ubuntu 系统解决mysql连接问题（ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password:

现在终于被我找到了解决方法：

切换到root用户，然后进入mysql 的bin目录后，
root@cps-desktop:/usr/local/mysql/bin# /etc/init.d/mysql stop 
root@cps-desktop:/usr/local/mysql/bin# ./mysqld_safe --user=mysql --skip-grant-tables --skip-networking & 
root@cps-desktop:/usr/local/mysql/bin# ./mysql -u root mysql 
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit;

最后重启数据库：
root@cps-desktop:/usr/local/mysql/bin# /etc/init.d/mysql restart 
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement

mysql>

 set password=password('');

创建  MYSQL  本地用户

grant all privileges on *.* to 'admin'@'%'identified by 'admin' with grant option;
grant all privileges on *.* to 'admin'@localhost identified by 'admin' with grant option;
flush privileges;