因此，经过大量研究，我找到了正确的方法。您需要使用入口点服务，并在防火墙配置中对其进行定义。

此方法 不会
与您在防火墙配置中指定的用于登录的默认页面设置混淆。

编码

security.yml：

firewalls:    main:        entry_point: entry_point.user_login #or whatever you name your service        pattern: ^/        form_login:        # ...

src / Acme / UserBundle / config / services.yml

services:    entry_point.user_login:        class: AcmeUserBundleServiceLoginEntryPoint        arguments: [ @router ] #I am going to use this for URL generation since I will be redirecting in my service

src / Acme / UserBundle / Service / LoginEntryPoint.php：

namespace AcmeUserBundleService;use SymfonyComponentSecurityHttpEntryPointAuthenticationEntryPointInterface,    SymfonyComponentSecurityCoreExceptionAuthenticationException,    SymfonyComponentHttpFoundationRequest,    SymfonyComponentHttpFoundationRedirectResponse;class LoginEntryPoint implements AuthenticationEntryPointInterface{    protected $router;    public function __construct($router)    {        $this->router = $router;    }        public function start(Request $request, AuthenticationException $authException = null)    {        $session = $request->getSession();        // I am choosing to set a FlashBag message with my own custom message.        // Alternatively, you could use AuthenticationException's generic message         // by calling $authException->getMessage()        $session->getFlashBag()->add('warning', 'You must be logged in to access that page');        return new RedirectResponse($this->router->generate('login'));    }}

login.html.twig：

{# bootstrap ready for your convenience ;] #}{% if app.session.flashbag.has('warning') %}    {% for flashMessage in app.session.flashbag.get('warning') %}        <div > <button type="button"  data-dismiss="alert">&times;</button> {{ flashMessage }}        </div>    {% endfor %}{% endif %}