实例介绍
【实例简介】
【实例截图】
【核心代码】
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Xml; using System.Web.Security; using System.IO; using System.Text; namespace BigDataMedia.Web.WeiXin { /// <summary> /// WeixinApi 测试所用,简单判断类型自动回复。 /// </summary> //post请求 public class WeixinApi : IHttpHandler { public void ProcessRequest(HttpContext context) { weixin wx = new weixin(); String postStr = String.Empty; if (HttpContext.Current.Request.HttpMethod.ToUpper() == "POST") { Stream s = HttpContext.Current.Request.InputStream; Byte[] b = new Byte[s.Length]; s.Read(b, 0, (Int32)s.Length); postStr = Encoding.UTF8.GetString(b); if (!String.IsNullOrEmpty(postStr)) { wx.Handle(postStr); } } else { wx.Auth(); } } public bool IsReusable { get { return false; } } } //验证token public class weixin { private String Token = ""; public void Auth() { String echoStr = HttpContext.Current.Request.QueryString["echoStr"]; if (CheckSignature()) { if (!String.IsNullOrEmpty(echoStr)) { HttpContext.Current.Response.Write(echoStr); HttpContext.Current.Response.End(); } } } //验证微信签名 private bool CheckSignature() { String signature = HttpContext.Current.Request.QueryString["signature"]; String timestamp = HttpContext.Current.Request.QueryString["timestamp"]; String nonce = HttpContext.Current.Request.QueryString["nonce"]; String[] ArrTmp = { Token, timestamp, nonce }; Array.Sort(ArrTmp); String tmpStr = String.Join("", ArrTmp); tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1"); tmpStr = tmpStr.ToLower(); if (tmpStr == signature) { return true; } else { return false; } } //判断回复类型 public void Handle(String postStr) { 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.MapInfo = rootElement.SelectSingleNode("Label").InnerText; } else if (requestXML.MsgType == "image") { requestXML.PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText; } ResponseMsg(requestXML); } /// <summary> /// 回复消息 /// </summary> /// <param name="weixinXML"></param> private void ResponseMsg(RequestXML requestXML) { String responseContent = String.Empty; if (requestXML.MsgType == "text") { responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName, "已收到消息!"); } else if (requestXML.MsgType == "location") { responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName, "已知道您的位置!"); } else if (requestXML.MsgType == "image") { responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName, "图片已接收!"); } HttpContext.Current.Response.ContentEncoding = Encoding.UTF8; HttpContext.Current.Response.Write(responseContent); } //返回格式化文本XML内容 private String FormatTextXML(String fromUserName, String toUserName, String content) { return "<xml><ToUserName><![CDATA[" fromUserName "]]></ToUserName><FromUserName><![CDATA[" toUserName "]]></FromUserName><CreateTime>" ConvertDateTimeInt(DateTime.Now) "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" content "]]></Content><FuncFlag>1</FuncFlag></xml>"; } private int ConvertDateTimeInt(System.DateTime time) { System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)); return (int)(time - startTime).TotalSeconds; } } //微信请求类 public class RequestXML { private String toUserName = String.Empty; /// <summary> /// 公众号 /// </summary> public String ToUserName { set; get; } private String fromUserName = ""; /// <summary> /// 发送方微信号 /// </summary> public String FromUserName { set; get; } private String createTime = String.Empty; /// <summary> /// 创建时间 /// </summary> public String CreateTime { set; get; } private String msgType = String.Empty; /// <summary> /// 信息类型 地理位置:location,文本消息:text,消息类型:image /// </summary> public String MsgType { set; get; } private String content = String.Empty; /// <summary> /// 信息内容 /// </summary> public String Content { set; get; } private String location_X = String.Empty; /// <summary> /// 地理位置纬度 /// </summary> public String Location_X { set; get; } private String location_Y = String.Empty; /// <summary> /// 地理位置经度 /// </summary> public String Location_Y { set; get; } private String scale = String.Empty; /// <summary> /// 地图缩放大小 /// </summary> public String Scale { set; get; } private String mapInfo = String.Empty; /// <summary> /// 地理位置信息 /// </summary> public String MapInfo { set; get; } private String picUrl = String.Empty; /// <summary> /// 图片链接 /// </summary> public String PicUrl { set; get; } } }
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