protected void Page_Load(object sender, EventArgs e)
        {
            //LogHelper.WriteLog(typeof(NativeNotifyPage), "可以运行1-1");

            String xmlData = getPostStr();//获取请求数据

            if (!string.IsNullOrWhiteSpace(xmlData))
            {
                #region Step1.先创建回执XML start
                var dic = new Dictionary <string, string>
                {
                    { "return_code", "SUCCESS" },
                    { "return_msg", "OK" }
                };
                var sb = new StringBuilder();
                sb.Append("<xml>");

                foreach (var d in dic)
                {
                    sb.Append("<" + d.Key + ">" + d.Value + "</" + d.Key + ">");
                }
                sb.Append("</xml>");
                #endregion

                /***将xml转换成实体类***/
                WxPayNotifyData wxData = WeChatPayHelper.GetWxPayNotifyData(xmlData);

                #region step2.检查XML是否合法
                if (WeChatPayHelper.CheckSign(xmlData, wxData.attch))
                {
                    // 创建回写订单的实体类
                    WxOrder order = new WxOrder();
                    // 取得PaymentCode长度
                    int          len = 0;
                    WeChatConfig wxc = WxMastDataHelper.GetWeChatConfig(wxData.attch);
                    if (wxc != null && !string.IsNullOrWhiteSpace(wxc.paymentCode))
                    {
                        len = wxc.paymentCode.Length;
                    }

                    order.appName        = wxData.attch;
                    order.out_trade_no   = wxData.out_trade_no.Substring(len, wxData.out_trade_no.Length - len);
                    order.transaction_id = wxData.transaction_id;
                    order.cash_fee       = wxData.cash_fee;
                    order.fee_type       = wxData.fee_type;
                    order.bank_type      = wxData.bank_type;
                    order.time_end       = wxData.time_end;
                    order.result_code    = wxData.result_code;
                    order.return_code    = wxData.return_code;

                    // 执行回写
                    if (WxOrderHelper.UpdatePayOrder(order) > 0)
                    {
                        // 调用数据导入Exe
                        this.DoExe();
                        // 回写成功时返回SUCCESS
                        return_result = sb.ToString();
                    }
                }
                #endregion
            }
            Response.Write(return_result);
            Response.End();
        }