neiyou_user_web/app/Http/Middleware/Authenticate.php

<?php

namespace App\Http\Middleware;

use Illuminate\Auth\Middleware\Authenticate as Middleware;

class Authenticate extends Middleware
{

    /**
     * Get the path the user should be redirected to when they are not
     * authenticated.
     *
     * @param  \Illuminate\Http\Request  $request
     *
     * @return string|null
     */
    protected function redirectTo($request)
    {
        if ( ! $request->expectsJson()) {
            return route('login');
        }
    }

}