Call to undefined method Symfony\Component\HttpFoundation\BinaryFileResponse::header()

最近在用 lumen 做前后分离接口 添加跨域 导致 无法下载excl 只需要修改跨域中间件就好了

public function handle($request, Closure $next)
{


    if($request->isMethod(‘OPTIONS‘)) {
         $response = response(‘‘, 200);
    } else {
        $response = $next($request);
    }


    $IlluminateResponse = ‘Illuminate\Http\Response‘;
    $SymfonyResopnse = ‘Symfony\Component\HttpFoundation\Response‘;
    $headers = [
        ‘Access-Control-Allow-Origin‘ => ‘*‘,
        ‘Access-Control-Allow-Methods‘ => ‘POST, GET, OPTIONS, PUT, PATCH, DELETE‘,
        ‘Access-Control-Allow-Headers‘ => ‘Access-Control-Allow-Headers, Origin,Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Authorization , Access-Control-Request-Headers, X-CSRF-TOKEN‘
    ];

    if ($response instanceof $IlluminateResponse) {
        $response->header(‘Access-Control-Allow-Methods‘, ‘HEAD, GET, POST, PUT, PATCH, DELETE‘);
        $response->header(‘Access-Control-Allow-Headers‘, $request->header(‘Access-Control-Request-Headers‘));
        $response->header(‘Access-Control-Allow-Origin‘, ‘*‘);
        return $response;
    }

    if ($response instanceof $SymfonyResopnse) {

        foreach ($headers as $key => $value) {
            $response->headers->set($key, $value);
        }
        return $response;
    }

    return $response;


}




判断下载excl 修改header头即可

Call to undefined method Symfony\Component\HttpFoundation\BinaryFileResponse::header()

原文：https://www.cnblogs.com/niu6/p/12203015.html