Symfony 4 - 自动加载器期望 class […] 在文件中定义

Question

我正在尝试将我在 Symfony 3.* 上构建的旧 Bundle 添加到 Symfony 4 但我明白了错误：

The autoloader expected class "App\SBC\TiersBundle\Controller\ChantierController" to be defined in file "/Applications/MAMP/htdocs/Projects/HelloSymfony4/vendor/composer/../../src/SBC/TiersBundle/Controller/ChantierController.php". The file was found but the class was not in it, the class name or namespace probably has a typo in /Applications/MAMP/htdocs/Projects/HelloSymfony4/config/services.yaml (which is loaded in resource "/Applications/MAMP/htdocs/Projects/HelloSymfony4/config/services.yaml").

框架似乎无法识别包的命名空间，所以我执行了以下步骤：
在config/bundle.php中我添加了第三行：

return [
    Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
    Symfony\Bundle\TwigBundle\TwigBundle::class => ['all' => true],
    \SBC\TiersBundle\TiersBundle::class => ['all' => true], // this one
    Symfony\Bundle\WebProfilerBundle\WebProfilerBundle::class => ['dev' => true, 'test' => true],
];

并且在 composer.json 中我在 autoload 部分添加了第一行：

"autoload": {
        "psr-4": {
            "SBC\": "src/SBC/",
            "App\": "src/"

        }
    },

因为我的 Bundle 的命名空间以 SBC\ 开头，并且我在控制台中启动了 composer dump-autoload。

<?php

namespace SBC\TiersBundle;

use Symfony\Component\HttpKernel\Bundle\Bundle;

class TiersBundle extends Bundle
{
}

ChantierController.php:

namespace SBC\TiersBundle\Controller;

use SBC\TiersBundle\Entity\Chantier;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;


class ChantierController extends Controller
{
...
}

这是我在 /src 下的 Bundle:

不幸的是，仍然面临同样的错误，我该如何解决，在此先感谢。

更新：config/services.yaml：

# Put parameters here that don't need to change on each machine where the app is deployed
# https://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
parameters:

services:
    # default configuration for services in *this* file
    _defaults:
        autowire: true      # Automatically injects dependencies in your services.
        autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.
        public: false       # Allows optimizing the container by removing unused services; this also means
                            # fetching services directly from the container via $container->get() won't work.
                            # The best practice is to be explicit about your dependencies anyway.

    # makes classes in src/ available to be used as services
    # this creates a service per class whose id is the fully-qualified class name
    SBC\:
        resource: '../src/SBC/*'
        exclude: '../src/SBC/TiersBundle/{Entity,Migrations,Tests}'

    SBC\TiersBundle\Controller\:
        resource: '../src/SBC/TiersBundle/Controller'
        tags: ['controller.service_arguments']

    App\:
        resource: '../src/*'
        exclude: '../src/{Entity,Migrations,Tests}'

    # controllers are imported separately to make sure services can be injected
    # as action arguments even if you don't extend any base controller class
    App\Controller\:
        resource: '../src/Controller'
        tags: ['controller.service_arguments']

    # add more service definitions when explicit configuration is needed
    # please note that last definitions always *replace* previous ones

Answer 1

问题很可能是由 Symfony 配置和命名空间冲突引起的。首先你需要调整你的 config/services.yaml:

SBC\:
    resource: '../src/SBC/*'
    exclude: '../src/SBC/TiersBundle/{Entity,Migrations,Tests,Kernel.php}'

SBC\TiersBundle\Controller\:
    resource: '../src/SBC/TiersBundle/Controller'
    tags: ['controller.service_arguments']

App\:
    resource: '../src/*'
    exclude: '../src/{SBC,Entity,Migrations,Tests,Kernel.php}'

这样您就可以为命名空间定义默认值，并防止默认命名空间 App 在生成自动加载类时包含您的目录。注意，如果使用注解路由，还需要调整config/routes/annotations.yaml:

sbc_controllers:
    resource: ../../src/SBC/TiersBundle/Controller/
    type: annotation

所以路线生成正确。再次执行这些步骤后运行 composer dump-autoload 并清除 Symfony 的缓存。

如果您将来运行遇到另一个问题，这可能会对您有所帮助：https://github.com/symfony/symfony/blob/master/UPGRADE-4.0.md

Symfony 4 - 自动加载器期望 class […] 在文件中定义

Symfony 4 - The autoloader expected class […] to be defined in file

php

autoload

symfony4