public function onEventRequest(Application $app, Request $request)
 {
     $matcher = $app->getRouter()->getMatcher();
     $route = $matcher->match($request->getMethod(), $request->getPathInfo());
     if ($route != null) {
         $request->attributes->set('_route', $route);
     }
     if ($matcher->isNeedRedirect()) {
         $url = $matcher->getRedirectUrl();
         $app->setResponse($app->redirect($url, 301));
         $app->stopEventPropagation();
     }
 }