public function index(Request $request)
    {
        $user = session(‘user‘);//用户资料
        if(empty($user))
        {
            $response =  $this->wechat->oauth->scopes([‘snsapi_base‘])->redirect();
            return $response;
        }else{
            dd($user);
        }
    }
    public function login(Request $request)
    {
        $code = $request->input(‘code‘);
　　　　　　//处理40163问题
        if($code)
        {
            $accessToken = $this->wechat->oauth->getAccessToken($code);
            $user = $this->wechat->oauth->user($accessToken);
            dd($user);
        }
        return redirect(‘pay/index‘);
    }