没有数据库访问权限

10:41:40 ERROR: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES) in D:\xampp\zentao\framework\base\router.class.php on line 2145, last called by D:\xampp\zentao\framework\base\router.class.php on line 2103 through function connectByPDO.
in D:\xampp\zentao\framework\base\router.class.php on line 2195 when visiting