回應（Response）

namespace App\Http\Middleware;

use Closure;

class ForceJsonMiddleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  \Closure $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $request->headers->set('accept', 'application/json');

        return $next($request);
    }
}

'force-json-response' => \App\Http\Middleware\ForceJsonMiddleware::class,

Route::group(['middleware' => ['force-json-response', 'auth:api']], function () {

});