Symfony 4-自动加载程序需要在文件中定义类[…]

Question

我正在尝试添加一个在Symfony 3上构建的旧包。*到Symfony 4，但我得到了以下错误：

自动加载器预期类“App\SBC\TiersBundle\Controller\ChantierController”将在文件“/Applications/MAMP/htdocs/Projects/HelloSymfony4/vendor/composer/../../src/SBC/TiersBundle/Controller/ChantierController.php”中定义。已找到该文件，但该类不在其中，类名称或命名空间可能在/Applications/MAMP/htdocs/Projects/HelloSymfony4/config/services中有输入错误。yaml（加载在resource/Applications/MAMP/htdocs/Projects/HelloSymfony4/config/services.yaml中）。

框架似乎没有识别捆绑包的名称空间，所以我在config/bundle中执行了以下步骤：
。php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],
];

在composer.json中，我添加了autoload部分的第一行：

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

        }
    },

因为我的Bundle的名称空间以SBC\开头，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
{
}

Chantier控制器。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
{
...
}

不幸的是，仍然面临同样的错误，我如何修复它，并提前表示感谢。

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

这个问题很可能是由Symfony配置和名称空间冲突引起的。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，您将为您的命名空间定义默认值，并在生成自动加载类时防止默认命名空间App包含您的目录。请注意，如果您使用的是注释路由，您还需要调整config/annotations.yaml：

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

这样就可以正确地生成路由。执行这些步骤后，再次运行composer dump autoload，并清除Symfony的缓存。

如果将来遇到其他问题，这可能会有所帮助：https://github.com/symfony/symfony/blob/master/UPGRADE-4.0.md