Laravel 8错误:目标类[App\Http\Controllers\App\Http\Controllers\PostController]不存在

Question

我在laravel 8中是新的，我添加了新的控制器并编辑了App\Http\Controllers\App\Http\Controllers\PostController，但是仍然有这样的错误：“目标类App\Http\Controllers\App\Http\Controllers\PostController不存在”

我是PostController.php

​

<?php

namespace app\Http\Controllers;


class PostController extends Controller
{
    public function index()
    {
        return view('articles');
    }

}

​

web.php

​

<?php

use Illuminate\Support\Facades\Route;
use App\Http\Controllers\PostController;

Route::get('/','App\Http\Controllers\PostController@index' );

​

我还通过添加命名空间尝试了另一种解决方案，但不起作用

​

$namespace = 'App\Http\Controllers'; 

​

它给了我一个错误：“没有找到类‘app\Http\Controller\Controller’”

如果这里有人能向我解释问题在哪里，我会感激的。

Answer 1

只需将此转换为以下代码

​

<?php

use Illuminate\Support\Facades\Route;
use App\Http\Controllers\PostController;

Route::get('/','App\Http\Controllers\PostController@index' );

​

通过这一条：

enter code here

<?php

use Illuminate\Support\Facades\Route;
use App\Http\Controllers\PostController;

Route::get('/',[PostController::class, 'index']);

错误是您编写了一个laravel 7、6等代码，所以laravel 8中的新路线类似于NameOfController::class，'name_of_method‘，您可以查看laravel 8 docs https://laravel.com/docs/8.x/routing

Answer 2

这是因为默认名称空间已从laravel 8中删除。

 /**
     * The path to the "home" route for your application.
     *
     * This is used by Laravel authentication to redirect users after login.
     *
     * @var string
     */
    public const HOME = '/backend/dashboard';

    /**
     * The controller namespace for the application.
     *
     * When present, controller route declarations will automatically be prefixed with this namespace.
     *
     * @var string|null
     */
    protected $namespace = 'App\\Http\\Controllers'; //uncomment this