MySQL忘记root密码？？重置密码方法

1、 如果不是以管理员身份运行 cmd 执行命令 net stop mysql 会报 “ 发生系统错误 5 拒绝访问 ”

1.     2

2、重新以管理员身份运行cmd,输入net stop mysql

停止MySQL服务

2.      3

3、打开一个cmd窗口输入mysqld--skip-grant-tables，注意这个cmd命令窗口不要关闭

3.     4

4、重新打开一个cmd窗口，运行下面命令

C:\Users\Administrator>mysql

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.7.19 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rightsreserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current inputstatement.

mysql> use mysql

Database changed

mysql> update user set authentication_string=password('123456')where user='root';

Query OK, 0 rows affected, 1 warning (0.06 sec)

Rows matched: 1  Changed: 0  Warnings: 1

mysql>

将mysql的root密码重置为123456

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5、继续以管理员身份运行cmd,输入net start mysql

启动MySQL服务

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6、以重置后的root密码登录测试，如下图

mysql -uroot -p123456