thinkphp5 怎么获取当前的模块，控制器和方法名

//当前模块url地址
$request= Request::instance();
$module_name=$request->module();
$controller_name=$request->controller();
$action=$request->action();
$active_url=$module_name.'/'.$controller_name.'/'.$action;
echo $active_url;exit;

打印结果:index/GetOss/get_signature