微信公共账号代码（简单版）

using System;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Xml;

namespace WebWeiXin
{
    public partial class weixinmsgread : System.Web.UI.Page
    {

        const string Token = "king";        //与那边填写的token一致
        protected void Page_Load(object sender, EventArgs e)
        {
            string postStr = "";
            if (Request.HttpMethod.ToLower() == "post")
            {
                Stream s = HttpContext.Current.Request.InputStream;
                byte[] b = new byte[s.Length];
                s.Read(b, 0, (int)s.Length);
                postStr = Encoding.UTF8.GetString(b);
                WriteTxt(postStr);

                if (!string.IsNullOrEmpty(postStr))
                {
                    try
                    {


                        //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;
                        }

                        PrintMsg(requestXML);
                    }
                    catch (Exception ex)
                    {
                        WriteTxt(ex + "");
                        //throw;
                    }
                }
            }
            else
            {
                Valid();
            }
        }

        private void PrintMsg(RequestXML requestXML)
        {
            string resMsg;
            string resxml;
            switch (requestXML.MsgType)
            {
                case "text":
                    resMsg = "您输入的是：" + requestXML.Content;
                    break;
                case "location":
                    resMsg = "您输入的是：" + requestXML.Location_X + "," + requestXML.Location_Y;
                    break;
                case "image":
                    resMsg = "您输入的是：" + requestXML.PicUrl;
                    break;
                default:
                    resMsg = "<![CDATA[正在建设中，稍等时日，更多精彩……]]>";
                    break;
            }

            resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" +
                     requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) +
                     "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content>"
                     + resMsg
                     + "</Content><FuncFlag>0</FuncFlag></xml>";
            WriteTxt(resxml);
            Response.Write(resxml);
        }

        /// <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"];
            string timestamp = Request.QueryString["timestamp"];
            string nonce = 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;
            }
        }

        private void Valid()
        {
            string echoStr = Request.QueryString["echoStr"];
            if (CheckSignature())
            {
                if (!string.IsNullOrEmpty(echoStr))
                {
                    Response.Write(echoStr);
                    Response.End();
                }
            }
        }



        /// <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>
        /// 记录bug，以便调试
        /// </summary>
        /// <returns></returns>
        public bool WriteTxt(string str)
        {
            try
            {
                FileStream fs = new FileStream(Server.MapPath("/bugLog.txt"), FileMode.Append);
                StreamWriter sw = new StreamWriter(fs);
                //开始写入
                sw.WriteLine(str);
                //清空缓冲区
                sw.Flush();
                //关闭流
                sw.Close();
                fs.Close();
            }
            catch (Exception)
            {
                return false;
            }
            return true;
        }






    }

    //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; }
        }
    }
}

个人小站 欢迎来踩 http://bbsspace.net/