/// <summary>
        /// 小程序下单
        /// </summary>
        /// <param name="oIds">订单Id</param>
        /// <param name="code">临时登录凭证</param>
        /// <returns></returns>
        public ActionResult WeXcxPay(int[] oIds, string code)
        {
            #region 验证订单是否有效,并合计价格

            //订单价格
            decimal payPrice = 0;

            //订单描述
            string detail = "";

            //验证订单.....


            #endregion

            #region 统一下单

            try
            {
                //支付回调通知地址
                var        address = WebConfigurationManager.AppSettings["WxXcxNotifyUrl"].ToString();
                XcxPayData data    = new XcxPayData();
                data.SetValue("body", "商品购买");

                //可以将用户Id和订单Id同时封装在attach中
                data.SetValue("attach", String.Join(",", oIds).ToString());
                Random rd = new Random();

                //外部商户订单号
                var payNum = DateTime.Now.ToString("yyyyMMddHHmmss") + rd.Next(0, 1000).ToString().PadLeft(3, '0');
                data.SetValue("out_trade_no", payNum);
                data.SetValue("detail", detail.Substring(0, detail.Length - 1));
                data.SetValue("total_fee", Convert.ToInt32(payPrice * 100));
                data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
                data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));
                data.SetValue("notify_url", address);
                //data.SetValue("goods_tag", "test");
                data.SetValue("trade_type", "JSAPI");
                data.SetValue("openid", WeHelper.Code2Session(code).openid);

                XcxPayData result   = XcxPayApi.UnifiedOrder(data);
                var        flag     = true;
                var        msg      = "";
                var        nonceStr = "";
                var        appId    = "";
                var        package  = "";
                var        mch_id   = "";
                if (!result.IsSet("appid") || !result.IsSet("prepay_id") || result.GetValue("prepay_id").ToString() == "")
                {
                    flag = false;
                    msg  = "下单失败";
                    return(Json(new { Result = false, Msg = "下单失败!" }));
                }
                else
                {
                    //统一下单

                    ///TO Do......
                    /// 修改订单状态

                    nonceStr = result.GetValue("nonce_str").ToString();
                    appId    = result.GetValue("appid").ToString();
                    mch_id   = result.GetValue("mch_id").ToString();
                    package  = "prepay_id=" + result.GetValue("prepay_id").ToString();
                }
                var        signType  = "MD5";
                var        timeStamp = ((DateTime.Now.Ticks - TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)).Ticks) / 10000).ToString();
                XcxPayData applet    = new XcxPayData();
                applet.SetValue("appId", appId);
                applet.SetValue("nonceStr", nonceStr);
                applet.SetValue("package", package);
                applet.SetValue("signType", signType);
                applet.SetValue("timeStamp", timeStamp);
                var appletSign = applet.MakeSign();
                return(Json(new { timeStamp, nonceStr, package, signType, paySign = appletSign, Result = flag, msg }));
            }
            catch (Exception ex)
            {
                return(Json(new { Result = false, msg = "缺少参数" }));
            }
            #endregion
        }