Question

我在使用Symfony4和API平台的自定义控制器时遇到麻烦。

{“ @context”：“ / api / contexts / Error”，“ @type”：“ hydra：Error”，
“ hydra：title”：“发生错误”，“ hydra：description”：“控制器 \“ \ App \ Controller \ CategoryController \”具有必需的构造函数参数，并且在容器中不存在。你忘了定义这样的服务？“，”跟踪“：[ { “ namespace”：“”， “ short_class”：“”， “ class”：“”， “ type”：“”， “ function”：“”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ Controller \ ContainerControllerResolver.php”， “行”：62， “参数”：[] }， { “ namespace”：“ Symfony \ Component \ HttpKernel \ Controller”， “ short_class”：“ ContainerControllerResolver”， “ class”：“ Symfony \ Component \ HttpKernel \ Controller \ ContainerControllerResolver”， “ type”：“->”， “ function”：“ instantiateController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ framework-bundle \ Controller \ ControllerResolver.php”， “线”：54 “参数”：[ [ “串”， “ \ App \ Controller \ CategoryController” ] ] }， { “ namespace”：“ Symfony \ Bundle \ FrameworkBundle \ Controller”， “ short_class”：“ ControllerResolver”， “ class”：“ Symfony \ Bundle \ FrameworkBundle \ Controller \ ControllerResolver”， “ type”：“->”， “ function”：“ instantiateController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ Controller \ ControllerResolver.php”， “行”：110， “参数”：[ [ “串”， “ \ App \ Controller \ CategoryController” ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel \ Controller”， “ short_class”：“ ControllerResolver”， “ class”：“ Symfony \ Component \ HttpKernel \ Controller \ ControllerResolver”， “ type”：“->”， “ function”：“ createController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ Controller \ ContainerControllerResolver.php”， “行”：42 “参数”：[ [ “串”， “ \ App \ Controller \ CategoryController :: show” ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel \ Controller”， “ short_class”：“ ContainerControllerResolver”， “ class”：“ Symfony \ Component \ HttpKernel \ Controller \ ContainerControllerResolver”， “ type”：“->”， “ function”：“ createController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ framework-bundle \ Controller \ ControllerResolver.php”， “线”：46， “参数”：[ [ “串”， “ \ App \ Controller \ CategoryController :: show” ] ] }， { “ namespace”：“ Symfony \ Bundle \ FrameworkBundle \ Controller”， “ short_class”：“ ControllerResolver”， “ class”：“ Symfony \ Bundle \ FrameworkBundle \ Controller \ ControllerResolver”， “ type”：“->”， “ function”：“ createController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ Controller \ ControllerResolver.php”， “行”：85， “参数”：[ [ “串”， “ \ App \ Controller \ CategoryController :: show” ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel \ Controller”， “ short_class”：“ ControllerResolver”， “ class”：“ Symfony \ Component \ HttpKernel \ Controller \ ControllerResolver”， “ type”：“->”， “ function”：“ getController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ Controller \ TraceableControllerResolver.php”， “线”：38， “参数”：[ [ “宾语”， “ Symfony \ Component \ HttpFoundation \ Request” ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel \ Controller”， “ short_class”：“ TraceableControllerResolver”， “ class”：“ Symfony \ Component \ HttpKernel \ Controller \ TraceableControllerResolver”， “ type”：“->”， “ function”：“ getController”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ HttpKernel.php”， “行”：134， “参数”：[ [ “宾语”， “ Symfony \ Component \ HttpFoundation \ Request” ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel”， “ short_class”：“ HttpKernel”， “ class”：“ Symfony \ Component \ HttpKernel \ HttpKernel”， “ type”：“->”， “ function”：“ handleRaw”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ HttpKernel.php”， “行”：68， “参数”：[ [ “宾语”， “ Symfony \ Component \ HttpFoundation \ Request” ]， [ “整数”， 1个 ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel”， “ short_class”：“ HttpKernel”， “ class”：“ Symfony \ Component \ HttpKernel \ HttpKernel”， “ type”：“->”， “ function”：“ handle”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ vendor \ symfony \ http-kernel \ Kernel.php”， “行”：198， “参数”：[ [ “宾语”， “ Symfony \ Component \ HttpFoundation \ Request” ]， [ “整数”， 1个 ]， [ “布尔值”，真正 ] ] }， { “ namespace”：“ Symfony \ Component \ HttpKernel”， “ short_class”：“内核”， “ class”：“ Symfony \ Component \ HttpKernel \ Kernel”， “ type”：“->”， “ function”：“ handle”， “ file”：“ C：\ Users \ Jonny \ Desktop \ Workspace \ php \ documentarywire \ public \ index.php”， “行”：25， “参数”：[ [ “宾语”， “ Symfony \ Component \ HttpFoundation \ Request” ] ] }]}

。

<?php

namespace App\Controller;

use App\Entity\User;
use App\Service\CategoryService;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;

class CategoryController extends AbstractController
{
    /**
     * @var CategoryService
     */
    private $categoryService;

    /**
     * @param CategoryService $categoryService
     */
    public function __construct(CategoryService $categoryService)
    {
        $this->categoryService = $categoryService;
    }

    public function show($slug)
    {
        return $slug;
    }
}

我尝试将控制器和服务添加到services.yaml

# This file is the entry point to configure your own services.
# Files in the packages/ subdirectory configure your dependencies.

# 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.

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

    # 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

    category_service:
        class: App\Service\CategoryService
        public: true

    App\Controller\CategoryController:
        arguments: ['@category_service']

“ Controller ..CategoryController具有必需的构造函数参数，并且在容器中不存在。您是否忘了定义这样的服务？”，

0 个答案: