1：进入cmd
2：命令：mysql -u root mysql 回车
3：命令：update user set password=password('新密码') where user='root';最后分号不要丢
4：命令：flush privileges;
5: 重启mysql
图：
【上篇】ERROR 2003 (HY000): Can't connect to MySQL server on 'localhost' (10061)
【下篇】linux下ERROR 1045 (28000): Access denied for user root@localhost (using password: NO)
【下篇】linux下ERROR 1045 (28000): Access denied for user root@localhost (using password: NO)