WeChat payment for WeChat public account development

string timeStamp = TenPayUtil.GetTimestamp();
                string nonceStr = TenPayUtil.GetNoncestr();
                string paySign = string.Empty;

                //创建支付应答对象
                var packageReqHandler = new RequestHandler(null);

                string spbill_create_ip = Request.UserHostAddress;

                //初始化
                //packageReqHandler.Init();
                //packageReqHandler.SetKey(TenPayInfo.Key);
                //设置package订单参数
                packageReqHandler.SetParameter("appid", appID); //公众账号ID
                packageReqHandler.SetParameter("body", StrUtil.GetCutString(productName, 100)); //不能超过127个字符
                packageReqHandler.SetParameter("mch_id", mchid); //商户号
                packageReqHandler.SetParameter("nonce_str", nonceStr.ToLower()); //随机字符串
                packageReqHandler.SetParameter("notify_url", notifyUrl); //接收财付通通知的URL
                packageReqHandler.SetParameter("openid", openId); //openid
                packageReqHandler.SetParameter("out_trade_no", sp_billno); //商家订单号
                // packageReqHandler.SetParameter("attach", "");          //附加数据  未来可用于区分不同微信支付业务
                packageReqHandler.SetParameter("spbill_create_ip", spbill_create_ip); //用户的公网ip，不是商户服务器IP
                packageReqHandler.SetParameter("total_fee", (onlinePayMoney * 100).ToString("0")); //商品金额,以分为单位(money * 100).ToString()
                packageReqHandler.SetParameter("trade_type", "JSAPI"); //交易类型

                //获取package包
                string sign = packageReqHandler.CreateMd5Sign("key", TenPayInfo.Key);
                packageReqHandler.SetParameter("sign", sign); //交易类型
                string data = packageReqHandler.ParseXML();
                LoggerHelper.Log(data);
                
                //调用统一下单接口请求订单
                var result = TenPayV3Service.Unifiedorder(data);
                LoggerHelper.Log(result);

                var res = XDocument.Parse(result);

                string prepayId = string.Empty;
                if (res.Element("xml").Element("return_code").Value == "SUCCESS")
                {
                    prepayId = res.Element("xml").Element("prepay_id").Value;
                }

                string package = string.Format("prepay_id={0}", prepayId);
                timeStamp = TenPayUtil.GetTimestamp();

                //设置支付参数
                var paySignReqHandler = new RequestHandler(null);
                paySignReqHandler.SetParameter("appId", appID);
                paySignReqHandler.SetParameter("timeStamp", timeStamp);
                paySignReqHandler.SetParameter("nonceStr", nonceStr);
                paySignReqHandler.SetParameter("package", package);
                paySignReqHandler.SetParameter("signType", "MD5");
                paySign = paySignReqHandler.CreateMd5Sign("key", TenPayInfo.Key);

                //将信息传递给支付页面
                ViewBag.appId = appID;
                ViewBag.timeStamp = timeStamp;
                ViewBag.nonceStr = nonceStr;
                ViewBag.package = package;
                ViewBag.paySign = paySign;

<script type="text/javascript">        // 当微信内置浏览器完成内部初始化后会触发WeixinJSBridgeReady事件。
        document.addEventListener(&#39;WeixinJSBridgeReady&#39;, function onBridgeReady() {
            $(function () {                //公众号支付
                jQuery(&#39;#getBrandWCPayRequest&#39;).click(function (e) {
                    WeixinJSBridge.invoke(&#39;getBrandWCPayRequest&#39;, {                        "appId": "@ViewBag.appId", //公众号名称
                        "timeStamp": "@ViewBag.timeStamp", //时间戳
                        "nonceStr": "@ViewBag.nonceStr", //随机串
                        "package": "@Html.Raw(ViewBag.package.ToString())",//扩展包
                        "signType": "MD5", //微信签名方式
                        "paySign": "@ViewBag.paySign" //微信签名                    }, function (res) {                        if (res.err_msg == "get_brand_wcpay_request:ok") {                            //alert("微信支付成功!");
                            window.location.href = "@WxPaySettingConfig.WmallURL/Wmall/TradePay/Success/@ViewBag.ShopId/?orderNo=@orderNoMark";
                        }                        else if (res.err_msg == "get_brand_wcpay_request:cancel") {                            //alert("用户取消支付!");                        }                        else {
                            window.location.href = "/wxpay/jsapi/error/?isPayFail=1&csid=@ViewBag.ShopId&orderNo=@orderNoMark&biztype=1";    
                        }                        // 使用以上方式判断前端返回,微信团队郑重提示：res.err_msg将在用户支付成功后返回ok，但并不保证它绝对可靠。                        //因此微信团队建议，当收到ok返回时，向商户后台询问是否收到交易成功的通知，若收到通知，前端展示交易成功的界面；若此时未收到通知，商户后台主动调用查询订单接口，查询订单的当前状态，并反馈给前端展示相应的界面。                    });
                });
            });            //WeixinJSBridge.log(&#39;yo~ ready.&#39;);
        }, false);    </script>

[HttpPost]
        public void NoticeUrl()
        {
            string xmlString = HttpClientHelper.GetPostString(Request);  5 
            //此处应记录日志
            LoggerHelper.Log(string.Format("【微支付】异步通知参数:{0}", xmlString));  8 
            var returnMsg = new ReturnMessage() { Return_Code = "SUCCESS", Return_Msg = string.Empty };
            //通知消息实体
            NotifyMessage message = null;
            //订单处理相关的方法内全局变量
            bool isNeedDeal = false; //标识订单是否需要处理
            string orderNo = string.Empty; //订单编号 (需要根据商家数据包字段判断所属订单)
            CorpSalesOrder saleOrder = null;
            try
            {
                message = HttpClientHelper.XmlDeserialize<NotifyMessage>(xmlString);
 
                //订单号 获得
                orderNo = message.Out_Trade_No;
                if (string.IsNullOrEmpty(orderNo))
                {
                    throw new InvalidOperationException("未找到该订单信息.");
                } 45                 var doc = new XmlDocument();
                doc.LoadXml(xmlString);
                var dic = new Dictionary<string, string>();
                string sign = string.Empty;
                foreach (XmlNode node in doc.FirstChild.ChildNodes)
                {
                    if (node.Name.ToLower() != "sign")
                        dic.Add(node.Name, node.InnerText);
                    else
                        sign = node.InnerText;
                }
                UnifiedWxPayModel model = UnifiedWxPayModel.CreateUnifiedModel(xddAppId, xddMchid, xddWxkey);
                if (model.ValidateMD5Signature(dic, sign))
                {
                    //处理通知 业务逻辑：
                    if (message.Return_Code == "SUCCESS")
                    {
                        if (message.Result_Code == "SUCCESS")
                        {
　　　　　　　　　　　　　　　　　　　//此处处理支付成功后的业务逻辑
                        }
                        else
                        {
                            throw new InvalidOperationException(string.Format("{0}:{1}", message.Err_Code, message.Err_Code_Des));
                        }
                    }
                    else
                    {
                        throw new InvalidOperationException(message.Return_Msg);
                    }
                }
            }
            catch (InvalidOperationException e)
            {
                //此处记录异常日志
                returnMsg.Return_Code = "FAIL";
                returnMsg.Return_Msg = e.Message;
                LoggerHelper.Log("【微信支付异步通知】出错，订单编号：" + orderNo + "，错误原因:" + e.Message);
            }
            catch (Exception e)
            {
                //此处记录异常日志
                returnMsg.Return_Code = "FAIL";
                returnMsg.Return_Msg = e.Message;
                LoggerHelper.Log("【微信支付异步通知】出错，订单编号：" + orderNo + "，错误原因:" + (e.InnerException == null ? e.Message : e.InnerException.ToString()));
            }
            Response.Write(returnMsg.ToXmlString());
            Response.End();
        }