///<summary>
/// 微信支付回调地址
/// </summary>
/// <returns></returns>
[HttpPost("PayNotifyUrl")]
public ActionResult PayNotifyUrl()
{   ResponseResult result = new ResponseResult();  ResponseHandler resHandler = new ResponseHandler(HttpContext); string return_code = resHandler.GetParameter("return_code"); string return_msg = resHandler.GetParameter("return_msg");   try {   var mch_key = Senparc.Weixin.Config.SenparcWeixinSetting.TenPayV3_Key; resHandler.SetKey(mch_key); var notifyXml = resHandler.ParseXML(); bool signFlag = resHandler.IsTenpaySign(); if (signFlag && return_code.ToUpper() == "SUCCESS") {   string attach = resHandler.GetParameter("attach");   string device_info = resHandler.GetParameter("device_info"); string out_trade_no = resHandler.GetParameter("out_trade_no");   string transaction_id = resHandler.GetParameter("transaction_id");   string total_fee = resHandler.GetParameter("total_fee"); PayOrderNotifyParam param = new PayOrderNotifyParam()  {   PayNo = out_trade_no,  Attach = attach,   PayPrice = decimal.Parse(total_fee) / 100, TransactionNo = transaction_id,    };  //回调参数说明：https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_7&index=3    //Logger.Info(string.Format("支付回调接收参数成功，notifyXml={0},param={1}", notifyXml, param.SerializeObject()));  result = Service.PayNotifyUrl(param);  if (result.errno != 0) {   //回调处理逻辑失败  Logger.Error(string.Format("支付回调处理失败：支付单号:{0},{1}", param.PayNo, result.errmsg));  }   else    {   Logger.Info(string.Format("支付回调处理成功,支付单号：{0}", param.PayNo));  string xml = string.Format(@"<xml> <return_code><![CDATA[{0}]]></return_code>    <return_msg><![CDATA[{1}]]></return_msg>  </xml>", return_code, return_msg);   return Content(xml, "text/xml");  }   }   else    {   //错误的订单处理   Logger.Error(string.Format("支付回调接失败，signFlag={0},notifyXml={1}", signFlag, notifyXml));  }   }   catch (Exception ex)    {   Logger.Error(string.Format("支付回调异常：Message={0}，StackTrace={1}", ex.Message, ex.StackTrace));  }   return Content("fail", "text/xml");
}