private async Task UpdateUser(string userId, string access_token)
        {
            //查询
            var first = _middleDB.WechatEeappUser.FirstOrDefault(w => w.UserId == userId);

            //理论上不会出现找到的情况
            if (first != null)
            {
                //每天更新一次
                if (DateTime.Now < (first.UpdateTime ?? DateTime.Now).AddDays(1))
                {
                    return;
                }
                //获取通讯录
                var userGet = await WxEEContext.UserApi.GetContactUser(access_token, userId);

                if (userGet.errcode != 0)
                {
                    return;
                }
                //更新
                first.Name = userGet.name;
                //修改岗位
                first.Position   = userGet.position;
                first.Mobile     = userGet.mobile;
                first.Gender     = userGet.gender == 1;
                first.Email      = userGet.email;
                first.Avatar     = userGet.avatar;
                first.QrCode     = userGet.qr_code;
                first.UpdateTime = DateTime.Now;
                if (string.IsNullOrEmpty(first.Openid))
                {
                    //转OpenId
                    var convert = await WxEEContext.UserApi.UserIdToOpenId(access_token, userId);

                    first.Openid = convert.errcode == 0 ? convert.openid : convert.errmsg;
                }
            }
            await _middleDB.SaveChangesAsync();
        }