Question

我正在尝试为异常注册一个监听器，但它永远不会被调用，这是我的代码：

app.yml：

services:
    kernel.listener.exception_listener:
        class: Appointmed\ApiBundle\EventListener\AppointmedExceptionEventListener
        tags:
            - { name: kernel.event_listener, event: kernel.exception, method: onKernelException }

的Acme / ApiBundle /事件监听/ AcmeExceptionEventListener.php

<?php
/**
 * Created by PhpStorm.
 * User: danielrodriguez
 * Date: 28/02/14
 * Time: 19:14
 */

namespace Acme\ApiBundle\EventListener;

use JMS\Serializer\Serializer;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;

class AcmeExceptionEventListener
{
    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        // You get the exception object from the received event
        $exception = $event->getException();
        $status = new Status($exception->getCode(), $exception->getMessage());

        // Customize your response object to display the exception details
        $response = new Response();
        $serializer = SerializerBuilder::create()->build();
        $response->setContent($serializer->serialize(array("status" => $status), 'json'));
        $response->sendHeaders(array("ContentType" => "application/json"));

        // HttpExceptionInterface is a special type of exception that
        // holds status code and header details
        if ($exception instanceof HttpExceptionInterface) {
            $response->setStatusCode($exception->getStatusCode());
            $response->headers->replace($exception->getHeaders());
        } else {
            $response->setStatusCode(Response::HTTP_INTERNAL_SERVER_ERROR);
        }

        // Send the modified response object to the event
        $event->setResponse($response);
    }
}

每当我在控制器中抛出异常时，它都不会通过监听器，不知道发生了什么。

我可以意识到的一件事是，如果我故意将config.yml中的类更改为不存在的类，那么一切都是一样的。 e.g。

services:
    kernel.listener.exception_listener:
        class: Appointmed\ApiBundle\EventListener\asdf
        tags:
            - { name: kernel.event_listener, event: kernel.exception, method: onKernelException }

Answer 1

在服务定义中，您将类名称指定为“AppointmedExceptionEventListener”。

但是你编写的那个类是命名空间中的AcmeExceptionEventListener ACME \ ApiBundle \事件监听。如果您解决了这个问题，那么它应该按预期工作。

在symfony2中注册异常监听器

1 个答案: