如果匿名用户无权访问 URL,如何将他们重定向到自定义页面而不是登录页面?
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【中文标题】如果匿名用户无权访问 URL,如何将他们重定向到自定义页面而不是登录页面?【英文标题】:How do I redirect an anonymous user to custom page instead of the login page if they do not have access to a URL? 【发布时间】:2020-04-03 16:26:53 【问题描述】:我为我的 Symfony 5 项目创建了一个登录表单。
当用户无权访问我的管理面板时,我想将匿名用户重定向到自定义页面(而不是登录页面)。
应用程序控制器:
// TestController.php
namespace App\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Routing\Annotation\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\IsGranted;
class TestController extends AbstractController
/**
* @Route("/admin/panel", name="test")
* @IsGranted("ROLE_ADMIN")
*/
public function index()
return $this->render('test/index.html.twig', [
'controller_name' => 'TestController',
]);
还有我的配置设置:
# security.yaml
security:
encoders:
App\Entity\Admin:
algorithm: auto
providers:
admin:
entity:
class: App\Entity\Admin
property: username
firewalls:
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
admin:
pattern: ^/admin/
guard:
authenticators:
- App\Security\AdminLoginFormAuthenticator
logout:
path: app_logout
main:
anonymous: lazy
我的应用验证器:
// AdminLoginFormAuthenticator.php
namespace App\Security;
use App\Entity\Admin;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
use Symfony\Component\Security\Core\Exception\CustomUserMessageAuthenticationException;
use Symfony\Component\Security\Core\Exception\InvalidCsrfTokenException;
use Symfony\Component\Security\Core\Security;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;
use Symfony\Component\Security\Csrf\CsrfToken;
use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
use Symfony\Component\Security\Guard\Authenticator\AbstractFormLoginAuthenticator;
use Symfony\Component\Security\Guard\PasswordAuthenticatedInterface;
use Symfony\Component\Security\Http\Util\TargetPathTrait;
class AdminLoginFormAuthenticator extends AbstractFormLoginAuthenticator implements PasswordAuthenticatedInterface
use TargetPathTrait;
private $entityManager;
private $urlGenerator;
private $csrfTokenManager;
private $passwordEncoder;
public function __construct(EntityManagerInterface $entityManager, UrlGeneratorInterface $urlGenerator, CsrfTokenManagerInterface $csrfTokenManager, UserPasswordEncoderInterface $passwordEncoder)
$this->entityManager = $entityManager;
$this->urlGenerator = $urlGenerator;
$this->csrfTokenManager = $csrfTokenManager;
$this->passwordEncoder = $passwordEncoder;
public function supports(Request $request)
return 'app_admin' === $request->attributes->get('_route')
&& $request->isMethod('POST');
public function getCredentials(Request $request)
$credentials = [
'username' => $request->request->get('username'),
'password' => $request->request->get('password'),
'csrf_token' => $request->request->get('_csrf_token'),
];
$request->getSession()->set(
Security::LAST_USERNAME,
$credentials['username']
);
return $credentials;
public function getUser($credentials, UserProviderInterface $userProvider)
$token = new CsrfToken('authenticate', $credentials['csrf_token']);
if (!$this->csrfTokenManager->isTokenValid($token))
throw new InvalidCsrfTokenException();
$user = $this->entityManager->getRepository(Admin::class)->findOneBy(['username' => $credentials['username']]);
if (!$user)
// fail authentication with a custom error
throw new CustomUserMessageAuthenticationException('...!');
return $user;
public function checkCredentials($credentials, UserInterface $user)
return $this->passwordEncoder->isPasswordValid($user, $credentials['password']);
/**
* Used to upgrade (rehash) the user's password automatically over time.
*/
public function getPassword($credentials): ?string
return $credentials['password'];
public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
if ($targetPath = $this->getTargetPath($request->getSession(), $providerKey))
return new RedirectResponse($targetPath);
return new RedirectResponse($this->urlGenerator->generate('homepage'));
protected function getLoginUrl()
return $this->urlGenerator->generate('app_admin');
【问题讨论】:
【参考方案1】:您的AdminLoginFormAuthenticator
扩展于AbstractFormLoginAuthenticator
,其中包括以下内容:
/**
* Override to control what happens when the user hits a secure page
* but isn't logged in yet.
*
* @return RedirectResponse
*/
public function start(Request $request, AuthenticationException $authException = null)
$url = $this->getLoginUrl();
return new RedirectResponse($url);
读到这里,你需要做的事情就很明显了。
只需创建您自己的 start()
方法来控制如果他们无权访问会发生什么(例如,他们重定向到哪里)。
namespace App\Security;
class AdminLoginFormAuthenticator extends AbstractFormLoginAuthenticator implements PasswordAuthenticatedInterface
// the rest of your class
public function start(Request $request, AuthenticationException $authException = null)
$url = 'https:://example.com/whateverurlyouwanttoredirectto';
return new RedirectResponse($url);
【讨论】:
谢谢。但我找不到 start() 方法。我编辑我的问题。 没有start()
方法。您必须自己创建它。它存在于您要扩展的类中。
错误:语法错误,文件意外结束,期望函数 (T_FUNCTION) 或 const (T_CONST)
呃...您的文件中有语法错误。您的 PHP 编辑器可能会告诉您它在哪里。以上是关于如果匿名用户无权访问 URL,如何将他们重定向到自定义页面而不是登录页面?的主要内容,如果未能解决你的问题,请参考以下文章