使用事件侦听器重定向所有"找不到404路由未找到 - NotFoundHttpException"

Question

如何在事件侦听器中触发重定向到特定路由器？

有很多例子,但我找不到一个"GetResponseForExceptionEvent".例如,当我@roter作为参数传递时$this->router....似乎没有这样做.

我检查了这些但我可能错过了一些东西:

• 显示特定路线而不是错误页面(404) - Symfony2
• symfony2:挂钩到NotFoundHttpException以进行重定向
• Symfony2重定向事件监听器？
• Symfony2:在页面加载事件监听器中获取路由
• 如果用户已登录,则重定向

service.yml

services:
    kernel.listener.kernel_request:
        class: Booking\AdminBundle\EventListener\ErrorRedirect
        tags:
            - { name: kernel.event_listener, event: kernel.exception, method: onKernelException }

事件监听器:

namespace Booking\AdminBundle\EventListener;

use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class ErrorRedirect
{
    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        $exception = $event->getException();

        if ($exception instanceof NotFoundHttpException) {
            // redirect to '/' router or '/error'
            //$event->setResponse(...........);
        }
    }
} 

Answer 1

你有2个选择:

• 使用事件监听器
• 使用匹配所有不存在的路由的路由,并在控制器中触发操作.

如果有效,请告诉我.

选项1

注意:查看事件监听器的Symfony2重定向

1 将路由器传递给您的事件监听器:

kernel.listener.kernel_request:
       class: Booking\AdminBundle\EventListener\ErrorRedirect
       arguments:
           router: "@router"
       tags:
           - { name: kernel.event_listener, event: kernel.exception, method: onKernelException }

2 使用侦听器中的路由器重定向用户:

namespace Booking\AdminBundle\EventListener;

use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Bundle\FrameworkBundle\Routing\Router;

class ErrorRedirect
{
    /**
     * Holds Symfony2 router
     *
     *@var Router
     */
    protected $router;

    /**
     * @param Router
     */
    public function __construct(Router $router)
    {
        $this->router = $router;
    }


    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        $exception = $event->getException();

        if ($exception instanceof NotFoundHttpException) {

            /** Choose your router here */
            $route = 'route_name';

            if ($route === $event->getRequest()->get('_route')) {
                return;
            }

            $url = $this->router->generate($route);
            $response = new RedirectResponse($url);
            $event->setResponse($response);

        }
    }
} 

选项2

您可以创建一个匹配所有不存在的路由的特殊路由; 然后,您可以在您选择的控制器中按照您想要的方式处理重定向,这里是PageNotFoundController:

1 在app/config/routing.yml的末尾

pageNotFound:
    pattern:  /{path}
    defaults: { _controller: AcmeDemoBundle:PageNotFound:pageNotFound, path: '' }
    requirements:
        path: .*

2

<?php

namespace Acme\DemoBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class PageNotFoundController extends Controller
{

    public function pageNotFoundAction()
    {
        // redirect the way you want

    }

}