中间件使用    1、项目目录下cmd中php artisan make:middleware adminLogin,创建中间件        2、注册中间件(\Http\kernel.php)        protected $routeMiddleware = [            'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,            'adminLogin' => \App\Http\Middleware\AdminLogin::class,        ];    3、在group组中加入中间件过滤路由     Route::group(['namespace'=>'admin','prefix'=>'admin','middleware'=>'adminLogin'],function(){　　　　}    4、打开中间件即可编辑方法(\app\Http\Middleware\adminLogin.php)