/// <summary>
/// 根据xml获取消息类型实体
/// </summary>
/// <param name="xml">接收到消息解密后的xml</param>
/// <param name="receiveMessageEnum">消息类型枚举</param>
/// <returns>消息类型</returns>
public static ReceiveMessage.Base Parse(XmlDocument xml, ref ReceiveMessageEnum receiveMessageEnum)
{
XmlNode root = xml.FirstChild;
string msgType = root["MsgType"].InnerText.ToLower();
string Event = string.Empty;
if (root["Event"] != null)
{
Event = root["Event"].InnerText.ToLower();
}
receiveMessageEnum = Enums.QY.getEnum(msgType, Event);//ReceiveMessage_backup.getEnum(msgType, Event);
ReceiveMessage.Base rec = null;
switch (receiveMessageEnum)
{
case ReceiveMessageEnum.Unknow:
break;
case ReceiveMessageEnum.Text:
rec = new ReceiveMessage.Text();
break;
case ReceiveMessageEnum.Image:
rec = new ReceiveMessage.Image();
break;
case ReceiveMessageEnum.Voice:
rec = new ReceiveMessage.Voice();
break;
case ReceiveMessageEnum.Video:
rec = new ReceiveMessage.Video();
break;
case ReceiveMessageEnum.ShortVideo:
rec = new ReceiveMessage.ShortVideo();
break;
case ReceiveMessageEnum.Location:
rec = new ReceiveMessage.Location();
break;
case ReceiveMessageEnum.Event_Location:
rec = new ReceiveMessage.EventLocation();
break;
case ReceiveMessageEnum.Event_Click:
rec = new ReceiveMessage.EventClick();
break;
case ReceiveMessageEnum.Event_View:
break;
case ReceiveMessageEnum.Event_Scancode_Push:
break;
case ReceiveMessageEnum.Event_Scancode_Waitmsg:
break;
case ReceiveMessageEnum.Event_Pic_Sysphoto:
break;
case ReceiveMessageEnum.Event_Pic_Photo_Or_Album:
break;
case ReceiveMessageEnum.Event_Pic_Weixin:
break;
case ReceiveMessageEnum.Event_Location_Select:
break;
case ReceiveMessageEnum.Event_Enter_Agent:
rec = new ReceiveMessage.EventEnterAgent();
break;
case ReceiveMessageEnum.Event_Subscribe:
rec = new ReceiveMessage.EventSubscribe();
break;
case ReceiveMessageEnum.Event_Batch_Job_Result:
rec = new ReceiveMessage.EventBatchJobResult();
break;
default:
break;
}
rec.FillReceiveMessageFromXml(xml);
return(rec);
}
/// <summary>
/// 开始处理
/// </summary>
public void Processing()
{
HttpContext context = HttpContext.Current;
if (context == null || context.Request == null)
{
throw new Exception("HttpContext信息错误");
}
//this.MsgSig = HttpUtility.UrlDecode(context.Request.QueryString["msg_signature"], Encoding.UTF8);
//this.TimeStamp = HttpUtility.UrlDecode(context.Request.QueryString["timestamp"], Encoding.UTF8);
//this.Nonce = HttpUtility.UrlDecode(context.Request.QueryString["nonce"], Encoding.UTF8);
//this.Echostr = HttpUtility.UrlDecode(context.Request.QueryString["echostr"], Encoding.UTF8);
this.MsgSig = context.Request.QueryString["msg_signature"];
this.TimeStamp = context.Request.QueryString["timestamp"];
this.Nonce = context.Request.QueryString["nonce"];
this.Echostr = context.Request.QueryString["echostr"];
if (AppSettings.IsDebug)
{
//DebugLog
Logger.Info("MsgSig = " + MsgSig);
Logger.Info("TimeStamp = " + TimeStamp);
Logger.Info("Nonce = " + Nonce);
Logger.Info("Echostr = " + Echostr);
}
if (string.IsNullOrEmpty(this.MsgSig) ||
string.IsNullOrEmpty(this.TimeStamp) ||
string.IsNullOrEmpty(this.Nonce))
{
throw new Exception("HttpContext信息错误");
}
int ret = 0;
#region 微信平台开启回调模式，首次配置服务器信息时，校验服务器URL
if (!string.IsNullOrEmpty(this.Echostr))
{
/*
* ------------使用示例一：验证回调URL---------------
*企业开启回调模式时，企业号会向验证url发送一个get请求
* 假设点击验证时，企业收到类似请求：
* GET /cgi-bin/wxpush?msg_signature=5c45ff5e21c57e6ad56bac8758b79b1d9ac89fd3×tamp=1409659589&nonce=263014780&echostr=P9nAzCzyDtyTWESHep1vC5X9xho%2FqYX3Zpb4yKa9SKld1DsH3Iyt3tP3zNdtp%2B4RPcs8TgAE7OaBO%2BFZXvnaqQ%3D%3D
* HTTP/1.1 Host: qy.weixin.qq.com
*
* 接收到该请求时，企业应
* 1.解析出Get请求的参数，包括消息体签名(msg_signature)，时间戳(timestamp)，随机数字串(nonce)以及公众平台推送过来的随机加密字符串(echostr),
* 这一步注意作URL解码。
* 2.验证消息体签名的正确性
* 3.解密出echostr原文，将原文当作Get请求的response，返回给公众平台
* 第2，3步可以用公众平台提供的库函数VerifyURL来实现。
*/
string sEchoStr = "";
ret = Wxcpt.VerifyURL(this.MsgSig, this.TimeStamp, this.Nonce, this.Echostr, ref sEchoStr);
if (ret != 0)
{
throw new Exception("ERR: VerifyURL Fail, errorCode: " + ret + "。");
}
//ret==0表示验证成功，sEchoStr参数表示明文，用户需要将sEchoStr作为get请求的返回参数，返回给企业号。
context.Response.ContentType = "text/plain";
context.Response.Write(sEchoStr);
return;
}
#endregion
//获取post请求内容
StreamReader postData = new StreamReader(context.Request.InputStream);
string postDataString = postData.ReadToEnd();
if (AppSettings.IsDebug)
{
Logger.Info("postDataString = " + postDataString);
}
string sMsg = ""; // 解析之后的明文
//解密
ret = Wxcpt.DecryptMsg(MsgSig, TimeStamp, Nonce, postDataString, ref sMsg);
if (ret != 0)
{
throw new Exception("ERR: Decrypt Fail, errorCode: " + ret);
}
if (AppSettings.IsDebug)
{
Logger.Info("sMsg = " + sMsg);
}
//解析XML
XmlDocument doc = new XmlDocument();
doc.LoadXml(sMsg);
ReceiveMessageEnum messageType = ReceiveMessageEnum.Unknow;
ReceiveMessage.Base messageEntity = ReceiveMessageParser.Parse(doc, ref messageType);
ReplyMessage.Base retMessage = null;
#region 根据接收消息类型 执行相应事件
switch (messageType)
{
case ReceiveMessageEnum.Unknow:
throw new Exception("未知的接收消息类型。");
case ReceiveMessageEnum.Text:
if (ProcessingText != null)
{
ProcessingTextEventArgs e = new ProcessingTextEventArgs(messageEntity as ReceiveMessage.Text);
ProcessingText(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Image:
if (ProcessingImage != null)
{
ProcessingImageEventArgs e = new ProcessingImageEventArgs(messageEntity as ReceiveMessage.Image);
ProcessingImage(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Voice:
if (ProcessingVoice != null)
{
ProcessingVoiceEventArgs e = new ProcessingVoiceEventArgs(messageEntity as ReceiveMessage.Voice);
ProcessingVoice(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Video:
if (ProcessingVideo != null)
{
ProcessingVideoEventArgs e = new ProcessingVideoEventArgs(messageEntity as ReceiveMessage.Video);
ProcessingVideo(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Location:
if (ProcessingLocation != null)
{
ProcessingLocationEventArgs e = new ProcessingLocationEventArgs(messageEntity as ReceiveMessage.Location);
ProcessingLocation(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Event_Location:
//如果开启位置记录，则缓存
if (this.EnablePositionRecord)
{
if (AppSettings.IsDebug)
{
Logger.Info("enablePositionRecord! key = " + CacheKey.UserLocation + messageEntity.FromUserName);
}
HttpContext.Current.Cache.Insert(CacheKey.UserLocation + messageEntity.FromUserName,
messageEntity,
null,
DateTime.UtcNow.AddHours(this.PositionRecordExpiresHours),
System.Web.Caching.Cache.NoSlidingExpiration);
}
if (ProcessingEventLocation != null)
{
ProcessingEventLocationEventArgs e = new ProcessingEventLocationEventArgs(messageEntity as ReceiveMessage.EventLocation);
ProcessingEventLocation(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Event_Click:
if (ProcessingEventClick != null)
{
ProcessingEventClickEventArgs e = new ProcessingEventClickEventArgs(messageEntity as ReceiveMessage.EventClick);
ProcessingEventClick(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Event_View:
break;
case ReceiveMessageEnum.Event_Scancode_Push:
break;
case ReceiveMessageEnum.Event_Scancode_Waitmsg:
break;
case ReceiveMessageEnum.Event_Pic_Sysphoto:
break;
case ReceiveMessageEnum.Event_Pic_Photo_Or_Album:
break;
case ReceiveMessageEnum.Event_Pic_Weixin:
break;
case ReceiveMessageEnum.Event_Location_Select:
break;
case ReceiveMessageEnum.Event_Enter_Agent:
if (ProcessingEventEnterAgent != null)
{
ProcessingEventEnterAgentEventArgs e = new ProcessingEventEnterAgentEventArgs(messageEntity as ReceiveMessage.EventEnterAgent);
ProcessingEventEnterAgent(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Event_Subscribe:
if (ProcessingEventSubscribe != null)
{
ProcessingEventSubscribeEventArgs e = new ProcessingEventSubscribeEventArgs(messageEntity as ReceiveMessage.EventSubscribe);
ProcessingEventSubscribe(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Event_Batch_Job_Result:
if (ProcessingEventBatchJobResult != null)
{
ProcessingEventBatchJobResultEventArgs e = new ProcessingEventBatchJobResultEventArgs(messageEntity as ReceiveMessage.EventBatchJobResult);
ProcessingEventBatchJobResult(this, e);
retMessage = e.ReplyMessage;
}
break;
default:
throw new Exception("未知的接收消息类型。");
}
#endregion
if (AppSettings.IsDebug)
{
if (retMessage == null)
{
Logger.Info("retMessage = null");
}
else
{
Logger.Log("retMessage = " + retMessage.ToString());
}
}
string sEncryptMsg = ""; //xml格式的密文
if (retMessage != null)
{
//未加密明文字符串
string replyMsg = ReplyMessageBuilder.BuildXml(retMessage);
if (AppSettings.IsDebug)
{
Logger.Info("replyMsg = " + replyMsg);
}
//加密
//string sEncryptMsg = ""; //xml格式的密文
ret = Wxcpt.EncryptMsg(replyMsg, TimeStamp, Nonce, ref sEncryptMsg);
if (ret != 0)
{
throw new Exception("ERR: Encrypt Fail, errorCode: " + ret);
}
if (AppSettings.IsDebug)
{
Logger.Info("sEncryptMsg = " + sEncryptMsg);
}
}
context.Response.ContentType = "text/plain";
context.Response.Write(sEncryptMsg);
}