def get_wxcode(request):
  """
  公眾號掃碼登陸
  獲取帶參數二維碼

  參數：

    返回值：
       {
   "formError": {},
   "delta_time": 951,
   "errorCode": 0,
   "params": {
   "scene_id": "512"
   },
   "message": "",
   "data": {
   "url": "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQEi8TwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAyUFNnZ2RNRlU5Y1QxWkJqZDF1Y1QAAgTlmMReAwSAOgkA",
   "sceneid": "2500", # 唯一掃碼場景值，用來判斷哪個用戶進行掃碼登陸
   "type": "get"
   }
  }
  """
  try:
    scene_id = str(int((time.time())))
    access_token = get_access_token()
    if access_token:
      user_info_url = u'https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=' + access_token
      params = {
        'expire_seconds': 604800,
        'action_name': 'QR_STR_SCENE',
        'action_info': {"scene": {"scene_str": scene_id}},
      }
      params = json.dumps(params)
      userinfo = requests.post(user_info_url, data=params).json()
      ticket = userinfo['ticket']
      # except:
      #   raise FieldError("ticket", "ticket獲取異常")
      data = {
        "type": 'get',
        'url': 'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=' + ticket,
        'sceneid':scene_id
      }
      return data
    else:
      raise FieldError("微信", "微信公共號正在維護中，給你帶來的不便，敬請原諒")
  except:
    raise FieldError("微信", "微信公共號正在維護中，給你帶來的不便，敬請原諒")

def get_public_wx_status(request):
  '''
  參數
   scene_id 場景值   必傳   判斷是哪個用戶 掃碼
  輪詢查看 公眾號 是否掃碼關注，掃碼關注是否綁定手機號

  :param request:
  :return:
    {
   "formError": {},
   "delta_time": 713,
   "errorCode": 0,
   "params": {},
   "message": "",
   "data": {
   "focus_state": 1,  # 微信關注的狀態(tài) 1 已掃碼關注  0 未關注
   "state": 0  # 關注后，是否綁定手機號 0 未綁定 1 已綁定，直接登錄
   }
  }
  '''


  post_info = request.POST
  scene_id = post_info.get("scene_id", '')
  if not scene_id:
    raise FieldError('scene_id','scene_id不能為空')
  openid = redis_conn.get(scene_id)
  if openid == None:
    return {'focus_state': 0}
  else:
    uid = redis_conn.get(str(openid))
    if uid == None:
      return {'focus_state':0}
    else:
      user = UserWxInfo.objects.get(openid=openid)
      if user.focus_state == 1:
        state = 1
        _ = User.objects.get(uid=user.uid)
        request.apisession["uid"] = user.uid
        request.apisession["pwd_updatetime"] = _.pwd_updatetime
        ip = ''
        if request.META.has_key('HTTP_X_FORWARD_FOR'):
          ip = request.META['HTTP_X_FORWARD_FOR']
        else:
          ip = request.META['REMOTE_ADDR']
        UserLoginLog(uid=user.uid, ip=ip).save()

      else:
        state = 0
      return {
        'focus_state':1,
        'state':state
      }