weixin.cs

/*
  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();
                }

*/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);
        }

        /// <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 = 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;
            }
        }
       
        /// <summary>
        /// 回复消息(微信信息返回)
        /// </summary>
        /// <param name="weixinXML"></param>
        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 = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[news]]></MsgType><Content><![CDATA[]]></Content><ArticleCount>2</ArticleCount><Articles>";
                        resxml += mi.GetRePic(requestXML.FromUserName);
                        resxml += "</Articles><FuncFlag>1</FuncFlag></xml>";
                    }
                    else
                    {
                        resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + _reMsg + "]]></Content><FuncFlag>1</FuncFlag></xml>";
                    }
                }
                else if (requestXML.MsgType == "location")
                {
                    string city = GetMapInfo(requestXML.Location_X, requestXML.Location_Y);
                    if (city == "0")
                    {
                        resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[好啦,我们知道您的位置啦。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
                    }
                    else
                    {
                        resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[好啦,我们知道您的位置啦。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
                    }
                }
                else if (requestXML.MsgType == "image")
                {
                    resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[亲,我没有看懂你的意思。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
                    //返回10以内条
                    //int size = 10;
                    //resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[news]]></MsgType><Content><![CDATA[]]></Content><ArticleCount>" + size + "</ArticleCount><Articles>";
                    //List<string> list = new List<string>();
                    ////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 += "<item><Title><![CDATA[沈阳-黑龙江]]></Title><Description><![CDATA[元旦特价:¥300 市场价:¥400]]></Description><PicUrl><![CDATA[" + "http://www.hougelou.com" + piclist[i] + "]]></PicUrl><Url><![CDATA[http://www.hougelou.com]]></Url></item>";
                    //}
                    //resxml += "</Articles><FuncFlag>1</FuncFlag></xml>";
                }
                else if (wx_tmsg.GetMsgCount(requestXML.FromUserName) == 0)
                {
                    resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + mi.GetFirst() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
                   
                }
                else
                {
                    resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[亲,我没有看懂你的意思。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
                   
                }
                //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());
            }
        }
          
        /// <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>
        /// 调用百度地图,返回坐标信息
        /// </summary>
        /// <param name="y">经度</param>
        /// <param name="x">纬度</param>
        /// <returns></returns>
        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";
        }

        /// <summary>
        /// Post 提交调用抓取
        /// </summary>
        /// <param name="url">提交地址</param>
        /// <param name="param">参数</param>
        /// <returns>string</returns>
        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="";
        /// <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; }
        }
}

  

原文地址:https://www.cnblogs.com/bober/p/3071605.html