public static BaseWeChatXmlMsg CreateMessage(string xml) { if (_queue == null) { _queue = new List <BaseWeChatXmlMsg>(); } else if (_queue.Count >= 50) { _queue = _queue.Where(q => { return(q.CreatedTime.AddSeconds(20) > DateTime.Now); }).ToList();//保留20秒内未响应的消息 } XElement xdoc = XElement.Parse(xml); var msgtype = xdoc.Element("MsgType").Value.ToUpper(); var FromUserName = xdoc.Element("FromUserName").Value; var CreateTime = xdoc.Element("CreateTime").Value; WeChartMsgType type = (WeChartMsgType)Enum.Parse(typeof(WeChartMsgType), msgtype); if (type != WeChartMsgType.EVENT) { var MsgId = xdoc.Element("MsgId").Value; if (_queue.FirstOrDefault(m => { return(m.MsgFlag == MsgId); }) == null) { _queue.Add(new BaseWeChatXmlMsg { CreatedTime = DateTime.Now, FromUserName = FromUserName, MsgFlag = MsgId }); } else { return(null); } } else { if (_queue.FirstOrDefault(m => { return(m.MsgFlag == CreateTime && m.FromUserName == FromUserName); }) == null) { _queue.Add(new BaseWeChatXmlMsg { CreatedTime = DateTime.Now, FromUserName = FromUserName, MsgFlag = CreateTime }); } else { return(null); } } switch (type) { case WeChartMsgType.TEXT: return(WeChatUtils.ConvertXmlToObj <WeChatXmlTextMsg>(xml)); case WeChartMsgType.IMAGE: return(WeChatUtils.ConvertXmlToObj <BaseWeChatXmlMsg>(xml)); case WeChartMsgType.VOICE: return(WeChatUtils.ConvertXmlToObj <BaseWeChatXmlMsg>(xml)); case WeChartMsgType.VIDEO: return(WeChatUtils.ConvertXmlToObj <BaseWeChatXmlMsg>(xml)); case WeChartMsgType.LOCATION: return(WeChatUtils.ConvertXmlToObj <BaseWeChatXmlMsg>(xml)); case WeChartMsgType.LINK: return(WeChatUtils.ConvertXmlToObj <BaseWeChatXmlMsg>(xml)); case WeChartMsgType.EVENT: var enumEventType = (WeChartEvent)Enum.Parse(typeof(WeChartEvent), xdoc.Element("Event").Value.ToUpper()); switch (enumEventType) { case WeChartEvent.CLICK: return(WeChatUtils.ConvertXmlToObj <WeChatXmlNormalMenuEventMsg>(xml)); case WeChartEvent.VIEW: return(WeChatUtils.ConvertXmlToObj <WeChatXmlNormalMenuEventMsg>(xml)); case WeChartEvent.LOCATION: return(WeChatUtils.ConvertXmlToObj <BaseWeChatEventXmlMsg>(xml)); case WeChartEvent.LOCATION_SELECT: return(WeChatUtils.ConvertXmlToObj <BaseWeChatEventXmlMsg>(xml)); case WeChartEvent.SCAN: return(WeChatUtils.ConvertXmlToObj <WeChatScanEventMessage>(xml)); case WeChartEvent.SUBSCRIBE: return(WeChatUtils.ConvertXmlToObj <WeChatSubEventXmlMsg>(xml)); case WeChartEvent.UNSUBSCRIBE: return(WeChatUtils.ConvertXmlToObj <BaseWeChatEventXmlMsg>(xml)); case WeChartEvent.SCANCODE_WAITMSG: return(WeChatUtils.ConvertXmlToObj <BaseWeChatEventXmlMsg>(xml)); default: return(WeChatUtils.ConvertXmlToObj <BaseWeChatEventXmlMsg>(xml)); } default: return(WeChatUtils.ConvertXmlToObj <BaseWeChatXmlMsg>(xml)); } }