【已解决】1251 - Client does not support authentication protocol requested by server； consider upgrading

mysql> mysql -u root -p  #登陆mysql

mysql> use mysql;	# 切换mysql数据库

mysql> select user,plugin from user where user='root';  #查看root的加密方式

mysql> alter user 'root'@'localhost' identified with mysql_native_password by '123456';

mysql> flush privileges;