/// <summary>
/// 文本消息请求
/// </summary>
/// <param name="requestMessage">请求消息</param>
protected virtual void OnEventSubscribeRequest(RequestMsgEventSubscribe requestMessage)
{
}
/// <summary>
/// 获取消息实例
/// </summary>
/// <param name="doc">XML消息</param>
/// <returns>消息实例</returns>
public static RequestMsgBase GetMessage(XDocument doc)
{
RequestMsgBase message;
var msgtypeStr = doc.Root.Element("MsgType").Value;
var msgType = (RequestMsgType)System.Enum.Parse(typeof(RequestMsgType), msgtypeStr, true);
switch (msgType)
{
case RequestMsgType.Text:
message = new RequestMsgText(doc);
break;
case RequestMsgType.Image:
message = new RequestMsgImage(doc);
break;
case RequestMsgType.Voice:
message = new RequestMsgVoice(doc);
break;
case RequestMsgType.Video:
message = new RequestMsgVideo(doc);
break;
case RequestMsgType.Location:
message = new RequestMsgLocation(doc);
break;
case RequestMsgType.Link:
message = new RequestMsgLink(doc);
break;
case RequestMsgType.Event:
//判断Event类型
var msgEventStr = doc.Root.Element("Event").Value;
var msgEvent =
(RequestMsgEventType)System.Enum.Parse(typeof(RequestMsgEventType), msgEventStr, true);
switch (msgEvent)
{
case RequestMsgEventType.Subscribe: //订阅（关注）
message = new RequestMsgEventSubscribe(doc);
break;
case RequestMsgEventType.Unsubscribe: //取消订阅（关注）
message = new RequestMsgEventUnsubscribe(doc);
break;
case RequestMsgEventType.Scan: //二维码扫描
message = new RequestMsgEventScan(doc);
break;
case RequestMsgEventType.Location: //地理位置
message = new RequestMsgEventLocation(doc);
break;
case RequestMsgEventType.Click: //菜单点击
message = new RequestMsgEventClick(doc);
break;
case RequestMsgEventType.View: //URL跳转
message = new RequestMsgEventView(doc);
break;
case RequestMsgEventType.TemplateSendJobFinish: //URL跳转
message = new RequestMsgEventTemplate(doc);
break;
default: //其他意外类型（也可以选择抛出异常）
throw new TypeNotExistException(string.Format("Event：{0} 在RequestMsgEventType中不存在！", msgEventStr));
}
break;
default:
throw new TypeNotExistException(string.Format("MsgType：{0} 在RequestMsgType不存在！", msgtypeStr));
//为了能够对类型变动最大程度容错（如微信目前还可以对公众账号suscribe等未知类型，但API没有开放），建议在使用的时候catch这个异常
}
return(message);
}
