laravel跨域中间件router-api

<?php
/**
 * Created by PhpStorm.
 * User: snower
 * Date: 17/3/22
 * Time: 下午5:22
 */

namespace Common\Middlewares;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
use Illuminate\Http\Response;
use Common\ApiException;
use Thrift\Exception\TException;

class Serialization {
    public function handle($request, \Closure $next)
    {
        $request_referer_info = parse_url($request->header('Referer'));
$request_referer = count($request_referer_info)>1 ?
            $request_referer_info['scheme'].'://'.$request_referer_info['host']
.(isset($request_referer_info['port']) ? ':'.$request_referer_info['port'] : ''): '*';
if($request->isMethod('OPTIONS')){
            if(env('APP_ENV') == 'local'){
                return (new Response('', 204))
                    ->header('Access-Control-Allow-Origin', $request_referer)
                    ->header('Access-Control-Allow-Headers', 'Origin, Content-Type, Cookie, Accept, multipart/form-data, application/json')
                    ->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, OPTIONS')
                    ->header('Access-Control-Allow-Credentials', 'true');
}
        }
        try {
            $response = $next($request);
$data = [
"status" => 0,
"msg" => '',
"data" => $response->getOriginalContent()
            ];
if(env('APP_ENV') == 'local') {
                $response->header('Access-Control-Allow-Origin', $request_referer)
                    ->header('Access-Control-Allow-Credentials', 'true');
}
            return $response->setContent($data);
} catch(AccessDeniedHttpException $e){
            $data = [
"status" => 300,
"msg" => '无权限访问',
"data" => new \stdClass()
            ];
}catch (ApiException $e){
            $data = [
"status" => $e->getCode(),
"msg" => $e->getMessage(),
"data" => new \stdClass()
            ];
}catch(TException  $e){ //RPC调用返回异常
$data = [
"status" => 500,
"msg" => $e->getCode() . ":" . 'RPC调用返回异常',
"data" => new \stdClass()
            ];
}catch(\Exception $e){
            $data = [
"status" => 500,
"msg" => $e->getCode() . ":" . $e->getMessage(),
"data" => new \stdClass()
            ];
}

        $response = new Response($data, 200);
if(env('APP_ENV') == 'local') {
            $response->header('Access-Control-Allow-Origin', $request_referer)
                ->header('Access-Control-Allow-Credentials', 'true');
}
        return $response;
}
}