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HomeDatabaseMysql TutorialWindows下MySql错误代码1045的解决方法_MySQL

复制代码 代码如下:错误代码 1045
Access denied for user 'root'@'localhost' (using password:YES)

解决办法是重新设置root用户密码,在Windows平台下操作步骤如下:
1、以系统管理员身份登录到系统;
2、如果MySQL服务器正在运行,停止它。
      如果是作为Windows服务运行的服务器,进入服务管理器:开始菜单->控制面板->管理工具->服务
      如果服务器不是作为服务而运行的,可能需要使用任务管理器来强制停止它。
3、创建1个文本文件,并将下述命令置于单一行中:
复制代码 代码如下:SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyNewPassword');


用任意名称保存该文件。在本例中,该文件为C:/mysql-init.txt。
4、进入DOS命令提示:开始菜单->运行-> cmd
      假定你已将MySQL安装到C:/mysql。如果你将MySQL安装到了另一位置,请对下述命令进行相应的调整。
      在DOS命令提示符下,执行命令:
复制代码 代码如下:C:/> C:/mysql/bin/mysqld-nt --init-file=C:/mysql-init.txt
      在服务器启动时,执行由“--init-file”选项(作用:在启动时从指定的文件中读取SQL命令)命名的文件的内容,更改根用户密码。当服务器成功启动后,应删除C:/mysql-init.txt。
5、停止MySQL服务器,然后在正常模式下重启它。如果以服务方式运行服务器,应从Windows服务窗口启动它。如果以手动方式启动了服务器,能够像正常情形下一样使用命令。


附其他方法:

方法一:
复制代码 代码如下:
# /etc/init.d/mysql stop 
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking & 
# mysql -u root mysql 
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root'; 
mysql> FLUSH PRIVILEGES; 
mysql> quit 
# /etc/init.d/mysql restart 
# mysql -uroot -p 
Enter password:  
mysql> 

方法二: 

直接使用/etc/mysql/debian.cnf文件中[client]节提供的用户名和密码: 
复制代码 代码如下:
# mysql -udebian-sys-maint -p 
Enter password:  
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root'; 
mysql> FLUSH PRIVILEGES; 
mysql> quit 
# mysql -uroot -p 
Enter password:  
mysql> 

另一个方法
Windows:

1. 管理员登陆系统,停止mysql服务或者结束mysqld-nt进程
2. 进入命令行,来到mysql的安装目录.假设安装目录为 d:/mysql/ , CMD进入命令行
3. 运行 d:/mysql/bin/mysqld-nt --skip-grant-tables 启动mysql,关闭权限的检查
4. 运行 d:/mysql/bin/mysqladmin -u root flush-privileges password "newpassword" 重设root密码
5. 重新启动mysql服务

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