前端请求thinkPHP接口报错。Respnse to preflight request doesn't pass access control check

前端请求thinkPHP接口报错。

报错信息如下所示：

解决： 在ThinkPHP\Library\Think\Controller.class.php中加入

                header('Access-Control-Allow-Origin: http://localhost:8080');     // 前端访问地址

                header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");

                header('Access-Control-Allow-Methods: GET, POST, PUT');

                header('Access-Control-Allow-Credentials: true');