c#微信开发第一章-百家乐凯发k8

/// 

 /// 验证微信签名
 /// 
 /// 
 /// * 将token、timestamp、nonce三个参数进行字典序排序
 /// * 将三个参数字符串拼接成一个字符串进行sha1加密
 /// * 开发者获得加密后的字符串可与signature对比，标识该请求来源于微信。
 private bool checksignature()
 {
 var token = "token"; 
 var signature = httpcontext.current.request.querystring["signature"];
 var timestamp = httpcontext.current.request.querystring["timestamp"];
 var nonce = httpcontext.current.request.querystring["nonce"];
 var echostr = httpcontext.current.request.querystring["echostr"];
 string[] arrtmp = { token, timestamp, nonce };
 array.sort(arrtmp); //字典排序
 var tmpstr = string.join("", arrtmp);
 tmpstr = formsauthentication.hashpasswordforstoringinconfigfile(tmpstr, "sha1");//加密方式
 if (tmpstr.tolower() == signature)
 {
 return true;
 }
 return false;
 }

 #region 接收消息
 /// 

 /// 接收微信发送的xml消息并且解析
 /// 
 private void receivexml()
 {
 var requeststream = httpcontext.current.request.inputstream;
 var requestbyte = new byte[requeststream.length];
 requeststream.read(requestbyte, 0, (int)requeststream.length);
 var requeststr = encoding.utf8.getstring(requestbyte);
 if (!string.isnullorempty(requeststr))
 {
 //封装请求类
 var requestdocxml = new xmldocument();
 requestdocxml.loadxml(requeststr);
 var rootelement = requestdocxml.documentelement;
 if (rootelement == null) return;
 var wxxmlmodel = new wxxmlmodel
 {
  tousername = rootelement.selectsinglenode("tousername").innertext,
  fromusername = rootelement.selectsinglenode("fromusername").innertext,
  createtime = rootelement.selectsinglenode("createtime").innertext,
  msgtype = rootelement.selectsinglenode("msgtype").innertext
 };
 switch (wxxmlmodel.msgtype)
 {
  case "text"://文本
  wxxmlmodel.content = rootelement.selectsinglenode("content").innertext;
  break;
  case "image"://图片
  wxxmlmodel.picurl = rootelement.selectsinglenode("picurl").innertext;
  break;
  case "event"://事件
  wxxmlmodel.event = rootelement.selectsinglenode("event").innertext;
  if (wxxmlmodel.event != "templatesendjobfinish")//关注类型
  {
  wxxmlmodel.eventkey = rootelement.selectsinglenode("eventkey").innertext;
  }
  break;
  default:
  break;
 }
 responsexml(wxxmlmodel);//回复消息
 }
 }
 #endregion
 #region 回复消息
 private void responsexml(wxxmlmodel wxxmlmodel)
 {
 var qrcodeapi = new qrcodeapi();
 var xml = "";
 switch (wxxmlmodel.msgtype)
 {
 case "text"://文本回复
  xml = responsemessage.gettext(wxxmlmodel.fromusername, wxxmlmodel.tousername, wxxmlmodel.content);
  break;
 case "event":
  switch (wxxmlmodel.event)
  {
  case "subscribe":
  if (string.isnullorempty(wxxmlmodel.eventkey))
  {
  xml = responsemessage.gettext(wxxmlmodel.fromusername, wxxmlmodel.tousername, "关注成功");
  }
  else
  {
  xml = responsemessage.subscanqrcode(wxxmlmodel.fromusername, wxxmlmodel.tousername, wxxmlmodel.eventkey);//扫描带参数二维码先关注后推送事件
  }
  break;
  case "scan":
  xml = responsemessage.scanqrcode(wxxmlmodel.fromusername, wxxmlmodel.tousername, wxxmlmodel.eventkey);//扫描带参数二维码已关注 直接推送事件
  break;
  }
  break;
 default://默认回复
  break;
 }
 httpcontext.current.response.write(xml);
 httpcontext.current.response.end();
 }
 #endregion