public class ToAlipayBLL
 {
 private static readonly ToAlipayDAL dal = new ToAlipayDAL();

 static IAopClient client = null;


 public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
 {
  //直接确认，否则打不开 
  return true;
 }


 /// <summary>
 /// 支付宝条码支付
 /// </summary>
 /// <param name="osaleh_osalehID"></param>
 /// <param name="txtPaymentCode">付款码</param>
 /// <param name="orderType"></param>
 /// <param name="user"></param>
 /// <returns></returns>
 public static ResponseDTO GetAlipayRequestExecute(string osaleh_osalehID, string str_osaled_osaledID, string txtPaymentCode, string orderType, UsersEntity user)
 {
  ResponseDTO resp = new ResponseDTO();
  try
  {

   //请根据实际请求需要biz_content参数
   #region biz_content参数

   OrderListModel orderList = new OrderListModel();
   List<ProductDetailModel> goodsList = new List<ProductDetailModel>();
   StringBuilder param = new StringBuilder();

   //商户订单号
   string out_trade_no = System.DateTime.Now.ToString("yyyyMMddHHmmss") + "0000" + osaleh_osalehID; //商户唯一订单号
   orderList.out_trade_no = out_trade_no;
   //支付场景
   orderList.scene = "bar_code";
   //支付授权码
   orderList.auth_code = txtPaymentCode;
   //卖家支付宝用户ID
   orderList.seller_id = "";
   //订单总金额
   //orderList.total_amount = osaled_amount.ToString("#0.00");


   //商品明细
   string goodsName = string.Empty;
   bool IsFlag = true;

   foreach (var item in OsaledList)
   {

   ProductDetailModel detailModel = new ProductDetailModel();
   detailModel.goods_id = "0";
   detailModel.goods_name = "default";
   detailModel.quantity = ((int)item.osaled_qty).ToString();
   detailModel.price = item.osaled_amount.ToString("#0.00");
   detailModel.goods_category = "";
   goodsList.Add(detailModel);
   }
   orderList.goods_detail = goodsList;

   //订单标题
   orderList.subject = goodsName;
   //订单描述
   orderList.body = "";
   //商户操作员编号
   orderList.operator_id = user.user_employeeNo;
   //商户门店编号
   orderList.store_id = "";
   //支付宝店铺编号
   orderList.alipay_store_id = "";
   //机具终端编号
   orderList.terminal_id = "";
   //支付超时时间
   string expire_time = System.DateTime.Now.AddMinutes(30).ToString("yyyy-MM-dd HH:mm:ss");
   orderList.time_expire = expire_time;

   #endregion biz_content参数

   string biz_content = FormatToJson.Serialize(orderList);

   StoreEntity store = StoreBLL.GetStoreEntityByStore_Code(user.user_company);
   //开发者的AppId
   string alipay_appId = "";
   ConfigHelper.alipay_merchant_private_key = string.Format(ConfigHelper.alipay_merchant_private_key, store.Area_Code);
   ConfigHelper.alipay_public_key = string.Format(ConfigHelper.alipay_public_key, store.Area_Code);


   ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);

   client = new DefaultAopClient(ConfigHelper.alipay_serverUrl, alipay_appId, ConfigHelper.alipay_merchant_private_key, "json", ConfigHelper.alipay_version,
       ConfigHelper.alipay_sign_type, ConfigHelper.alipay_public_key, ConfigHelper.alipay_charset);

   AlipayTradePayResponse payResponse = Pay(biz_content);

   string result = payResponse.Body;

   if (payResponse != null)
   {

   switch (payResponse.Code)
   {
    case ToAlipayResultCode.SUCCESS://支付成功
    //业务处理
    resp.Message = "支付成功";
    resp.Status = true;

    break;
    case ToAlipayResultCode.INRROCESS://业务处理中

    StringBuilder sb1 = new StringBuilder();
    sb1.Append("{\"out_trade_no\":\"" + out_trade_no + "\"}");

    //调用查询接口需要进行轮询订单支付结果
    AlipayTradeQueryResponse queryResponse = LoopQuery(sb1.ToString()); //用订单号trade_no进行轮询也是可以的。
    if (queryResponse != null)
    {
     if (queryResponse.Code == ToAlipayResultCode.SUCCESS)
     {
     //支付成功或交易结束
     if (queryResponse.TradeStatus == "TRADE_SUCCESS" || queryResponse.TradeStatus == "TRADE_FINISHED")
     {
      //业务处理

      resp.Message = "支付成功";
      resp.Status = true;
     }
     else
     {
      //支付超时
      resp.Message = "支付超时";
      resp.Status = false;
     }
     }
     else
     {
     //支付失败
     resp.Message = "支付失败，错误代码：" + queryResponse.SubCode + "。描述：" + queryResponse.SubMsg;
     resp.Status = false;
     }
    }

    break;
    case ToAlipayResultCode.FAIL:
    StringBuilder sb2 = new StringBuilder();
    sb2.Append("{\"out_trade_no\":\"" + out_trade_no + "\"}");
    AlipayTradeCancelResponse cancelResponse = Cancel(sb2.ToString());

    if (!string.IsNullOrEmpty(cancelResponse.SubCode))
    {
     resp.Message = "支付失败，错误代码：" + cancelResponse.SubCode + "。描述：" + cancelResponse.SubMsg;
    }
    else
    {
     resp.Message = "支付失败，错误代码：" + payResponse.SubCode + "。描述：" + payResponse.SubMsg;
    }
    //支付失败
    resp.Status = false;

    break;
   }
   }
  }
  else
  {
   resp.Message = "操作失败，未查询到订单信息，请联系管理员！";
   resp.Status = false;
  }
  }
  catch (Exception ex)
  {
  ExceptionLog.ToAlipayLog(ex.Message);//记录日志
  resp.Message = ex.Message;
  resp.Status = false;
  }
  return resp;
 }

 private static AlipayTradePayResponse Pay(string biz_content)
 {
  AlipayTradePayRequest payRequst = new AlipayTradePayRequest();
  payRequst.BizContent = biz_content;


  AlipayTradePayResponse payResponse = client.Execute(payRequst);
  return payResponse;
 }

 private static AlipayTradeCancelResponse Cancel(string biz_content)
 {
  AlipayTradeCancelRequest cancelRequest = new AlipayTradeCancelRequest();
  cancelRequest.BizContent = biz_content;
  AlipayTradeCancelResponse cancelResponse = client.Execute(cancelRequest);


  if (null != cancelResponse)
  {
  if (cancelResponse.Code == ToAlipayResultCode.FAIL && cancelResponse.RetryFlag == "Y")
  {
   // 新开一个线程重试撤销
   ParameterizedThreadStart ParStart = new ParameterizedThreadStart(cancelOrderRetry);
   Thread myThread = new Thread(ParStart);
   object o = biz_content;
   myThread.Start(o);
  }
  }

  return cancelResponse;

 }


 private static void cancelOrderRetry(object o)
 {
  int retryCount = 10;

  for (int i = 0; i < retryCount; ++i)
  {

  Thread.Sleep(5000);
  AlipayTradeCancelRequest cancelRequest = new AlipayTradeCancelRequest();
  cancelRequest.BizContent = o.ToString();

  AlipayTradeCancelResponse cancelResponse = client.Execute(cancelRequest);

  if (null != cancelResponse)
  {
   if (cancelResponse.Code == ToAlipayResultCode.FAIL)
   {
   if (cancelResponse.RetryFlag == "N")
   {
    break;
   }
   }
   if ((cancelResponse.Code == ToAlipayResultCode.SUCCESS))
   {
   break;
   }
  }

  }
 }

 private static AlipayTradeQueryResponse LoopQuery(string biz_content)
 {

  AlipayTradeQueryRequest payRequst = new AlipayTradeQueryRequest();
  payRequst.BizContent = biz_content;

  Dictionary<string, string> paramsDict = (Dictionary<string, string>)payRequst.GetParameters();
  AlipayTradeQueryResponse payResponse = null;

  for (int i = 1; i <= 6; i++)
  {
  Thread.Sleep(5000);

  payResponse = client.Execute(payRequst);
  if (string.Compare(payResponse.Code, ToAlipayResultCode.SUCCESS, false) == 0)
  {
   if (payResponse.TradeStatus == "TRADE_FINISHED"
   || payResponse.TradeStatus == "TRADE_SUCCESS"
   || payResponse.TradeStatus == "TRADE_CLOSED")
   // return payResponse;
   break;
  }

  }

  //未付款交易超时或等待超时。
  if (payResponse.Code == ToAlipayResultCode.FAIL || payResponse.TradeStatus == "TRADE_CLOSED" || payResponse.TradeStatus == "WAIT_BUYER_PAY")
  {
  //撤销订单
  StringBuilder param = new StringBuilder();
  param.Append("{\"out_trade_no\":\"" + payResponse.OutTradeNo + "\"}");
  biz_content = param.ToString();
  Cancel(biz_content);
  }

  return payResponse;

 }
}