Fatal error: Uncaught mysqli_sql_exception: 由于目标计算机积极拒绝，无法连接。 in C:\xampp\htdocs\Shs\Db\Db.inc.php:22 Stack trace: #0 C:\xampp\htdocs\Shs\Db\Db.inc.php(22): mysqli->__construct('localhost', 'SHS', Object(SensitiveParameterValue), 'shs') #1 C:\xampp\htdocs\ZHanDian\ZHan\xiangqing.php(48): db->__construct('localhost', 'SHS', 'zhanghailin125', 'shs') #2 {main} thrown in C:\xampp\htdocs\Shs\Db\Db.inc.php on line 22