navicat连接本地localhost 1251报错

 1.先通过命令行进入mysql的root账户：

 C:\Program Files\MySQL\MySQL Server 8.0\bin>mysql -uroot -p

 2.更改加密方式：

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

 3.更改密码：该例子中 123为新密码

 ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';