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标题 C#.net 微信公众账号接口开发
范文
    微信越来越火，微信公众平台成为开发成新宠，本文用C#.net开发微信公众信号接口。
    微信接口地址代码:
    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);
        }
        /// <summary>
        /// 验证微信签名
        /// </summary>
        /// * 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。
        /// <returns></returns>
        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;
          }
        }
        /// <summary>
        /// 回复消息(微信信息返回)
        /// </summary>
        /// <param name="weixinXML"></param>
        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 = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[news]]></MsgType><Content><![CDATA[]]></Content><ArticleCount>2</ArticleCount><Articles>";
                resxml += mi.GetRePic(requestXML.FromUserName);
                resxml += "</Articles><FuncFlag>1</FuncFlag></xml>";
              }
              else
              {
                resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + _reMsg + "]]></Content><FuncFlag>1</FuncFlag></xml>";
              }
            }
            else if (requestXML.MsgType == "location")
            {
              string city = GetMapInfo(requestXML.Location_X, requestXML.Location_Y);
              if (city == "0")
              {
                resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[好啦，我们知道您的位置啦。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
              }
              else
              {
                resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[好啦，我们知道您的位置啦。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
              }
            }
            else if (requestXML.MsgType == "image")
            {
              resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[亲,我没有看懂你的意思。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
              //返回10以内条
              //int size = 10;
              //resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[news]]></MsgType><Content><![CDATA[]]></Content><ArticleCount>" + size + "</ArticleCount><Articles>";
              //List<string> list = new List<string>();
              ////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 += "<item><Title><![CDATA[沈阳-黑龙江]]></Title><Description><![CDATA[元旦特价：￥300 市场价：￥400]]></Description><PicUrl><![CDATA[" + "http://www.hougelou.com" + piclist[i] + "]]></PicUrl><Url><![CDATA[http://www.hougelou.com]]></Url></item>";
              //}
              //resxml += "</Articles><FuncFlag>1</FuncFlag></xml>";
            }
            else if (wx_tmsg.GetMsgCount(requestXML.FromUserName) == 0)
            {
              resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + mi.GetFirst() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
            }
            else
            {
              resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[亲,我没有看懂你的意思。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
            }
            //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());
          }
        }
        /// <summary>
        /// unix时间转换为datetime
        /// </summary>
        /// <param name="timeStamp"></param>
        /// <returns></returns>
        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);
        }
        /// <summary>
        /// datetime转换为unixtime
        /// </summary>
        /// <param name="time"></param>
        /// <returns></returns>
        private int ConvertDateTimeInt(System.DateTime time)
        {
          System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
          return (int)(time - startTime).TotalSeconds;
        }
        /// <summary>
        /// 调用百度地图，返回坐标信息
        /// </summary>
        /// <param name="y">经度</param>
        /// <param name="x">纬度</param>
        /// <returns></returns>
        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";
        }
        /// <summary>
        /// Post 提交调用抓取
        /// </summary>
        /// <param name="url">提交地址</param>
        /// <param name="param">参数</param>
        /// <returns>string</returns>
        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="";
        /// <summary>
        /// 消息接收方微信号，一般为公众平台账号微信号
        /// </summary>
        public string ToUserName
        {
          get { return toUserName; }
          set { toUserName = value; }
        }
        private string fromUserName = "";
        /// <summary>
        /// 消息发送方微信号
        /// </summary>
        public string FromUserName
        {
          get { return fromUserName; }
          set { fromUserName = value; }
        }
        private string createTime = "";
        /// <summary>
        /// 创建时间
        /// </summary>
        public string CreateTime
        {
          get { return createTime; }
          set { createTime = value; }
        }
        private string msgType = "";
        /// <summary>
        /// 信息类型 地理位置:location,文本消息:text,消息类型:image
        /// </summary>
        public string MsgType
        {
          get { return msgType; }
          set { msgType = value; }
        }
        private string content = "";
        /// <summary>
        /// 信息内容
        /// </summary>
        public string Content
        {
          get { return content; }
          set { content = value; }
        }
        private string location_X = "";
        /// <summary>
        /// 地理位置纬度
        /// </summary>
        public string Location_X
        {
          get { return location_X; }
          set { location_X = value; }
        }
        private string location_Y = "";
        /// <summary>
        /// 地理位置经度
        /// </summary>
        public string Location_Y
        {
          get { return location_Y; }
          set { location_Y = value; }
        }
        private string scale = "";
        /// <summary>
        /// 地图缩放大小
        /// </summary>
        public string Scale
        {
          get { return scale; }
          set { scale = value; }
        }
        private string label = "";
        /// <summary>
        /// 地理位置信息
        /// </summary>
        public string Label
        {
          get { return label; }
          set { label = value; }
        }
        private string picUrl = "";
        /// <summary>
        /// 图片链接，开发者可以用HTTP GET获取
        /// </summary>
        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。
随便看

　

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更新时间：2025/5/18 0:26:41