如何使用用C#.net开发微信公众信号接口

这篇文章将为大家详细讲解有关如何使用用C#.net开发微信公众信号接口，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

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);    }    /// 
    /// 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 = "" + ConvertDateTimeInt(DateTime.Now) + "2";            resxml += mi.GetRePic(requestXML.FromUserName);            resxml += "1";          }          else          {            resxml = "" + ConvertDateTimeInt(DateTime.Now) + "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) + "" + 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 if (wx_tmsg.GetMsgCount(requestXML.FromUserName) == 0)        {          resxml = "" + ConvertDateTimeInt(DateTime.Now) + "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());      }    }         /// 
    /// 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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