一 、2058错误

通过命令行进入MySQL，执行如下命令：

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root'

截图：

二、1251错误

通过命令行进入MySQL，执行如下命令：

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root' PASSWORD EXPIRE NEVER; 
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root'; 
FLUSH PRIVILEGES; #刷新权限 

截图：

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'root' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.05 sec)mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';
Query OK, 0 rows affected (0.01 sec)mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)mysql>