关于 php:symfony 更新到 3.4 后的应用程序级别错误

application level error after symfony update to 3.4

今天我从 sf2.8 升级到 sf3.4...首先我遇到了一些错误，因为我没有重新编写 sf 标准文件，现在这些错误消失了，我遇到了应用程序级别的错误。在 sf2.8 下这不是问题，我不明白为什么现在是这样。

错误触发命中 "/":

[Tue Oct 02 11:37:31.885382 2018] [proxy_fcgi:error] [pid 24:tid 140202295097088] [client 172.29.0.1:37964] AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Symfony\\\\Component\\\\Debug\\\\Exception\\\\FatalThrowableError: Type error: Argument 2 passed to TheApp\\\\FrontendBundle\\\\Services\\\\UrlAliasService::__construct() must be an instance of TheApp\\\\FrontendBundle\\\
outing\\\
outer, instance of Symfony\\\\Bundle\\\\FrameworkBundle\\\
outing\\\
outer given, called in /var/www/var/cache/dev/ContainerV5bxhc0/appDevDebugProjectContainer.php on line 3678 in /var/www/src/TheApp/FrontendBundle/Services/UrlAliasService.php:25\
Stack trace:\
#0 /var/www/var/cache/dev/ContainerV5bxhc0/appDevDebugProjectContainer.php(3678): TheApp\\\\FrontendBundle\\\\Services\\\\UrlAliasService->__construct(Object(Doctrine\\\\ORM\\\\EntityManager), Object(Symfony\\\\Bundle\\\\FrameworkBundle\\\
outing\\\
outer), Object(Cocur\\\\Slugify\\\\Slugify))\
#1 /var/www/var/cache/dev/ContainerV5bxhc0/appDevDebugProjectContainer.php(3698): ContainerV5bxhc0\\\\appDevDebugProjectContainer->getTheApp_UrlaliasserviceService()\
#2 /var/www/var/cache/dev/ContainerV5bxhc0/appDevDebugProjectContainer.php(3872): Contain...\
'

所以服务 "UrlAliasService" 需要 3 个参数：

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...
use TheApp\\FrontendBundle\
outing\
outer;
...
public function __construct(EntityManager $entityManager, Router $router, Slugify $slugify)
{
$this->em = $entityManager;
$this->urlRepository = $this->em->getRepository('TheAppFrontendBundle:UrlAlias');
$this->router = $router;
$this->slugify = $slugify;
$this->urlAliasInProcess = new ArrayCollection();
}

这 3 个参数被连接到 services.yml:

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theapp.urlaliasservice:
class: TheApp\\FrontendBundle\\Services\\UrlAliasService
arguments: ["@doctrine.orm.entity_manager","@router","@cocur_slugify"]

这里是路由器类，扩展 BaseRouter:

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namespace TheApp\\FrontendBundle\
outing;

use Symfony\\Bundle\\FrameworkBundle\
outing\
outer as BaseRouter;
...
use Symfony\\Component\
outing\
equestContext;

class Router extends BaseRouter implements ContainerAwareInterface
{
private $container;

public function __construct(ContainerInterface $container, $resource, array $options = array(), RequestContext $context = null)
{
parent::__construct($container, $resource, $options, $context);
$this->setContainer($container);
}

public function getGenerator()
{
$generator = parent::getGenerator();
$generator->setContainer($this->container);
return $generator;
}

public function setContainer(ContainerInterface $container = null)
{
$this->container = $container;
}
}

所以错误告诉我传入的参数来自类型 TheApp\\\\\\\\FrontendBundle\\\\
郊游\\\\
外部 .... 但它实际上来自 Symfony\\\\\\\\Bundle\\\\\\\\FrameworkBundle\\\\ 类型
郊游\\\\
外部....阅读代码这个错误没有意义吧？类 TheApp\\\\\\\\FrontendBundle\\\\
郊游\\\\
外部扩展 Symfony\\\\\\\\Bundle\\\\\\\\FrameworkBundle\\\\
郊游\\\\
外部那么它怎么可能不是它的一个实例呢？非常非常感谢帮助和解释。