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《微信企业号开发日志》之接收普通消息

接收普通消息

普通消息是指员工向企业号应用发送的消息，包括文本、图片、语音、视频、地理位置等类型。普通消息会推送到每个应用在管理端设置的URL（以下假设该URL为http://api.3dept.com）。

请求说明

Http请求方式: POST

http://api.3dept.com/?msg_signature=ASDFQWEXZCVAQFASDFASDFSS&timestamp=13500001234&nonce=123412323

text消息

参数	说明
ToUserName	企业号CorpID
FromUserName	员工UserID
CreateTime	消息创建时间（整型）
MsgType	消息类型，此时固定为：text
Content	文本消息内容
MsgId	消息id，64位整型
AgentID	企业应用的id，整型。可在应用的设置页面查看

image消息

参数	说明
ToUserName	企业号CorpID
FromUserName	员工UserID
CreateTime	消息创建时间（整型）
MsgType	消息类型，此时固定为：image
PicUrl	图片链接
MediaId	图片媒体文件id，可以调用获取媒体文件接口拉取数据
MsgId	消息id，64位整型
AgentID	企业应用的id，整型。可在应用的设置页面查看

voice消息

参数	说明
ToUserName	企业号CorpID
FromUserName	员工UserID
CreateTime	消息创建时间（整型）
MsgType	消息类型，此时固定为：voice
MediaId	语音媒体文件id，可以调用获取媒体文件接口拉取数据
Format	语音格式，如amr，speex等
MsgId	消息id，64位整型
AgentID	企业应用的id，整型。可在应用的设置页面查看

video消息

参数	说明
ToUserName	企业号CorpID
FromUserName	员工UserID
CreateTime	消息创建时间（整型）
MsgType	消息类型，此时固定为：video
MediaId	视频媒体文件id，可以调用获取媒体文件接口拉取数据
ThumbMediaId	视频消息缩略图的媒体id，可以调用获取媒体文件接口拉取数据
MsgId	消息id，64位整型
AgentID	企业应用的id，整型。可在应用的设置页面查看

location消息

参数	说明
ToUserName	企业号CorpID
FromUserName	员工UserID
CreateTime	消息创建时间（整型）
MsgType	消息类型，此时固定为：location
Location_X	地理位置纬度
Location_Y	地理位置经度
Scale	地图缩放大小
Label	地理位置信息
MsgId	消息id，64位整型
AgentID	企业应用的id，整型。可在应用的设置页面查看

---------------------------------------日志开始----------------------------------------------------------

整个被动响应的代码图如下

根据以上信息，我们创建如下几个类，

分组代码图：

类图：

RequestBase为所有接受信息基类,普通消息可直接继承

RequestEvent继承RequestBase，为事件消息的基类

微信接收信息分两种：

一种是接收普通消息(直接继承RequestBase类)

另一种是接收事件(继承RequestEvent类)

微信的消息类型结构如图所示

RequestBase.cs

    /// <summary>
    /// 接受消息基类
    /// </summary>
    public class RequestBase
    {

        public bool LoadStatus = true;
        public string ErrorMsg = String.Empty;

        /// <summary>
        /// 如果消息类型或消息事件没处理，通过这个构造实例化XML_Request对象
        /// </summary>
        /// <param name="table"></param>
        /// <param name="LoaderrorMsg"></param>
        public RequestBase(Dictionary<string, string> table, string LoaderrorMsg)
        {
            this.ToUserName = table["ToUserName"];
            this.FromUserName = table["FromUserName"];
            this.CreateTime = table["CreateTime"];
            this.MsgType = table["MsgType"];
            this.AgentID = table["AgentID"];

            LoadStatus = false;
            ErrorMsg = LoaderrorMsg;
        }

        public RequestBase(Dictionary<string, string> table)
        {
            this.ToUserName = table["ToUserName"];
            this.FromUserName = table["FromUserName"];
            this.CreateTime = table["CreateTime"];
            this.MsgType = table["MsgType"];
            this.AgentID = table["AgentID"];
        }


        /// <summary>
        /// 微信企业号 
        /// </summary>
        public string ToUserName { set; get; }
        /// <summary>
        /// 员工UserID 
        /// </summary>
        public string FromUserName { set; get; }
        /// <summary>
        /// 消息创建时间 （整型） 
        /// </summary>
        public string CreateTime { set; get; }
        /// <summary>
        /// 消息类型
        /// </summary>
        public string MsgType { set; get; }
        /// <summary>
        /// 应用程序ID
        /// </summary>
        public string AgentID { set; get; }
    }

RequestText.cs

    /// <summary>
    /// 文本消息
    /// </summary>
    public class RequestText : RequestBase
    {
        /*
     <xml>
         <ToUserName><![CDATA[wx78fc2f1a2c006ec1]]></ToUserName>
         <FromUserName><![CDATA[garson_zhang@163.com]]></FromUserName>
         <CreateTime>1413269690</CreateTime>
         <MsgType><![CDATA[text]]></MsgType>
         <Content><![CDATA[22]]></Content>
         <MsgId>4634274969423970332</MsgId>
         <AgentID>1</AgentID>
     </xml>
         
         */

        public RequestText(Dictionary<string, string> table)
            : base(table)
        {
            this.Content = table["Content"];
            this.MsgId = table["MsgId"];

        }

        public string Content { set; get; }
        public string MsgId { set; get; }

    }

RequestEvent.cs

    /// <summary>
    /// 上报菜单事件
    /// </summary>
    public class RequestEvent : RequestBase
    {
        public RequestEvent(Dictionary<string, string> table)
            : base(table)
        {
            this.Event = table["Event"];
        }

        public string Event { set; get; }
    }

RequestEvent_Click.cs

    /// <summary>
    /// 上报菜单点击事件
    /// </summary>
    public class RequestEvent_Click : RequestEvent
    {
        /*
    <xml>
        <ToUserName><![CDATA[toUser]]></ToUserName>
        <FromUserName><![CDATA[FromUser]]></FromUserName>
        <CreateTime>123456789</CreateTime>
        <MsgType><![CDATA[event]]></MsgType>
        <Event><![CDATA[CLICK]]></Event>
        <EventKey><![CDATA[EVENTKEY]]></EventKey>
        <AgentID>1</AgentID>
    </xml>
         */

        public RequestEvent_Click(Dictionary<string, string> table)
            : base(table)
        {

            //this.ToUserName = table["ToUserName"];
            //this.FromUserName = table["FromUserName"];
            //this.CreateTime = table["CreateTime"];
            //this.MsgType = table["MsgType"];
            this.EventKey = table["EventKey"];
        }

        public string EventKey { set; get; }
    }

LoadXML.cs，把XML子付出啊转换为对应的消息类型

    /// </summary>
    /// 消息工厂
    /// </summary>
    public class LoadXML
    {
        public static RequestBase GetRequest(string XML)
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(XML);
            XmlNode root = doc.FirstChild;

            Dictionary<string, string> table = new Dictionary<string, string>();
            foreach (XmlNode v in root.ChildNodes)
            {
                table.Add(v.Name, v.InnerText);
            }
            RequestBase xmlRequest = null;

            switch (table["MsgType"])
            {
                case RequestMessageType.text:
                    {
                        xmlRequest = new RequestText(table);
                    }; break;
                case RequestMessageType.fevent:
                    {
                        switch (table["Event"])
                        {
                            case RequestMessageEventType.click:
                                {
                                    xmlRequest = new RequestEvent_Click(table);
                                }; break;
                            default:
                                {
                                    xmlRequest = new RequestBase(table, "此点击事件无效,服务器没有处理该事件的操作！
事件类型:" + table["Event"]);
                                }; break;
                        }

                    }; break;
                default:
                    {
                        xmlRequest = new RequestBase(table, "服务器没有处理该消息的操作！
消息类型:" + table["MsgType"]);
                    }; break;
            }
            return xmlRequest;
        }
    }

-----------------------------------------------------------功能实现-----------------------------------------------------------------------------------------

定义一个加密解密类，继承自WXBizMsgCrypt

    /// <summary>
    /// 响应消息，处理中心
    /// </summary>
    public class WXBizMsgCryptAPI : WXBizMsgCrypt
    {
        #region 字段属性
        /// <summary>
        /// Token可由企业任意填写，用于生成签名
        /// </summary>
        public string Token { get; set; }

        /// <summary>
        /// EncodingAESKey用于消息体的加密，是AES密钥的Base64编码
        /// </summary>
        public string EncodingAESKey { get; set; }
        /// <summary>
        /// 集团ID
        /// </summary>
        public string CorpID { get; set; }
        /// <summary>
        /// 微信加密签名，msg_signature结合了企业填写的token、请求中的timestamp、nonce参数、加密的消息体 
        /// </summary>
        public string msg_signature { get; set; }
        /// <summary>
        /// 时间戳，对应URL参数的timestamp
        /// </summary>
        public string timestamp { get; set; }
        /// <summary>
        /// 随机串，对应URL参数的nonce
        /// </summary>
        public string nonce { get; set; }
        /// <summary>
        /// 加密的随机字符串，以msg_encrypt格式提供。需要解密并返回echostr明文，解密后有random、msg_len、msg、$CorpID四个字段，其中msg即为echostr明文 
        /// </summary>
        public string echostr { get; set; }

        #endregion 字段属性

        public WXBizMsgCryptAPI(string stoken, string sEncodingAESKey, string sCorpID, string signature, string stimestamp, string snonce)
            : base(stoken, sEncodingAESKey, sCorpID)
        {
            Token = stoken;
            EncodingAESKey = sEncodingAESKey;
            CorpID = sCorpID;
            msg_signature = signature;
            timestamp = stimestamp;
            nonce = snonce;
        }

        /// <summary>
        /// 检验消息的真实性，并且获取解密后的明文
        /// </summary>
        /// <param name="sReqData">密文，对应POST请求的数据</param>
        /// <param name="sMsg">解密后的原文，当return返回0时有效</param>
        /// <returns>成功0，失败返回对应的错误码</returns>
        public int DecryptMsg(string sReqData, ref string sMsg)
        {
            return this.DecryptMsg(msg_signature, timestamp, nonce, sReqData, ref sMsg);
        }

        /// <summary>
        /// 将企业号回复用户的消息加密打包
        /// </summary>
        /// <param name="sReplyMsg">企业号待回复用户的消息，xml格式的字符串</param>
        /// <param name="sEncryptMsg">加密后的可以直接回复用户的密文，包括msg_signature, timestamp, nonce, encrypt的xml格式的字符串,当return返回0时有效</param>
        /// <returns>成功0，失败返回对应的错误码</returns>
        public int EncryptMsg(string sReplyMsg, ref string sEncryptMsg)
        {
            return this.EncryptMsg(sReplyMsg, timestamp, nonce, ref sEncryptMsg);
        }

        /// <summary>
        /// 获得加密后的XML，返回给微信服务器
        /// </summary>
        /// <param name="sReqTimeStamp"></param>
        /// <param name="sReqNonce"></param>
        /// <returns></returns>
        public string GetDocument(string sRespData, string sReqTimeStamp, string sReqNonce)
        {
            //string sRespData = xmlPost.GetXML();
            string sEncryptMsg = ""; //xml格式的密文

            int ret = EncryptMsg(sRespData, sReqTimeStamp, sReqNonce, ref sEncryptMsg);
            if (ret != 0)
            {
                System.Console.WriteLine("ERR: EncryptMsg Fail, ret: " + ret);
                return "";
            }
            // TODO:
            // 加密成功，企业需要将加密之后的sEncryptMsg返回
            return sEncryptMsg;
            // HttpUtils.SetResponse(sEncryptMsg);
        }

        /// <summary>
        /// 获得加密后的XML，返回给微信服务器
        /// </summary>
        /// <returns></returns>
        public string GetDocument(string sRespData)
        {
            //string sRespData = xmlPost.GetXML();
            string sEncryptMsg = ""; //xml格式的密文
            int ret = EncryptMsg(sRespData, ref sEncryptMsg);
            if (ret != 0)
            {
                System.Console.WriteLine("ERR: EncryptMsg Fail, ret: " + ret);
                return "";
            }
            // TODO:
            // 加密成功，企业需要将加密之后的sEncryptMsg返回
            return sEncryptMsg;
            // HttpUtils.SetResponse(sEncryptMsg);
        }

    }

消息处理类CustomMessageHandler：

    public class CustomMessageHandler
    {
        /// <summary>
        /// 微信企业号相应中心
        /// </summary>
        WXBizMsgCryptAPI apidata;

        /// <summary>
        /// 当前消息类
        /// </summary>
        RequestBase CurrentMessage;

        /// <summary>
        /// 要返回(响应)的xml文档
        /// </summary>
        public Response_Base ResponseDocument;

        /// <summary>
        /// 是否取消操作，当产生错误，或者异常发生的时候，不处理，直接返还错误消息
        /// </summary>
        private bool CancelHandle = false;


        /// <summary>
        /// 最大上下文消息数
        /// </summary>
        public int MaxMsgContextCount { get; set; }

        /// <summary>
        /// 最大命令数
        /// </summary>
        public int MaxCommandContextCount { get; set; }


        private static MessageContext MsgContext = new MessageContext(MsgContext_MsgContextChanged);

        /// <summary>
        /// 这里需要添加的命令
        /// </summary>
        /// <param name="CurrentMsg"></param>
        private static void MsgContext_MsgContextChanged(RequestBase CurrentMsg)
        {
            if (false)
                MsgContext.InsertCommandContext(CurrentMsg);
        }


        public MessageContextHandler CurrentMessageContext
        {
            get
            {
                return MsgContext.GetMessageContext(CurrentMessage.FromUserName);
            }
        }


        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="sapidata"></param>
        /// <param name="InputStream"></param>
        /// <param name="MaxMsgContextCount">最大上下文消息数</param>
        /// <param name="MaxCommandContextCount">最大上下文命令数</param>
        public CustomMessageHandler(WXBizMsgCryptAPI sapidata, System.IO.Stream InputStream, int MaxMsgContextCount, int MaxCommandContextCount)
        {
            MsgContext.MsgContextMaxCount = MaxMsgContextCount;
            MsgContext.MsgCommandMaxCount = MaxCommandContextCount;


            apidata = sapidata;

            InputStream.Position = 0;
            StreamReader reader = new StreamReader(InputStream);
            string sReqData = reader.ReadToEnd();//加密XML信息



            string sMsg = "";  // 解析之后的XML明文

            //本地调试的时候跳过解密，因为本地调试直接发送的就是未经过加密的xml明文
            int ret = apidata.DecryptMsg(sReqData, ref sMsg);
            
            //sMsg = sReqData;

            string tt = String.Format("用户发送消息解密后的明文：
{0}", sMsg);
            CommonTools.WriteText(tt);


            if (ret != 0)
            {
                SetResponse.WriteContent("错误！");
                return;
            }

            CurrentMessage = LoadXML.GetRequest(sMsg);

            if (CurrentMessage.LoadStatus == false)
            {
                OnErrorResponse(CurrentMessage);
            }
            else
                MsgContext.InsertMsgContext(CurrentMessage);
        }

       



        /// <summary>
        /// 处理指令，响应
        /// </summary>
        public void Execute()
        {

            if (CancelHandle) return;//终止处理

            switch (CurrentMessage.MsgType.ToLower())
            {
                case RequestMessageType.text:
                    {
                        OnTextResponse(CurrentMessage as RequestText);
                    }; break;
                case RequestMessageType.fevent:
                    {
                        switch ((CurrentMessage as RequestEvent).Event.ToLower())
                        {
                            case RequestMessageEventType.click:
                                {
                                    OnEventResponse_Click(CurrentMessage as RequestEvent_Click);
                                }; break;
                            default:
                                {
                                    OnErrorResponse(CurrentMessage.FromUserName, CurrentMessage.ToUserName, "此点击事件无效,服务器没有处理该事件的操作！
事件类型:" + RequestMessageType.fevent);
                                }; break;
                        }
                    }; break;
                default:
                    {
                        OnErrorResponse(CurrentMessage.FromUserName, CurrentMessage.ToUserName, "服务器没有处理该消息的操作！
消息类型:" + CurrentMessage.MsgType);
                    }; break;
            }
        }

        


        public string Document { get; set; }


        #region 响应

        /// <summary>
        /// 回复text消息
        /// </summary>
        /// <param name="Content">指令</param>
        void OnTextResponse(RequestText currentMessage)
        {
            DoTextResponse(currentMessage.FromUserName, currentMessage.ToUserName, currentMessage.Content);
        }

        /// <summary>
        /// 相应点击菜单事件
        /// </summary>
        /// <param name="currentMessage"></param>
        void OnEventResponse_Click(RequestEvent_Click currentMessage)
        {
            DoTextResponse(currentMessage.FromUserName, currentMessage.ToUserName, currentMessage.EventKey);
        }

        /// <summary>
        /// 回复错误消息
        /// </summary>
        /// <param name="Content">指令</param>
        void OnErrorResponse(RequestBase currentMessage)
        {
            CancelHandle = true;
            SetDocument_Text(currentMessage.FromUserName, currentMessage.ToUserName, currentMessage.ErrorMsg);
        }

        /// <summary>
        /// 回复错误消息
        /// </summary>
        /// <param name="Content">指令</param>
        void OnErrorResponse(string FromUserName, string ToUserName ,string ErrorMsg)
        {
            CancelHandle = true;
            SetDocument_Text(FromUserName, ToUserName, ErrorMsg);
        }

        #endregion


        #region 指令处理
        /// <summary>
        /// 处理文本指令
        /// </summary>
        /// <param name="FromUserName"></param>
        /// <param name="ToUserName"></param>
        /// <param name="Content"></param>
        void DoTextResponse(string FromUserName, string ToUserName, string Content)
        {
            string xaData = XAData.GetXAData(FromUserName, Content);

            //string xaData = String.Format("你刚刚发送了:{0}", CurrentMessageContext.Contents[0]);

            StringBuilder Recodes = new StringBuilder();
            //Recodes.AppendFormat("
您一共发送了{0}条消息
", CurrentMessageContext.Contents.Length);
            //foreach (string str in CurrentMessageContext.Contents)
            //{
            //    Recodes.AppendFormat("{0}
", str);
            //}

            Recodes.AppendFormat("
<a href="http://xinaoknitting.wicp.net:8088/WX/AttendCardTime.aspx?U=" + CurrentMessage.FromUserName + "">点击这里</a>查看当月考勤。");

            SetDocument_Text(FromUserName, ToUserName, xaData + Recodes.ToString());
        }

        /// <summary>
        /// 返回Text消
        /// </summary>
        /// <param name="FromUserName"></param>
        /// <param name="ToUserName"></param>
        /// <param name="xaData"></param>
        void SetDocument_Text(string FromUserName, string ToUserName, string xaData)
        {
            //生成text响应类
            Response_Text XML = new Response_Text(FromUserName, ToUserName, xaData);
            Document = apidata.GetDocument(XML.GetXML());
        }
        #endregion
    }

MsgRecode

    /// <summary>
    /// 上下文消息标识
    /// </summary>
    public class MsgRecode
    {
        /// <summary>
        /// 微信企业号 
        /// </summary>
        public string ToUserName { set; get; }
        /// <summary>
        /// 员工UserID 
        /// </summary>
        public string FromUserName { set; get; }
        /// <summary>
        /// 消息创建时间 （整型） 
        /// </summary>
        public string CreateTime { set; get; }
        /// <summary>
        /// 消息类型
        /// </summary>
        public string MsgType { set; get; }
        /// <summary>
        /// 应用程序ID
        /// </summary>
        public string AgentID { set; get; }

        /// <summary>
        /// 消息内容
        /// </summary>
        public string Content { set; get; }
    }

MessageContextHandler

    public class MessageContextHandler
    {
        List<MsgRecode> lstMsgContext;//消息上下文
        List<MsgRecode> lstCommandContext;//命令上下文

        /// <summary>
        /// 用户名
        /// </summary>
        public string UserName { get; set; }

        /// <summary>
        /// 消息上下文
        /// </summary>
        public string[] Contents
        {
            get
            {
                return GetContent(lstMsgContext);
            }
        }

        /// <summary>
        /// 命令上下文
        /// </summary>
        public string[] Commands
        {
            get
            {
                return GetContent(lstCommandContext);
            }
        }

        public MessageContextHandler(string UserName, List<MsgRecode> MsgContextList, List<MsgRecode> CommandContextList)
        {
            this.UserName = UserName;
            lstMsgContext = MsgContextList;
            lstCommandContext = CommandContextList;
        }


        #region 自定义函数

        private string[] GetContent(List<MsgRecode> lst)
        {
            string[] tmp = new string[lst.Count];
            for (int i = 0; i < lst.Count; i++)
                tmp[i] = lst[i].Content;
            return tmp;
        }

        #endregion

    }

MessageContext

    public delegate void CurrentMsgContextChanged(RequestBase CurrentMsg);

    /// <summary>
    /// 消息上下文
    /// </summary>
    public class MessageContext
    {
        Dictionary<string, List<MsgRecode>> dcMsgConText=new Dictionary<string,List<MsgRecode>>();
        Dictionary<string, List<MsgRecode>> dcCommandContext=new Dictionary<string,List<MsgRecode>>();

        public event CurrentMsgContextChanged MsgContextChanged;
        public MessageContext(CurrentMsgContextChanged msgContextChanged)
        {
            MsgContextChanged = msgContextChanged;
        }

 

        //消息上下文
        List<MsgRecode> GetMsgContentContext(string userName)
        {
            if (!dcMsgConText.ContainsKey(userName))
                dcMsgConText.Add(userName, new List<MsgRecode>());
            return dcMsgConText[userName];
        }
        //命令上下文
        List<MsgRecode> GetCommandContext(string userName)
        {
            if (!dcCommandContext.ContainsKey(userName))
                dcCommandContext.Add(userName, new List<MsgRecode>());
            return dcCommandContext[userName];
        }


        public MessageContextHandler GetMessageContext(string userName)
        {
            var Msg = GetMsgContentContext(userName);
            var Command = GetCommandContext(userName);

            MessageContextHandler handler = new MessageContextHandler(userName, Msg, Command);

            return handler;
        }



        private int _msgcontextmaxcount = 1;

        /// <summary>
        /// 最大上下文消息树
        /// </summary>
        public int MsgContextMaxCount
        {
            get
            {
                return _msgcontextmaxcount;
            }
            set
            {
                _msgcontextmaxcount = value > 0 ? value : 1;
            }
        }

        private int _msgcommandmaxcount = 1;

        /// <summary>
        /// 最大上下文命令数
        /// </summary>
        public int MsgCommandMaxCount
        {
            get
            {
                return _msgcommandmaxcount;

            }
            set
            {
                _msgcommandmaxcount = value > 0 ? value : 1;
            }
        }

        /// <summary>
        /// 添加消息记录
        /// </summary>
        /// <param name="request"></param>

        public void InsertMsgContext(RequestBase request)
        {
            MsgRecode mr = GetMsgContext(request);
            IntMsgContentContext(mr);
            if (MsgContextChanged != null)
                MsgContextChanged(request);
        }


        /// <summary>
        /// 添加消息记录
        /// </summary>
        /// <param name="request"></param>
        /// <param name="IsCommand">是否是命令，如果是命令，则为true，也可以用MsgContextChanged事件来调用</param>
        public void InsertMsgContext(RequestBase request, bool IsCommand)
        {
            MsgRecode mr = GetMsgContext(request);
            IntMsgContentContext(mr);
            if (IsCommand == true)
                InsertCommandContext(request);
        }





        /// <summary>
        /// 添加命令记录
        /// </summary>
        /// <param name="request"></param>
        public void InsertCommandContext(RequestBase request)
        {
            MsgRecode mr = GetMsgContext(request);
            IntCommandContext(mr);
        }


        #region 自定义辅助函数
       

        void IntMsgContentContext(MsgRecode mr)
        {
            var lstMsgContext = GetMsgContentContext(mr.FromUserName);
            while (lstMsgContext.Count >= MsgContextMaxCount)
                lstMsgContext.RemoveAt(lstMsgContext.Count);
            lstMsgContext.Insert(0, mr);
        }
        void IntCommandContext(MsgRecode mr)
        {
            var lstCommandContext = GetCommandContext(mr.FromUserName);
            while (lstCommandContext.Count >= MsgCommandMaxCount)
                lstCommandContext.RemoveAt(lstCommandContext.Count);
            lstCommandContext.Insert(0, mr);
        }

        private MsgRecode GetMsgContext(RequestBase request)
        {
            MsgRecode mr = new MsgRecode()
                        {
                            ToUserName = request.ToUserName,
                            FromUserName = request.FromUserName,
                            CreateTime = request.CreateTime,
                            MsgType = request.MsgType,
                            AgentID = request.AgentID
                        };
            if (request is RequestText)
                mr.Content = (request as RequestText).Content;
            return mr;
        }

        #endregion

    }

    /// <summary>
    /// 被动响应消息基类
    /// </summary>
    public class Response_Base
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="msgType"></param>
        public Response_Base(string msgType)
        {
            this.MsgType = msgType;
        }

        ///// <summary>
        ///// 获得XML明文
        ///// </summary>
        ///// <returns></returns>
        //public abstract string GetXML();

        /// <summary>
        /// 员工UserID 
        /// </summary>
        public string ToUserName { get; set; }
        /// <summary>
        /// 企业号CorpID 
        /// </summary>
        public string FromUserName { get; set; }
        /// <summary>
        /// 消息创建时间（整型） 
        /// </summary>
        public string CreateTime { get; set; }

        /// <summary>
        /// 消息类型，：text,image,voice,video,news
        /// </summary>
        public string MsgType { get; set; }

        public virtual string GetXML()
        {
            throw new Exception("没有重写GetXML方法");
        }
    }

    /// <summary>
    /// 被动响应消息text
    /// </summary>
    public class Response_Text : Response_Base
    {
        /*
        <xml>
            <ToUserName><![CDATA[toUser]]></ToUserName>
            <FromUserName><![CDATA[fromUser]]></FromUserName> 
            <CreateTime>1348831860</CreateTime>
            <MsgType><![CDATA[text]]></MsgType>
            <Content><![CDATA[this is a test]]></Content>
        </xml>
         */

        string xmlformat = @" <xml>
            <ToUserName><![CDATA[{0}]]></ToUserName>
            <FromUserName><![CDATA[{1}]]></FromUserName> 
            <CreateTime>{2}</CreateTime>
            <MsgType><![CDATA[{3}]]></MsgType>
            <Content><![CDATA[{4}]]></Content>
        </xml>";


        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="toUser">员工UserID </param>
        /// <param name="fromUser">企业号CorpID </param>
        /// <param name="content">文本消息内容  </param>
        /// <param name="createTime">消息创建时间（整型）,参考：APITools.GetCreateTime()</param>
        public Response_Text(string toUser, string fromUser, string content, string createTime)
            : base(RequestMessageType.text)
        {
            this.ToUserName = toUser;
            this.FromUserName = fromUser;
            this.Content = content;
            this.CreateTime = createTime;
        }
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="toUser">员工UserID </param>
        /// <param name="fromUser">企业号CorpID </param>
        /// <param name="content">文本消息内容  </param>
        public Response_Text(string toUser, string fromUser, string content)
            : base(RequestMessageType.text)
        {
            this.ToUserName = toUser;
            this.FromUserName = fromUser;
            this.Content = content;
            this.CreateTime = CorpTools.GetCreateTime();

        }


        /// <summary>
        /// 获得XML文本
        /// </summary>
        /// <returns></returns>
        public override string GetXML()
        {
            return String.Format(xmlformat, ToUserName, FromUserName, CreateTime, MsgType, Content);
        }

        /// <summary>
        /// 文本消息内容 
        /// </summary>
        public string Content { get; set; }
    }

代码贴完了，接下来是接口调用：

public void ProcessRequest(HttpContext context)
        {
            WriteText("开始回调:" + context.Request.Url.ToString());


            //微信接入的测试
            string token = ConfigurationManager.AppSettings["CorpToken"];//从配置文件获取Token
            string CorpID = ConfigurationManager.AppSettings["CorpID"];//从配置文件获取Token
            string EncodingAESKey = ConfigurationManager.AppSettings["EncodingAESKey"];//从配置文件获取Token

            int MaxMsgContextCount = ConvertEx.ToInt(ConfigurationManager.AppSettings["MaxMsgContextCount"], 10);//最大上下文消息数
            int MaxCommandContextCount = ConvertEx.ToInt(ConfigurationManager.AppSettings["MaxCommandContextCount"], 3);//最大命令数
            

            string signature = context.Request["msg_signature"];
            string timestamp = context.Request["timestamp"];
            string nonce = context.Request["nonce"];


            if (context.Request.HttpMethod == "GET")//验证
            {
                WriteText("Get验证");
                

                string echostr = context.Request["echostr"];

                StringBuilder Txt=new StringBuilder();
                Txt.Append("Get微信接口验证
");
                Txt.AppendFormat("signature:{0}
", signature);
                Txt.AppendFormat("timestamp:{0}
", timestamp);
                Txt.AppendFormat("nonce:{0}
", nonce);
                Txt.AppendFormat("echostr:{0}
", echostr);
                Txt.AppendFormat("EncodingAESKey:{0}
", EncodingAESKey);
                Txt.AppendFormat("CorpID:{0}
", CorpID);
                Txt.AppendFormat("CorpToken:{0}
", token);

                CommonTools.WriteText(Txt.ToString());


                string sEchoStr = "";
                bool check = CheckSignatureQY.Check(signature, timestamp, nonce, echostr
                    , EncodingAESKey, CorpID, ref sEchoStr, token);//True表示成功
               
                //WriteText(check ? "True" : "False");

                //check为True成功，Flase失败，失败信息在SechoStr
                CommonTools.WriteText("结果为：" + (check ? "True" : "False"));
                CommonTools.WriteText("验证返回字符串为：" + sEchoStr);
                WriteContent(sEchoStr); //返回随机字符串则表示验证通过

                
            }

            else//消息
            {
                //记录发送的消息
                string url = context.Request.Url.ToString();

                context.Request.InputStream.Position = 0;
                StreamReader reader = new StreamReader(context.Request.InputStream);
                string sReqData = reader.ReadToEnd();//加密XML信息

                string str=String.Format("URL
{0}
XML
{1}",url,sReqData);
                WriteText(str);

                WXBizMsgCryptAPI apidata = new WXBizMsgCryptAPI(token, EncodingAESKey, CorpID, signature, timestamp, nonce);

                CustomMessageHandler messageHandler = new CustomMessageHandler(apidata,context.Request.InputStream,MaxMsgContextCount,MaxCommandContextCount);
                try
                {
                    messageHandler.Execute();

                    WriteContent(messageHandler.Document);
                    return;
                }
                catch (Exception ex)
                {
                    WriteContent("");
                }
                finally
                {
                }
            }
        }

        private void WriteText(string p)
        {
            CommonTools.WriteText(p);
        }

       

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }




        private void WriteContent(string str)
        {
            HttpContext.Current.Response.Write(str);
        }

源代码等稍后奉上！！！！如有疑问，请留言联系

源码下载地址：源码下载

慎于行,敏于思！GGGGGG

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原文地址：https://www.cnblogs.com/GarsonZhang/p/4059059.html