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