tongnian-admin-api/app/Http/Middleware/EnableCrossRequestMiddleware.php

<?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, X-CSRF-TOKEN, Accept, Authorization, X-XSRF-TOKEN');
        $response->header('Access-Control-Expose-Headers', 'Authorization, authenticated');
        $response->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, OPTIONS');
        $response->header('Access-Control-Allow-Credentials', 'true');
       
        return $response;
        // 
        // $response = $next($request);

        // if ($response instanceof  Response) {
        //     return $next($request)->header('Access-Control-Allow-Origin', '*')
        //         ->header('Access-Control-Allow-Methods', 'GET,POST,PUT,OPTIONS,PATCH,DELETE,HEAD')
        //         ->header('Access-Control-Allow-Headers', 'x-csrf-token,x-requested-with,content-type');
        //         ->header('Access-Control-Expose-Headers', 'Authorization, authenticated');
        //         ->header('Access-Control-Allow-Credentials', 'true');
        // }

        // //  如果是实列 \Symfony\Component\HttpFoundation\Response::class
        // $response->headers->set('Access-Control-Allow-Origin', '*');
        // $response->headers->set('Access-Control-Allow-Methods', 'GET,POST,PUT,OPTIONS,PATCH,DELETE,HEAD');
        // $response->headers->set('Access-Control-Allow-Headers', 'x-csrf-token,x-requested-with,content-type');
        // $response->headers->set('Access-Control-Expose-Headers', 'Authorization, authenticated');
        // $response->headers->set('Access-Control-Allow-Credentials', 'true');
        // return $response;
    }
}