mysql中出现 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)的解决办法

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#1.停止mysql数据库/etc/init.d/mysqld stop #2.执行如下命令mysqld_safe --user=mysql --skip-grant-tables --skip-networking & #3.使用root登录mysql数据库mysql -u root mysql #4.更新root密码mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';#最新版MySQL请采用如下SQL：mysql> UPDATE user SET authentication_string=PASSWORD('newpassword') where USER='root'; #5.刷新权限 mysql> FLUSH PRIVILEGES; #6.退出mysqlmysql> quit #7.重启mysql/etc/init.d/mysqld restart #8.使用root用户重新登录mysqlmysql -uroot -p Enter password: <输入新设的密码newpassword>