您应该创建一个侦听kernel.exception事件的侦听器.在该侦听器的onKernelException方法中,您可以检查您的异常,例如

在异常监听器类上

//@R_360_1507@pace declarations
  class YourExceptionListener
  {

      public function onKernelException(GetResponseForExceptionEvent $event)
      {
        $exception =  $event->getException();
        if ($exception instanceof YourException) {
            //create response,set status code etc.
            $event->setResponse($response); //event will stop PRopagating here. Will not call other listeners.
        }
      }
  }

服务声明将是

//services.yML
 kernel.listener.yourlisener:
  class: FQCN\Of\YourExceptionListener
  tags:
    - { name: kernel.event_listener,event: kernel.exception,method: onKernelException }