Symfony4 - 函数 App\Manager\ImageManager::__construct() 的参数太少，传递了 0 个，预期正好有 1 个

Question

我试图在我的 ImageManager.php 的 services.yaml 中获取一个参数，但它不起作用，我无法解决此错误。

这里是错误:

Type error: Too few arguments to function App\Manager\ImageManager::__construct(), 0 passed in C:\wamp64\www\SymfonyAPI\var\cache\dev\ContainerZxFSS5S\getImageManagerService.php on line 14 and exactly 1 expected

服务.yaml

parameters:
    images_directory: '%kernel.project_dir%/public/uploads/images/'
...

services:
    _defaults:
        autowire: false
        autoconfigure: false
        public: true

App\Manager\ImageManager:
    arguments:
        $targetDir: '%images_directory%'

如果对于 Autowiring 和自动配置我设置为 true 我有此错误:

RuntimeException Cannot autowire service "App\Manager\ImageManager": argument "$targetDir" of method "__construct()" has type "App\Manager\targetDir" but this class was not found.

ImageManager.php

private $targetDir;

public function __construct(targetDir $targetDir) 
{
    $this->targetDir = $targetDir;
}

<小时/>

完整服务.yml

parameters:
    liip_imagine.mozjpeg.binary: /mozjpeg/cjpeg.exe
    images_directory: '%kernel.project_dir%/public/uploads/images/'
    mozjpg_directory: '%kernel.project_dir%/mozjpg'
    locale: 'en'

services:
    _defaults:
        autowire: false
        autoconfigure: false
        public: true

App\Manager\ImageManager:
    arguments:
        $targetDir: '%images_directory%'

App\EventListener\ImageUploadListener:
    tags:
        - { name: doctrine.event_listener, event: prePersist }
        - { name: doctrine.event_listener, event: preUpdate } 

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

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

app.post_processor.my_custom_post_processor:
    class: '%kernel.project_dir%/src/Controller/ImageController.php'
    tags:
        - { name: 'liip_imagine.filter.post_processor', post_processor: 'mozjpeg' }

Answer 1

您正在添加一种 targetDir 类型，并且您的应用程序认为这是某种类，您可以在错误中看到 的类型为“App\Manager\targetDir”，但该类未找到。，如果您使用的是 php 7 或者不将任何内容作为类型，只需将 targetDir 替换为 string 即可，即使您具有 Autowiring true/false 的原因是:

App\Manager\ImageManager:
    arguments:
        $targetDir: '%images_directory%'