ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

?

参考：好文章。mysql 密码错误问题。

http://www.shocr.com/error-1045-28000-access-denied-for-user-root-localhost-using-password-no/