为服务“ kernel.listener.your_listener_name”检测到循环引用，

问题描述

我在 services.yml

中添加了以下几行

# default configuration for services in *this* file
_defaults:
    # automatically injects dependencies in your services
    autowire: true
    # automatically registers your services as commands,event subscribers,etc.
    autoconfigure: true
    # this means you cannot fetch services directly from the container via $container->get()
    # if you need to do this,you can override this setting on individual services
    #public: false

当运行以下命令 ./ bin / console cach：clear 时，出现以下错误：

  [Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException]                                                                              
  Circular reference detected for service "kernel.listener.your_listener_name",path: "kernel.listener.your_listener_name -> kernel.listener.your_listener_name". 

有关信息，这是服务的定义：

kernel.listener.your_listener_name:
    class: DEL\Bundle\ApiBundle\Exception\ApiException
    tags:
        - { name: kernel.event_listener,event: kernel.exception,method: onKernelException }

这是服务的类：

<?PHP

namespace DEL\Bundle\ApiBundle\Exception;

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

class ApiException extends HttpException
{
    public function __construct($statusCode = 0,$message = null,\Exception $prevIoUs = null,array $headers = array(),$code = 0)
    {
        parent::__construct($statusCode,$message,$prevIoUs,$headers,$code);
    }

    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        // You get the exception object from the received event
        $exception = $event->getException();

        if ($exception instanceof APIExceptionInterface) {
            $xml = new \SimpleXMLElement('<xml/>');
            $error = $xml->addChild('error');
            $error->addChild('id',$exception::ID);
            $error->addChild('error',$exception::GLOBAL_ERROR_MESSAGE);
            $error->addChild('message',$exception->getMessage());
            $message = $xml->asXML();
            // Customize your response object to display the exception details
            $response = new Response();
            $response->setContent($message);
            // 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);
        }
    }
}

请问有解决这个问题的方法吗？

解决方法

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