asp.net微信公众平台

进入微信公众平台网站，这里用测试账号进行演示

点击开发者中心>公众平台测试账号>接口配置信息

在这里输入url和token

测试通过就可以使用填写的url作为服务端来操作了。

下面主要介绍服务端代码

首页代码：

 /// <summary>    /// IndexHander 的摘要说明    /// </summary>    public class IndexHander : IHttpHandler    {        private static log4net.ILog Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);        //http://blueummser-001-site1.site4future.com/IndexHander.ashx        public void ProcessRequest(HttpContext context)        {            Log.Debug("\ncomein");            //由微信服务接收请求，具体处理请求            WeiXinService wxService = new WeiXinService(context.Request);            string responseMsg = wxService.Response();            context.Response.Clear();            context.Response.Charset = "UTF-8";            context.Response.Write(responseMsg);            context.Response.End();            Log.Debug("responseMsg:" + responseMsg);            Log.Debug("comeout\n");        }        public bool IsReusable        {            get            {                return false;            }        }

Services代码：注：除去token验证之外，所有的请求方式都为post方式，,微信服务器发来的是一串xml字符串，这里将其转换为xml文档

 public class WeiXinService    {        private static log4net.ILog Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);        private static readonly string TOKEN = "bluesummer";        private HttpRequest Request;        public WeiXinService(HttpRequest httpRequest)        {            Request = httpRequest;        }        public string Response()        {            string method = Request.HttpMethod.ToUpper();            Log.Debug("method:" + method);            //验证签名            if (method == "GET")            {                bool checkResult = CheckSignature();                Log.Debug("checkResult:" + checkResult);                if (checkResult)                    return Request.QueryString["echostr"];                else                    return "error";            }            //处理消息            if (method == "POST")                return ResponseMsg();            else                return "无法处理";        }        /// <summary>        /// 处理请求        /// </summary>        /// <returns></returns>        private string ResponseMsg()        {            string requestXml = Common.ReadRequest(this.Request);            Log.Debug("requestXml:" + requestXml);            IHandler handler = HanderFactory.CreateHander(Common.ConvertXmlStr(requestXml));            if (handler != null)            {                return handler.HandleRequest();            }            return string.Empty;        }        /// <summary>        /// 检查签名        /// </summary>        /// <param name="request"></param>        /// <returns></returns>        private bool CheckSignature()        {            string signature = this.Request.QueryString["signature"];            string timestamp = this.Request.QueryString["timestamp"];            string nonce = this.Request.QueryString["nonce"];            Log.Debug("signature：" + signature);            Log.Debug("timestamp：" + timestamp);            Log.Debug("nonce：" + 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>        /// SHA1加密        /// </summary>        /// <param name="intput">输入字符串</param>        /// <returns>加密后的字符串</returns>        public static string SHA1Encrypt(string intput)        {            byte[] StrRes = Encoding.Default.GetBytes(intput);            HashAlgorithm mySHA = new SHA1CryptoServiceProvider();            StrRes = mySHA.ComputeHash(StrRes);            StringBuilder EnText = new StringBuilder();            foreach (byte Byte in StrRes)            {                EnText.AppendFormat("{0:x2}", Byte);            }            return EnText.ToString();        }    }

HandlerFactory:主要负责事件和普通文本两种请求的处理

  public class HanderFactory    {        private static log4net.ILog Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);        public static IHandler CreateHander(XmlDocument xmldoc)        {            XmlNode MsgType = xmldoc.SelectSingleNode("/xml/MsgType");            Log.Debug("MsgType:" + MsgType.InnerText);            if (MsgType != null)            {                switch (MsgType.InnerText.ToLower())                {                    case "event":                        return new EventHandler(xmldoc);//事件处理                    case "text":                       return new TextHandler(xmldoc);;//接受文本消息处理                    default:                        break;                }            }            return null;        }    }

附上texthandler代码：

 public class TextHandler : IHandler    {        private static log4net.ILog Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);        /// <summary>        /// 请求的xml        /// </summary>        private XmlDocument RequestXml { get; set; }        /// <summary>        /// 构造函数        /// </summary>        /// <param name="requestXml"></param>        public TextHandler(XmlDocument xmlDoc)        {            this.RequestXml = xmlDoc;        }        /// <summary>        /// 处理请求        /// </summary>        /// <returns></returns>        public string HandleRequest()        {            Log.Debug("TextHander:HandleRequest");            string response = string.Empty;            try            {                TextMessage tm = TextMessage.LoadFromXml(RequestXml);                IReplay replaydemo = new IReplay()                {                    ToUserName = tm.FromUserName,                    FromUserName = tm.ToUserName,                    CreateTime = Common.GetNowTime()                };                IReplay replay = new TextReplay(replaydemo, "文字格式错误"); ;                Log.Debug("TextHander:new TextMessage()ok");                switch (tm.Content)                {                    case "你好":                        replay = new TextReplay(replaydemo, "你好");                        break;                    case "图文列表":                        List<NewsItem> list = new List<NewsItem>();                        NewsItem item = new NewsItem("title", "descrip", "http://b.hiphotos.baidu.com/image/pic/item/9f510fb30f2442a7f0a17475d243ad4bd01302b6.jpg", "http://www.soso.com/");                        NewsItem item2 = new NewsItem("title2", "descrip2", "http://d.hiphotos.baidu.com/image/pic/item/f7246b600c33874438f06f7d530fd9f9d72aa0fe.jpg", "http://www.soso.com/");                        list.Add(item); list.Add(item2);                        replay = new NewsMainReplay(replaydemo, "2", list);                        break;                }                Log.Debug("TextHander:new TextReplay()ok");                response = replay.GetReplayXml();                Log.Debug("response:" + response);            }            catch (Exception e)            {                Log.Debug("Exception:" + e.Message);            }            return response;        }    }

回复的文字格式同样要以xml格式回复

 public class TextReplay : IReplay    {        private static log4net.ILog Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);               public string Content { get; set; }        public TextReplay(IReplay replay, string Content)        {            this.ToUserName = replay.ToUserName;            this.FromUserName = replay.FromUserName;            this.CreateTime = replay.CreateTime;            this.Content = Content;        }        public override string GetReplayXml()        {            Log.Debug("come TextReplay GetReplayXml()");            string xmlStr = @"<xml>                    <ToUserName><![CDATA[{0}]]></ToUserName>                    <FromUserName><![CDATA[{1}]]></FromUserName>                    <CreateTime>{2}</CreateTime>                    <MsgType><![CDATA[text]]></MsgType>                    <Content><![CDATA[{3}]]></Content>                    </xml>";            return string.Format(xmlStr, ToUserName, FromUserName, CreateTime, Content);        }    }