ql-gw-laravel5/app/Http/Middleware/CheckLogin.php

<?php
namespace App\Http\Middleware;

use Closure;

class CheckLogin
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
		if(!session()->has('admin_user_info'))
		{
			redirect()->route('admin_login');
		}
		else
		{
			
		}
		
        return $next($request);
    }
}