共三步：

1、新建中間件：

php artisan make:middleware EnableCrossRequestMiddleware

2、EnableCrossRequestMiddleware.php中重寫中間件里面的內容：

<?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);$response->header('Access-Control-Allow-Origin', '*');$response->header('Access-Control-Allow-Headers', 'Origin, Content-Type, Cookie, Accept');$response->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, OPTIONS,DELETE');$response->header('Access-Control-Allow-Credentials', 'false');return $response;} }

3、在Kernel.php中 注冊中間件：

\App\Http\Middleware\EnableCrossRequestMiddleware::class,

總結

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