public function process(Request $request, callable $next) : Response
    {
        // 如果是opitons請求則返回一個空的響應(yīng)，否則繼續(xù)向洋蔥芯穿越，并得到一個響應(yīng)
        $response = $request->method() == 'OPTIONS' ? response('') : $next($request);
        $response->withHeaders([
            'Access-Control-Allow-Headers' => 'Content-Type,Authorization,X-Requested-With,Accept,Origin',
        ]);
        header('Access-Control-Allow-Origin: *');
        return $response;
    }