在laravel 5.3中设置cors

Question

所以我有以下中间件：

<?php

namespace App\Http\Middleware;

use Closure;

class Cors {

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next) {

        return $next($request)
            ->header('Access-Control-Allow-Origin', '*')
            ->header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
    }

}

<?php

namespace App\Http;

use Illuminate\Foundation\Http\Kernel as HttpKernel;

class Kernel extends HttpKernel
{
    /**
     * The application's global HTTP middleware stack.
     *
     * @var array
     */
    protected $middleware = [
        // ...
        \App\Http\Middleware\Cors::class,
    ];

    /**
     * The application's route middleware.
     *
     * @var array
     */
    protected $routeMiddleware = [
        'cors' => \App\Http\Middleware\Cors::class,
        // ...
    ];
}

Route::group([
    'prefix'     => 'api/v1/',
    'middleware' => 'cors'
], function() {
    // ...
});

但是javascript假设cors没有启用？

Answer 1

查看错误的最后一行，我猜您的服务器端缺少content-type标头。尝试将这一行添加到标题中，看看是否有效：

header->('Access-Control-Allow-Headers'=> 'Content-Type, X-Auth-Token, Origin');

你也可以看看这个答案。