MYSQL密码找回和服务重启

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”

   
2. 重新以管理员身份运行cmd,输入net stop mysql

   停止MySQL服务

   

   
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

   
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 rights reserved.

   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 input statement.

   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

   
5. 继续以管理员身份运行cmd,输入net start mysql

   启动MySQL服务

   
6. 以重置后的root密码登录测试，如下图

   mysql -uroot -p123456

   
7.