遇到错误：

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ERROR 1862 (HY000): Your password has expired. To log in you must  
change it using a client that supports expired passwords.

原因是： 

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MySQL 5.6 introduces password-expiration capability, to enable database administrators to expire account passwords and require users to reset their password.

所以只需重新修改下密码即可，修改方式如下： 

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以root权限登录mysql：（这里我的账户是root，密码也是root）  
mysql -uroot -proot  
然后更改密码：  
SET PASSWORD = PASSWORD('root');

OK,可以正常使用了。