/// <summary>
/// 将RequestMessageEventBase转换成RequestMessageText类型，其中Content = requestMessage.EventKey
/// </summary>
/// <param name="requestMessageEvent"></param>
/// <returns></returns>
public static RequestMessageText ToRequestMessageText(this IRequestMessageEventBase requestMessageEvent)
{
var requestMessage = requestMessageEvent;
var requestMessageText = new RequestMessageText()
{
FromUserName = requestMessage.FromUserName,
ToUserName = requestMessage.ToUserName,
CreateTime = requestMessage.CreateTime,
MsgId = requestMessage.MsgId,
Content = requestMessage.EventKey
};
return requestMessageText;
}
//<?xml version="1.0" encoding="utf-8"?>
//<xml>
// <ToUserName><![CDATA[gh_a96a4a619366]]></ToUserName>
// <FromUserName><![CDATA[olPjZjsXuQPJoV0HlruZkNzKc91E]]></FromUserName>
// <CreateTime>1357986928</CreateTime>
// <MsgType><![CDATA[text]]></MsgType>
// <Content><![CDATA[中文]]></Content>
// <MsgId>5832509444155992350</MsgId>
//</xml>
/// <summary>
/// 获取XDocument转换后的IRequestMessageBase实例。
/// 如果MsgType不存在，抛出UnknownRequestMsgTypeException异常
/// </summary>
/// <returns></returns>
public static IRequestMessageBase GetRequestEntity(XDocument doc)
{
RequestMessageBase requestMessage = null;
RequestMsgType msgType;
try
{
msgType = MsgTypeHelper.GetRequestMsgType(doc);
switch (msgType)
{
case RequestMsgType.Text:
requestMessage = new RequestMessageText();
break;
case RequestMsgType.Location:
requestMessage = new RequestMessageLocation();
break;
case RequestMsgType.Image:
requestMessage = new RequestMessageImage();
break;
case RequestMsgType.Voice:
requestMessage = new RequestMessageVoice();
break;
case RequestMsgType.Video:
requestMessage = new RequestMessageVideo();
break;
case RequestMsgType.Link:
requestMessage = new RequestMessageLink();
break;
case RequestMsgType.Event:
//判断Event类型
switch (doc.Root.Element("Event").Value.ToUpper())
{
case "ENTER"://进入会话
requestMessage = new RequestMessageEvent_Enter();
break;
case "LOCATION"://地理位置
requestMessage = new RequestMessageEvent_Location();
break;
case "SUBSCRIBE"://订阅（关注）
requestMessage = new RequestMessageEvent_Subscribe();
break;
case "UNSUBSCRIBE"://取消订阅（关注）
requestMessage = new RequestMessageEvent_Unsubscribe();
break;
case "CLICK"://菜单点击
requestMessage = new RequestMessageEvent_Click();
break;
case "SCAN"://二维码扫描
requestMessage = new RequestMessageEvent_Scan();
break;
case "VIEW"://URL跳转
requestMessage = new RequestMessageEvent_View();
break;
case "MASSSENDJOBFINISH":
requestMessage = new RequestMessageEvent_MassSendJobFinish();
break;
default://其他意外类型（也可以选择抛出异常）
requestMessage = new RequestMessageEventBase();
break;
}
break;
default:
throw new UnknownRequestMsgTypeException(string.Format("MsgType：{0} 在RequestMessageFactory中没有对应的处理程序！", msgType), new ArgumentOutOfRangeException());//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
}
EntityHelper.FillEntityWithXml(requestMessage, doc);
}
catch (ArgumentException ex)
{
throw new WXException(string.Format("RequestMessage转换出错！可能是MsgType不存在！，XML：{0}", doc.ToString()), ex);
}
return requestMessage;
}
