访问事件侦听器中的路由路径

路由：

user_lock:
    path:     /user/lock/{id}
    defaults: { _controller: SiteMainBundle:Frontend'Default:userLock }
    methods:  [GET]

正如您所知，上面的路由器将创建一个类似htt://mysite.com/app_dev.php/user/lock/66的URL，所以我只需要在下面的事件侦听器中获得它的/user/lock/66部分。我该怎么做？

我试过$request->getBaseUrl()，但$request->getBasePath()没有给我想要的。

YAML

services:
    kernel.listener.kernel_controller:
        class: Site'MainBundle'EventListener'Controller'KernelController
        tags:
            - { name: kernel.event_listener, event: kernel.controller, method: onKernelController }

类别

<?php
namespace Site'MainBundle'EventListener'Controller;
use Symfony'Component'HttpKernel'Event'FilterControllerEvent;
class KernelController
{
    public function onKernelController(FilterControllerEvent $event)
    {
        $request = $event->getRequest();
        $this->writeLog('ROUTE', $request->attributes->get('_route'));
        $this->writeLog('CONTROLLER', $request->attributes->get('_controller'));
        $this->writeLog('ROUTE PARAMETERS', $request->attributes->get('_route_params'));
        $this->writeLog('ROUTE PATH', ??????????????????????????????);
    }
}