Symfony 4：您请求的服务不存在

Question

我将我的网站从Symfony 3.4更新到Symfony 4，并做了一些更改。但是知道我有这个错误：

您请求的服务“ D”不存在。

这是我的堆栈跟踪：

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException:
You have requested a non-existent service "D".

  at vendor\symfony\dependency-injection\Container.php:263
  at Symfony\Component\DependencyInjection\Container->get('D')
     (vendor\symfony\routing\Loader\DependencyInjection\ServiceRouterLoader.php:38)
  at Symfony\Component\Routing\Loader\DependencyInjection\ServiceRouterLoader->getServiceObject('D')
     (vendor\symfony\routing\Loader\ObjectRouteLoader.php:55)
  at Symfony\Component\Routing\Loader\ObjectRouteLoader->load('D:\\IIS Websites\\Wizard\\src/config/routing.yml', 'service')
     (vendor\symfony\config\Loader\DelegatingLoader.php:40)
  at Symfony\Component\Config\Loader\DelegatingLoader->load('D:\\IIS Websites\\Wizard\\src/config/routing.yml', 'service')
     (vendor\symfony\framework-bundle\Routing\DelegatingLoader.php:70)
  at Symfony\Bundle\FrameworkBundle\Routing\DelegatingLoader->load('D:\\IIS Websites\\Wizard\\src/config/routing.yml', 'service')
     (vendor\symfony\framework-bundle\Routing\Router.php:56)
  at Symfony\Bundle\FrameworkBundle\Routing\Router->getRouteCollection()
     (vendor\symfony\routing\Router.php:367)
  at Symfony\Component\Routing\Router->getMatcherDumperInstance()
     (vendor\symfony\routing\Router.php:289)
  at Symfony\Component\Routing\Router->Symfony\Component\Routing\{closure}(object(ResourceCheckerConfigCache))
  at call_user_func(object(Closure), object(ResourceCheckerConfigCache))
     (vendor\symfony\config\ResourceCheckerConfigCacheFactory.php:43)
  at Symfony\Component\Config\ResourceCheckerConfigCacheFactory->cache('D:\\IIS Websites\\Wizard\\var\\cache\\dev/srcDevDebugProjectContainerUrlMatcher.php', object(Closure))
     (vendor\symfony\routing\Router.php:302)
  at Symfony\Component\Routing\Router->getMatcher()
     (vendor\symfony\routing\Router.php:256)
  at Symfony\Component\Routing\Router->matchRequest(object(Request))
     (vendor\symfony\http-kernel\EventListener\RouterListener.php:109)
  at Symfony\Component\HttpKernel\EventListener\RouterListener->onKernelRequest(object(GetResponseEvent), 'kernel.request', object(EventDispatcher))
     (vendor\symfony\event-dispatcher\EventDispatcher.php:212)
  at Symfony\Component\EventDispatcher\EventDispatcher->doDispatch(array(array(object(DebugHandlersListener), 'configure'), array(object(ValidateRequestListener), 'onKernelRequest'), array(object(SessionListener), 'onKernelRequest'), array(object(FragmentListener), 'onKernelRequest'), array(object(RouterListener), 'onKernelRequest'), array(object(ResolveControllerNameSubscriber), 'onKernelRequest'), array(object(LocaleListener), 'onKernelRequest'), array(object(TranslatorListener), 'onKernelRequest'), array(object(TraceableFirewallListener), 'onKernelRequest')), 'kernel.request', object(GetResponseEvent))
     (vendor\symfony\event-dispatcher\EventDispatcher.php:44)
  at Symfony\Component\EventDispatcher\EventDispatcher->dispatch('kernel.request', object(GetResponseEvent))
     (vendor\symfony\http-kernel\HttpKernel.php:125)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1)
     (vendor\symfony\http-kernel\HttpKernel.php:66)
  at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, true)
     (vendor\symfony\http-kernel\Kernel.php:190)
  at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
     (public\index.php:34)

感谢您的帮助。

Answer 1

从Symfony 3.4升级到4.0时，我遇到了同样的问题。我目前正在为路线使用注释，而使用Symfony 3则不是这种情况。

看来我的framework.yaml路由器配置（/ config / packages /）错误。

framework: router: resource: "%kernel.root_dir%/config/routing.yml" strict_requirements: ~

实际上，这是从旧config.yml文件复制/粘贴的。当我对路由使用注释时，在框架配置中删除路由器密钥解决了我的问题。但是您可能还需要指向“资源”下的特定路由配置文件。

您可以使用以下命令来检查指定的资源路径是否正确：

php bin/console debug:config framework

希望这会有所帮助！