C#微信开发第一章

/// <summary> /// 验证微信签名 /// </summary> /// <returns></returns> /// * 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 /// <summary> /// 接收微信发送的XML消息并且解析 /// </summary> 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