Warning: PDO::__construct() [pdo.--construct]: [2002] 由于目标计算机积极拒绝,无法连接。 (trying to connect via tcp://127.0.0.1:3306) in D:\wwwroot\jihua15_b8c4u9\web\include\class.Database.php on line 14

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] 由于目标计算机积极拒绝,无法连接。 ' in D:\wwwroot\jihua15_b8c4u9\web\include\class.Database.php:14 Stack trace: #0 D:\wwwroot\jihua15_b8c4u9\web\include\class.Database.php(14): PDO->__construct('mysql:host=127....', 'jihua15', 'UV8PNCtF9zQih0O') #1 D:\wwwroot\jihua15_b8c4u9\web\include\class.Database.php(30): Database->Database() #2 D:\wwwroot\jihua15_b8c4u9\web\index.php(30): Database::Connect() #3 {main} thrown in D:\wwwroot\jihua15_b8c4u9\web\include\class.Database.php on line 14