Question

我正在为这个问题而苦苦挣扎，我有一个用Laravel开发的API，其中一个端点需要能够对其他发出请求的服务器进行访问，我在这里浏览了多个论坛，但是我找不到解决方案。

这个错误使我排在前面：

Access to fetch at 'http://localhost:8000/api/v1/auth/signup' from origin 'http://localhost:3000' has been blocked by CORS policy: Request header field Content-Type is not allowed by Access-Control-Allow-Headers in preflight response.

我试图实现一个cors中间件，这是代码：

<?php namespace App\Http\Middleware;

use Closure;

class CORS {

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {

        header("Access-Control-Allow-Origin: *");

        // ALLOW OPTIONS METHOD
        $headers = [
            'Access-Control-Allow-Methods'=> 'POST, GET, OPTIONS, PUT, DELETE',
            'Access-Control-Allow-Headers'=> 'Content-Type, X-Auth-Token, Origin'
        ];
        if($request->getMethod() == "OPTIONS") {
            // The client-side application can set only headers allowed in Access-Control-Allow-Headers
            return Response::make('OK', 200, $headers);
        }

        $response = $next($request);
        foreach($headers as $key => $value)
            $response->header($key, $value);
        return $response;
    }
}

在kernel.php中：

 protected $routeMiddleware = [
        'cors' => \App\Http\Middleware\Cors::class,

在routes.php中：

Route::post('api/v1/auth/signup', 'Api\AuthApiController@signUpUser')->middleware(['cors']);

为什么cors中间件什么也不做？从服务器端来看，没有错误。

无法在Laravel 5.1.46中启用中间件CORS

0 个答案: