小编Amr*_*gab的帖子

我正在尝试使用Vuejs构建一个独立的前端 Web 应用程序，并从我构建的Laravel 9 API中获取数据，当我尝试从前端访问数据（即浏览器控制台中的响应）时：

从源“http://127.0.0.1:8080”访问“http://localhost:8000/api”的 XMLHttpRequest 已被 CORS 策略阻止：“Access-Control-Allow-Origin”标头不存在请求的资源。

后端代码 (Laravel 9)

1-api.php 文件

<?php

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Route;
use App\Models\User;
/*
|--------------------------------------------------------------------------
| API Routes
|--------------------------------------------------------------------------
|
| Here is where you can register API routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| is assigned the "api" middleware group. Enjoy building your API!
|
*/

Route::get('/', function () {
    $users = User::all();
    return response()->json($users, 200);
});

2- …