连接mysql的时候报错Access denied for user: 'root@127.0.0.1' (Using password: YES)

一般是权限问题

解决方法，用root账户进入mysql命令行，输入

GRANT select,insert,update,delete,create,drop ON samp_db.*  TO yourdatabase@127.0.0.1 IDENTIFIED BY 'yourpassword';