Access denied for user 'root'@'localhost' (using password: YES)

FILE: D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Db.class.php 　LINE: 164

[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Db.class.php (164) DbMysql->connect(Access denied for user 'root'@'localhost' (using password: YES))
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Driver\Db\DbMysql.class.php (95) Db->initConnect()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Driver\Db\DbMysql.class.php (215) DbMysql->query()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Model.class.php (134) DbMysql->getFields(SHOW COLUMNS FROM `qf_config`)
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Model.class.php (122) Model->flush(qf_config)
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Model.class.php (1185) Model->_checkTableInfo()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Model.class.php (97) Model->db()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Common\common.php (354) Model->__construct(0, )
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\App\Lib\Action\CommonAction.class.php (50) M(config, , )
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\App\Lib\Action\Home\BaseAction.class.php (10) CommonAction->config(config)
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\App\Lib\Action\Home\PublicAction.class.php (6) BaseAction->__construct(switch_m_pc)
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Common\common.php (381) PublicAction->__construct()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\App.class.php (102) A()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\App.class.php (207) App::exec()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Lib\Core\Think.class.php (39) App::run(Home/News)
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Common\runtime.php (242) Think::start()
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\ThinkPHP\ThinkPHP.php (30) require(D:\wwwroot\ybgy888\wwwroot\ThinkPHP\Common\runtime.php)
[26-08-15 00:34:08] D:\wwwroot\ybgy888\wwwroot\index.php (21) require(D:\wwwroot\ybgy888\wwwroot\ThinkPHP\ThinkPHP.php)