/// <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.MP.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.Link:
rec = new ReceiveMessage.Link();
break;
case ReceiveMessageEnum.Event_Subscribe:
rec = new ReceiveMessage.EventSubscribe();
break;
case ReceiveMessageEnum.Event_Scan:
rec = new ReceiveMessage.EventScan();
break;
case ReceiveMessageEnum.Event_Location:
rec = new ReceiveMessage.EventLocation();
break;
case ReceiveMessageEnum.Event_Click:
rec = new ReceiveMessage.EventClick();
break;
case ReceiveMessageEnum.Event_View:
rec = new ReceiveMessage.EventView();
break;
case ReceiveMessageEnum.Event_MasssEndJobFinish:
rec = new ReceiveMessage.EventMasssEndJobFinish();
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.Signature = context.Request.QueryString["signature"];
this.TimeStamp = context.Request.QueryString["timestamp"];
this.Nonce = context.Request.QueryString["nonce"];
this.Echostr = context.Request.QueryString["echostr"];
this.EncryptType = context.Request.QueryString["encrypt_type"];
this.MsgSignature = context.Request.QueryString["msg_signature"];
if (AppSettings.IsDebug)
{
//DebugLog
Logger.Info("MsgSig = " + MsgSignature);
Logger.Info("Signature = " + Signature);
Logger.Info("TimeStamp = " + TimeStamp);
Logger.Info("Nonce = " + Nonce);
Logger.Info("Echostr = " + Echostr);
Logger.Info("EncryptType = " + EncryptType);
Logger.Info("MsgSignature = " + MsgSignature);
}
if (string.IsNullOrEmpty(this.Signature) ||
string.IsNullOrEmpty(this.TimeStamp) ||
string.IsNullOrEmpty(this.Nonce))
{
throw new Exception("HttpContext信息错误");
}
//校验Token签名(请求来源是否为微信服务器)
if (!CheckSignature.Check(this.Signature, this.TimeStamp, this.Nonce, WechatConfig.Token))
{
throw new Exception("ERR: VerifyURL Fail, 签名校验失败。");
}
int ret = 0;
#region 首次配置服务器信息时，直接返回Echostr
if (!string.IsNullOrEmpty(this.Echostr))
{
context.Response.ContentType = "text/plain";
context.Response.Write(Echostr);
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);
}
if (EncryptType == "aes")
{
//解密
ret = Wxcpt.DecryptMsg(MsgSignature, TimeStamp, Nonce, postDataString, ref postDataString);
if (ret != 0)
{
throw new Exception("ERR: Decrypt Fail, errorCode: " + ret);
}
}
if (AppSettings.IsDebug)
{
Logger.Info("sMsg = " + postDataString);
}
//解析XML
XmlDocument doc = new XmlDocument();
doc.LoadXml(postDataString);
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.ShortVideo:
break;
case ReceiveMessageEnum.Location:
if (ProcessingLocation != null)
{
ProcessingLocationEventArgs e = new ProcessingLocationEventArgs(messageEntity as ReceiveMessage.Location);
ProcessingLocation(this, e);
retMessage = e.ReplyMessage;
}
break;
case ReceiveMessageEnum.Link:
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_Scan:
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_MasssEndJobFinish:
if (ProcessingEventMasssEndJobFinish != null)
{
ProcessingEventMasssEndJobFinishEventArgs e = new ProcessingEventMasssEndJobFinishEventArgs(messageEntity as ReceiveMessage.EventMasssEndJobFinish);
ProcessingEventMasssEndJobFinish(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 replyMsg = ""; //xml格式字符串（明文或加密）
if (retMessage != null)
{
//未加密明文字符串
replyMsg = ReplyMessageBuilder.BuildXml(retMessage);
if (AppSettings.IsDebug)
{
Logger.Info("replyMsg = " + replyMsg);
}
if (EncryptType == "aes")
{
//加密
//replyMsg变为xml格式的密文
ret = Wxcpt.EncryptMsg(replyMsg, TimeStamp, Nonce, ref replyMsg);
if (ret != 0)
{
throw new Exception("ERR: Encrypt Fail, errorCode: " + ret);
}
if (AppSettings.IsDebug)
{
Logger.Info("sEncryptMsg = " + replyMsg);
}
}
}
context.Response.ContentType = "text/plain";
context.Response.Write(replyMsg);
}