql加密规则的改变；
mysql加密规则：mysql_native_password mysql8之前的版本
caching_sha2_password mysql8
解决方法：
- ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER; //修改加密规则
- ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password'; //更新一下用户的密码
- FLUSH PRIVILEGES;//刷新权限
操作示例：
