Symfony form - 无法收集 POST 值

我在尝试从symfony 2中的简单HTML表单中获取POST值时遇到问题。这是我的控制器方法的作用：

    /**
     * @Route("/process-login/", name="process login")
     * @Method("POST")
     */
    public function processLoginAction()
    {
        $name     = $this->request->request->get('username');
        $password = $this->request->request->get('password');
        $em    = $this->getDoctrine()->getManager();
        $query = $em->createQuery('SELECT u.id FROM AppBundle:Admin u WHERE u.name = :name AND u.password = :password')
                    ->setParameter('name', $name)
                    ->setParameter('password', $password);
        $result = $query->getOneOrNullResult();
        if($result < 1)
        {
            $this->session->getFlashBag()->add('error', 'Incorrect login details');
            $action = $this->redirectToRoute('login');
        }
        else
        {
            $this->session->start();
            $this->session->set('admin', $name);
            $action = $this->redirectToRoute('homepage');
        }
        return $action;
    }

每当我处理表单时，我都会收到错误找不到"POST/进程登录"的路由。

问题可能出在哪里？附言与GET合作