如何使用用C#.net开发微信公众信号接口-创新互联
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weixin _wx = new weixin(); string postStr = ""; if (Request.HttpMethod.ToLower() == "post") { Stream s = System.Web.HttpContext.Current.Request.InputStream; byte[] b = new byte[s.Length]; s.Read(b, 0, (int)s.Length); postStr = Encoding.UTF8.GetString(b); if (!string.IsNullOrEmpty(postStr)) //请求处理 { _wx.Handle(postStr); } } else { _wx.Auth(); } 微信处理类: public class weixin { private string Token = "weixin_token"; //换成自己的token public void Auth() { string echoStr = System.Web.HttpContext.Current.Request.QueryString["echoStr"]; if (CheckSignature()) { if (!string.IsNullOrEmpty(echoStr)) { System.Web.HttpContext.Current.Response.Write(echoStr); System.Web.HttpContext.Current.Response.End(); } } } public void Handle(string postStr) { //封装请求类 XmlDocument doc = new XmlDocument(); doc.LoadXml(postStr); XmlElement rootElement = doc.DocumentElement; XmlNode MsgType = rootElement.SelectSingleNode("MsgType"); RequestXML requestXML = new RequestXML(); requestXML.ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText; requestXML.FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText; requestXML.CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText; requestXML.MsgType = MsgType.InnerText; if (requestXML.MsgType == "text") { requestXML.Content = rootElement.SelectSingleNode("Content").InnerText; } else if (requestXML.MsgType == "location") { requestXML.Location_X = rootElement.SelectSingleNode("Location_X").InnerText; requestXML.Location_Y = rootElement.SelectSingleNode("Location_Y").InnerText; requestXML.Scale = rootElement.SelectSingleNode("Scale").InnerText; requestXML.Label = rootElement.SelectSingleNode("Label").InnerText; } else if (requestXML.MsgType == "image") { requestXML.PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText; } //回复消息 ResponseMsg(requestXML); } ////// 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() { string signature = System.Web.HttpContext.Current.Request.QueryString["signature"]; string timestamp = System.Web.HttpContext.Current.Request.QueryString["timestamp"]; string nonce = System.Web.HttpContext.Current.Request.QueryString["nonce"]; string[] ArrTmp = { Token, timestamp, nonce }; Array.Sort(ArrTmp); //字典排序 string tmpStr = string.Join("", ArrTmp); tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1"); tmpStr = tmpStr.ToLower(); if (tmpStr == signature) { return true; } else { return false; } } /// /// 回复消息(微信信息返回) /// /// private void ResponseMsg(RequestXML requestXML) { try { string resxml = ""; mijiya mi = new mijiya(requestXML.Content,requestXML.FromUserName); if (requestXML.MsgType == "text") { //在这里执行一系列操作,从而实现自动回复内容. string _reMsg = mi.GetReMsg(); if (mi.msgType == 1) { resxml = ""; } else { resxml = " " + ConvertDateTimeInt(DateTime.Now) + " 2 "; resxml += mi.GetRePic(requestXML.FromUserName); resxml += " 1 "; } } else if (requestXML.MsgType == "location") { string city = GetMapInfo(requestXML.Location_X, requestXML.Location_Y); if (city == "0") { resxml = " " + ConvertDateTimeInt(DateTime.Now) + " 1 "; } else { resxml = " " + ConvertDateTimeInt(DateTime.Now) + " 1 "; } } else if (requestXML.MsgType == "image") { resxml = " " + ConvertDateTimeInt(DateTime.Now) + " 1 "; //返回10以内条 //int size = 10; //resxml = " " + ConvertDateTimeInt(DateTime.Now) + " 1 "; } else if (wx_tmsg.GetMsgCount(requestXML.FromUserName) == 0) { resxml = " " + ConvertDateTimeInt(DateTime.Now) + " " + size + " "; //List list = new List (); ////假如有20条查询的返回结果 //for (int i = 0; i < 20; i++) //{ // list.Add("1"); //} //string[] piclist = new string[] { "/Abstract_Pencil_Scribble_Background_Vector_main.jpg", "/balloon_tree.jpg", "/bloom.jpg", "/colorful_flowers.jpg", "/colorful_summer_flower.jpg", "/fall.jpg", "/fall_tree.jpg", "/growing_flowers.jpg", "/shoes_illustration.jpg", "/splashed_tree.jpg" }; //for (int i = 0; i < size && i < list.Count; i++) //{ // resxml += " - "; //} //resxml += "
1 "; } else { resxml = " " + ConvertDateTimeInt(DateTime.Now) + " 1 "; } //WriteTxt(resxml); System.Web.HttpContext.Current.Response.Write(resxml); WriteToDB(requestXML, resxml,mi.pid); } catch (Exception ex) { //WriteTxt("异常:" + ex.Message + "Struck:" + ex.StackTrace.ToString()); wx_logs.MyInsert("异常:" + ex.Message + "Struck:" + ex.StackTrace.ToString()); } } /// " + ConvertDateTimeInt(DateTime.Now) + " 1 /// unix时间转换为datetime /// /// ///private DateTime UnixTimeToTime(string timeStamp) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = long.Parse(timeStamp + "0000000"); TimeSpan toNow = new TimeSpan(lTime); return dtStart.Add(toNow); } /// /// datetime转换为unixtime /// /// ///private int ConvertDateTimeInt(System.DateTime time) { System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)); return (int)(time - startTime).TotalSeconds; } /// /// 调用百度地图,返回坐标信息 /// /// 经度 /// 纬度 ///public string GetMapInfo(string x, string y) { try { string res = string.Empty; string parame = string.Empty; string url = "http://maps.googleapis.com/maps/api/geocode/xml"; parame = "latlng=" + x + "," + y + "&language=zh-CN&sensor=false";//此key为个人申请 res = webRequestPost(url, parame); XmlDocument doc = new XmlDocument(); doc.LoadXml(res); XmlElement rootElement = doc.DocumentElement; string Status = rootElement.SelectSingleNode("status").InnerText; if (Status == "OK") { //仅获取城市 XmlNodeList xmlResults = rootElement.SelectSingleNode("/GeocodeResponse").ChildNodes; for (int i = 0; i < xmlResults.Count; i++) { XmlNode childNode = xmlResults[i]; if (childNode.Name == "status") { continue; } string city = "0"; for (int w = 0; w < childNode.ChildNodes.Count; w++) { for (int q = 0; q < childNode.ChildNodes[w].ChildNodes.Count; q++) { XmlNode childeTwo = childNode.ChildNodes[w].ChildNodes[q]; if (childeTwo.Name == "long_name") { city = childeTwo.InnerText; } else if (childeTwo.InnerText == "locality") { return city; } } } return city; } } } catch (Exception ex) { //WriteTxt("map异常:" + ex.Message.ToString() + "Struck:" + ex.StackTrace.ToString()); return "0"; } return "0"; } /// /// Post 提交调用抓取 /// /// 提交地址 /// 参数 ///string public string webRequestPost(string url, string param) { byte[] bs = System.Text.Encoding.UTF8.GetBytes(param); HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url + "?" + param); req.Method = "Post"; req.Timeout = 120 * 1000; req.ContentType = "application/x-www-form-urlencoded;"; req.ContentLength = bs.Length; using (Stream reqStream = req.GetRequestStream()) { reqStream.Write(bs, 0, bs.Length); reqStream.Flush(); } using (WebResponse wr = req.GetResponse()) { //在这里对接收到的页面内容进行处理 Stream strm = wr.GetResponseStream(); StreamReader sr = new StreamReader(strm, System.Text.Encoding.UTF8); string line; System.Text.StringBuilder sb = new System.Text.StringBuilder(); while ((line = sr.ReadLine()) != null) { sb.Append(line + System.Environment.NewLine); } sr.Close(); strm.Close(); return sb.ToString(); } } private void WriteToDB(RequestXML requestXML,string _xml,int _pid) { wx_tmsg wx = new wx_tmsg(); wx.AddNew(); wx.FromUserName = requestXML.FromUserName; wx.ToUserName = requestXML.ToUserName; wx.MsgType = requestXML.MsgType; wx.Msg = requestXML.Content; wx.Creatime = requestXML.CreateTime; wx.Location_X = requestXML.Location_X; wx.Location_Y = requestXML.Location_Y; wx.Label = requestXML.Label; wx.Scale = requestXML.Scale; wx.PicUrl = requestXML.PicUrl; wx.reply = _xml; wx.pid = _pid; try { wx.Update(); } catch (Exception ex) { wx_logs.MyInsert(ex.Message); //ex.message; } } } //微信请求类 public class RequestXML { private string toUserName=""; ////// 消息接收方微信号,一般为公众平台账号微信号 /// public string ToUserName { get { return toUserName; } set { toUserName = value; } } private string fromUserName = ""; ////// 消息发送方微信号 /// public string FromUserName { get { return fromUserName; } set { fromUserName = value; } } private string createTime = ""; ////// 创建时间 /// public string CreateTime { get { return createTime; } set { createTime = value; } } private string msgType = ""; ////// 信息类型 地理位置:location,文本消息:text,消息类型:image /// public string MsgType { get { return msgType; } set { msgType = value; } } private string content = ""; ////// 信息内容 /// public string Content { get { return content; } set { content = value; } } private string location_X = ""; ////// 地理位置纬度 /// public string Location_X { get { return location_X; } set { location_X = value; } } private string location_Y = ""; ////// 地理位置经度 /// public string Location_Y { get { return location_Y; } set { location_Y = value; } } private string scale = ""; ////// 地图缩放大小 /// public string Scale { get { return scale; } set { scale = value; } } private string label = ""; ////// 地理位置信息 /// public string Label { get { return label; } set { label = value; } } private string picUrl = ""; ////// 图片链接,开发者可以用HTTP GET获取 /// public string PicUrl { get { return picUrl; } set { picUrl = value; } } }
说明: 其中用到的mijiya类,主要是调用数据库进行关键词匹配自动回复内容,可以根据自己的业务情况编写。
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