MySQL-Server-8.0连接出现“错误1251“解决办法

按顺序执行下面三行语句，每条必须OK再执行下一条！

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

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '数据库密码';

FLUSH PRIVILEGES;