laravel开发中跨域的解决方案

php artisan make:middleware EnableCrossRequestMiddleware

<?php
namespace App\Http\Middleware;
use Closure;
class EnableCrossRequestMiddleware
{
 /**
 * Handle an incoming request.
 *
 * @param \Illuminate\Http\Request $request
 * @param \Closure $next
 * @return mixed
 */
 public function handle($request, Closure $next)
 {
 $response = $next($request);
 $origin = $request->server('HTTP_ORIGIN') ? $request->server('HTTP_ORIGIN') : '';
 $allow_origin = [
  'http://localhost:8000',
 ];
 if (in_array($origin, $allow_origin)) {
  $response->header('Access-Control-Allow-Origin', $origin);
  $response->header('Access-Control-Allow-Headers', 'Origin, Content-Type, Cookie, X-CSRF-TOKEN, Accept, Authorization, X-XSRF-TOKEN');
  $response->header('Access-Control-Expose-Headers', 'Authorization, authenticated');
  $response->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, OPTIONS');
  $response->header('Access-Control-Allow-Credentials', 'true');
 }
 return $response;
 }
}

 protected $middleware = [
 // more
 App\Http\Middleware\EnableCrossRequestMiddleware::class,
 ];