解决MySQL连接报错1251问题

0、客户端MySQL连接报如下错误：

1、通过mysql命令进入数据库

2、修改加密方式：
ALTER USER ‘root’@‘localhost’ IDENTIFIED BY ‘123456’ PASSWORD EXPIRE NEVER;

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456' PASSWORD EXPIRE NEVER;

3、更新密码：
ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘654321’;

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '新密码';

4、刷新：
FLUSH PRIVILEGES;

5、再次连接