Window+R 输入cmd
登陆数据库:mysql -uroot -p
select user,host from user; 目的为了查看user的root 对应host是什么
对应为localhost
执行ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '你的密码';
root对应的host为%
执行ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '你的密码';
之后测试连接