微信公众平台开发 - 简单DEMO（C#）

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.Security;

using System.Collections;

using System.Xml;

using System.Xml.Linq;

using System.IO;

using System.Text;

using System.Text.RegularExpressions;



public partial class wx : System.Web.UI.Page

{

    const string Token = "mrlenon";//你的token



    protected void Page_Load(object sender, EventArgs e)

    {

        string postStr = "";

        if (Request.HttpMethod.ToLower() == "post")

        {

            System.IO.Stream s = System.Web.HttpContext.Current.Request.InputStream;

            byte[] b = new byte[s.Length];

            s.Read(b, 0, (int)s.Length);

            postStr = System.Text.Encoding.UTF8.GetString(b);

            if (!string.IsNullOrEmpty(postStr))

            {

                //ResponseMsg(postStr);

                Response.Write(ResponseMsg(postStr));

                Response.End();

            }

            //WriteLog("postStr:" + postStr);

        }

        else

        {

            Valid();

        }

    }



    /// <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 = Request.QueryString["signature"].ToString();

        string timestamp = Request.QueryString["timestamp"].ToString();

        string nonce = Request.QueryString["nonce"].ToString();

        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;

        }

    }



    private void Valid()

    {

        string echoStr = Request.QueryString["echoStr"].ToString();

        if (CheckSignature())

        {

            if (!string.IsNullOrEmpty(echoStr))

            {

                Response.Write(echoStr);

                Response.End();

            }

        }

    }



    /// <summary>

    /// 返回微信POST过来的结果(微信信息返回)

    /// </summary>

    /// <param name="weixinXML">微信服务器post过来的数据</param>

    private string ResponseMsg(string weixinXML)

    {

        Hashtable ht = GetXmlName(weixinXML);



        //这里写你的返回信息代码

        StringBuilder sb = new StringBuilder();

        sb.Append("<xml>");

        sb.Append("<ToUserName><![CDATA[" + ht["FromUserName"].ToString() + "]]></ToUserName>");

        sb.Append("<FromUserName><![CDATA[" + ht["ToUserName"].ToString() + "]]></FromUserName>");

        sb.Append("<CreateTime>" + ht["CreateTime"].ToString() + "</CreateTime>");



        sb.Append("<MsgType><![CDATA[" + ht["MsgType"].ToString() + "]]></MsgType>");

        sb.Append("<Content><![CDATA[" + ht["Content"].ToString() + "]]></Content>");





        //switch (ht["MsgType"].ToString())

        //{

        //    case "text":

        //        sb.Append("<MsgType><![CDATA[" + ht["MsgType"].ToString() + "]]></MsgType>");

        //        sb.Append("<Content><![CDATA[" + ht["Content"].ToString() + "]]></Content>");

        //        break;

        //    case "image":

        //        sb.Append("<MsgType><![CDATA[" + ht["MsgType"].ToString() + "]]></MsgType>");

        //        sb.Append("<Content><![CDATA[亲，目前还没有做图片消息处理的功能哦！]]></Content>");

        //        sb.Append("<Image>");

        //        sb.Append("<MediaId><![CDATA[" + ht["MediaId"].ToString() + "]]></MediaId>");

        //        sb.Append("</Image>");

        //        break;

        //    case "voice":

        //        sb.Append("<Content><![CDATA[亲，目前还没有做语音消息处理的功能哦！]]></Content>");

        //        break;

        //    case "video":

        //        sb.Append("<Content><![CDATA[亲，目前还没有做视频消息处理的功能哦！]]></Content>");

        //        break;

        //    case "location":

        //        sb.Append("<Content><![CDATA[亲，目前还没有做地理位置处理的功能哦！]]></Content>");

        //        break;

        //    case "link":

        //        sb.Append("<Content><![CDATA[亲，目前还没有做链接消息处理的功能哦！]]></Content>");

        //        break;

        //}



        sb.Append("</xml>");

        return sb.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>

    /// 写日志(用于跟踪)

    /// </summary>

    private void WriteLog(string strMemo)

    {

        string filename = Server.MapPath("/logs/log.txt");

        if (!Directory.Exists(Server.MapPath("//logs//")))

            Directory.CreateDirectory("//logs//");

        StreamWriter sr = null;

        try

        {

            if (!File.Exists(filename))

            {

                sr = File.CreateText(filename);

            }

            else

            {

                sr = File.AppendText(filename);

            }

            sr.WriteLine(strMemo);

        }

        catch

        {



        }

        finally

        {

            if (sr != null)

                sr.Close();

        }

    }



    /// <summary>

    /// 解析post过来的数据

    /// </summary>

    /// <param name="xmlStr"></param>

    /// <returns></returns>

    private Hashtable GetXmlName(string xmlStr)

    {

        Hashtable ht = new Hashtable(); //创建一个Hashtable实例



        XmlDocument xx = new XmlDocument();

        xx.LoadXml(xmlStr);//加载xml



        //开发者微信号

        XmlNodeList toList = xx.GetElementsByTagName("ToUserName"); //取得节点名为ToUserName的XmlNode集合

        XmlNode toNode = toList[0];

        string toName = toNode.InnerText;



        //发送方帐号（一个OpenID）

        XmlNodeList fromList = xx.GetElementsByTagName("FromUserName"); //取得节点名为FromUserName的XmlNode集合

        XmlNode fromNode = fromList[0];

        string fromName = fromNode.InnerText;



        //消息创建时间 （整型）

        XmlNodeList createTimeList = xx.GetElementsByTagName("CreateTime"); //取得节点名为CreateTime的XmlNode集合

        XmlNode createTimeNode = createTimeList[0];

        string createTimeName = createTimeNode.InnerText;



        //消息类型 text/image/voice/video/location/link

        XmlNodeList msgTypeList = xx.GetElementsByTagName("MsgType"); //取得节点名为MsgType的XmlNode集合

        XmlNode msgTypeNode = msgTypeList[0];

        string msgTypeName = msgTypeNode.InnerText;



        //文本消息内容

        XmlNodeList contentList = xx.GetElementsByTagName("Content"); //取得节点名为CreateTime的XmlNode集合

        XmlNode contentNode = contentList[0];

        string contentName = contentNode.InnerText;



        //图片链接

        XmlNodeList picUrlList = xx.GetElementsByTagName("PicUrl"); //取得节点名为PicUrl的XmlNode集合

        XmlNode picUrlNode = picUrlList[0];

        string picUrlName = picUrlNode.InnerText;



        //图片消息媒体id，可以调用多媒体文件下载接口拉取数据。

        XmlNodeList mediaIdList = xx.GetElementsByTagName("MediaId"); //取得节点名为PicUrl的XmlNode集合

        XmlNode mediaIdNode = mediaIdList[0];

        string mediaIdName = mediaIdNode.InnerText;



        //消息id，64位整型

        XmlNodeList msgIdList = xx.GetElementsByTagName("MsgId"); //取得节点名为MsgId的XmlNode集合

        XmlNode msgIdNode = msgIdList[0];

        string msgIdName = msgIdNode.InnerText;



        ht.Add("ToUserName", toName);

        ht.Add("FromUserName", fromName);

        ht.Add("CreateTime", createTimeName);

        ht.Add("MsgType", msgTypeName);

        ht.Add("Content", contentName);

        //ht.Add("PicUrl", picUrlName);

        //ht.Add("MediaId", mediaIdName);

        //ht.Add("MsgId", msgIdName);



        return ht;

    }

}