[英]How to add a specific exception in symfony2 routing
如何在symfony2路由中添加特定的異常。
contact:
path: /contact
defaults: { _controller: AcmeDemoBundle:Main:contact }
condition: "(context.getMethod() in ['GET', 'HEAD'] and request.headers.get('User-Agent') matches '/firefox/i') ?: [exception]"
是否應該引發異常不是路由決策。 這是一個合理的決定,因此應將其放置在您的控制器中。
從您的路線中刪除condition
,然后在您的控制器中進行設置:
public function contactAction(Request $request)
{
if (
!in_array(array('GET', 'HEAD'), $request->getMethod())
|| 1 !== preg_match('/firefox/i', $request->headers->get('User-Agent'))
) {
throw new BadRequestHttpException('Bad request');
}
}
您可以使用ExceptionResponseListener來根據需要發送自定義響應。
// src/Acme/AppBundle/EventListener/ExceptionResponseListener.php
<?php
namespace Acme\AppBundle\EventListener;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpKernel\Exception\NotFoundtHttpException;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
class ExceptionResponseListener
{
/**
* @param GetResponseForExceptionEvent $event
*/
public function onKernelResponse(GetResponseForExceptionEvent $event)
{
$request = $event->getRequest();
$routeName = $request->get('_route');
// Check if it's the good route (or namespace ..)
if ('your_route' !== $routeName) {
return;
}
$exception = $event->getException();
$statusCode = 500;
$message = $exception->getMessage();
// Choose the Exception you intercept.
if ($exception instanceof NotFoundHttpException) {
$statusCode = $exception->getStatusCode();
$message = $exception->getMessage();
}
// Create your own response
$content = ['error' => $message];
$response = new JsonResponse($content, $statusCode);
// Update the event response
$event->setResponse($response);
}
}
然后,將其注冊為服務:
parameters:
acme.kernel.listener.exception_listener.class:
Acme\AppBundle\EventListener\ExceptionResponseListener
services:
acme.kernel.listener.exception_listener:
class: %acme.kernel.listener.exception_listener.class%
tags:
- {name: kernel.event_listener, event: kernel.exception, method: onKernelResponse}
這樣,您可以發送自己的。 此處的文檔: http : //symfony.com/doc/current/cookbook/event_dispatcher/event_listener.html
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