.net实现微信公众账号接口开发代码,Asp.Net代码库,德仔网

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【Asp.Net】 .net实现微信公众账号接口开发
作者:Dezai.CN / 发布于2013/10/25/ 1456

	使用.net实现的方法：
	//微信接口地址 页面代码:

	

	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();
	}

	
	具体处理类：

	/// <summary>
	/// 微信公众平台操作类
	/// </summary>
	public class weixin
	{
	private string Token = "my_weixin_token"; //换成自己的token
	public void Auth()
	{
	string echoStr = System.Web.HttpContext.Current.Request.QueryString["echoStr"];
	if (CheckSignature()) //校验签名是否正确
	{
	if (!string.IsNullOrEmpty(echoStr))
	{
	System.Web.HttpContext.Current.Response.Write(echoStr); //返回原值表示校验成功
	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;
	//MsgType
	XmlNode MsgType = rootElement.SelectSingleNode("MsgType");
	//接收的值--->接收消息类(也称为消息推送)
	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;

	//根据不同的类型进行不同的处理
	switch (requestXML.MsgType)
	{
	case "text": //文本消息
	requestXML.Content = rootElement.SelectSingleNode("Content").InnerText;
	break;
	case "image": //图片
	requestXML.PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText;
	break;
	case "location": //位置
	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;
	break;
	case "link": //链接
	break;
	case "event": //事件推送 支持V4.5+
	break;
	}

	//消息回复
	ResponseMsg(requestXML);
	}

	
	/// <summary>
	/// 验证微信签名
	/// * 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。
	/// </summary>
	/// <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"];
	//加密/校验流程：
	//1. 将token、timestamp、nonce三个参数进行字典序排序
	string[] ArrTmp = { Token, timestamp, nonce };
	Array.Sort(ArrTmp);//字典排序
	//2.将三个参数字符串拼接成一个字符串进行sha1加密
	string tmpStr = string.Join("", ArrTmp);
	tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
	tmpStr = tmpStr.ToLower();
	//3.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。
	if (tmpStr == signature)
	{
	return true;
	}
	else
	{
	return false;
	}
	}

	/// <summary>
	/// 消息回复(微信信息返回)
	/// </summary>
	/// <param name="requestXML">The request XML.</param>
	private void ResponseMsg(RequestXML requestXML)
	{
	try
	{
	string resxml = "";
	//主要是调用数据库进行关键词匹配自动回复内容，可以根据自己的业务情况编写。
	//1.通常有，没有匹配任何指令时，返回帮助信息
	AutoResponse mi = new AutoResponse(requestXML.Content, requestXML.FromUserName);

	switch (requestXML.MsgType)
	{
	case "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>";
	}
	break;
	case "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>";
	}
	break;
	case "image":
	//图文混合的消息 具体格式请见官方API&ldquo;回复图文消息&rdquo;
	break;
	}

	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();
	}
	}

	/// <summary>
	/// 将本次交互信息保存至数据库中
	/// </summary>
	/// <param name="requestXML"></param>
	/// <param name="_xml"></param>
	/// <param name="_pid"></param>
	private void WriteToDB(RequestXML requestXML, string _xml, int _pid)
	{
	WeiXinMsg wx = new WeiXinMsg();
	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.Add();
	}
	catch (Exception ex)
	{
	//wx_logs.MyInsert(ex.Message);
	//ex.message;
	}
	}
	}

	

	响应类Model：

	
	#region 微信请求类 RequestXML
	/// <summary>
	/// 微信请求类
	/// </summary>
	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; }
	}
	}
	#endregion
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