thinkphp5.1beta 版本构造函数问题

报错：thinkphp5.1  <div><h1>类型错误: Too few arguments to function think\Controller: :__construct()......2 expect

=========================================================================================

解决办法：在调用父类构造函数中传入两个参数即可

<?php
namespace app\api\controller;
use think\Request;
use think\App;
use think\Controller;
class Common extends Controller
{
   public function __construct(Request $request, App $app){  //构造参数
       parent::__construct($request,$app);//构造参数
   }
   public function _initialize(){
      //判断session_id是否存在
      if(session("uid")==""){
            $this->redirect(url("login/index"));
       }
     
   }