微信越來越火，微信公眾平臺成為開發成新寵，本文用C#.net開發微信公眾信號接口。
微信接口地址代碼:
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)) //請求處理
{
_wx.Handle(postStr);
}
}
else
{
_wx.Auth();
}
微信處理類：
public class weixin
{
private string Token = "weixin_token"; //換成自己的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)
{
//封裝請求類
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;
}
//回復消息
ResponseMsg(requestXML);
}
/// <summary>
/// 驗證微信簽名
/// </summary>
/// * 將token、timestamp、nonce三個參數進行字典序排序
/// * 將三個參數字符串拼接成一個字符串進行sha1加密
/// * 開發者獲得加密后的字符串可與signature對比，標識該請求來源于微信。
/// <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>
/// 回復消息(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")
{
//在這里執行一系列操作，從而實現自動回復內容.
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，我們知道您的位置啦。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，我們知道您的位置啦。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[親,我沒有看懂你的意思。您可以:" + mi.GetDefault() + "]]></Content><FuncFlag>1</FuncFlag></xml>";
//返回10以內條
//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條查詢的返回結果
//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[沈陽-黑龍江]]></Title><Description><![CDATA[元旦特價：￥300 市場價：￥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[親,我沒有看懂你的意思。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("異常：" + ex.Message + "Struck:" + ex.StackTrace.ToString());
wx_logs.MyInsert("異常：" + ex.Message + "Struck:" + ex.StackTrace.ToString());
}
}
/// <summary>
/// unix時間轉換為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轉換為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>
/// 調用百度地圖，返回坐標信息
/// </summary>
/// <param name="y">經度</param>
/// <param name="x">緯度</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為個人申請
res = webRequestPost(url, parame);
XmlDocument doc = new XmlDocument();
doc.LoadXml(res);
XmlElement rootElement = doc.DocumentElement;
string Status = rootElement.SelectSingleNode("status").InnerText;
if (Status == "OK")
{
//僅獲取城市
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異常:" + ex.Message.ToString() + "Struck:" + ex.StackTrace.ToString());
return "0";
}
return "0";
}
/// <summary>
/// Post 提交調用抓取
/// </summary>
/// <param name="url">提交地址</param>
/// <param name="param">參數</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())
{
//在這里對接收到的頁面內容進行處理
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;
}
}
}
//微信請求類
public class RequestXML
{
private string toUserName="";
/// <summary>
/// 消息接收方微信號，一般為公眾平臺賬號微信號
/// </summary>
public string ToUserName
{
get { return toUserName; }
set { toUserName = value; }
}
private string fromUserName = "";
/// <summary>
/// 消息發送方微信號
/// </summary>
public string FromUserName
{
get { return fromUserName; }
set { fromUserName = value; }
}
private string createTime = "";
/// <summary>
/// 創建時間
/// </summary>
public string CreateTime
{
get { return createTime; }
set { createTime = value; }
}
private string msgType = "";
/// <summary>
/// 信息類型 地理位置:location,文本消息:text,消息類型:image
/// </summary>
public string MsgType
{
get { return msgType; }
set { msgType = value; }
}
private string content = "";
/// <summary>
/// 信息內容
/// </summary>
public string Content
{
get { return content; }
set { content = value; }
}
private string location_X = "";
/// <summary>
/// 地理位置緯度
/// </summary>
public string Location_X
{
get { return location_X; }
set { location_X = value; }
}
private string location_Y = "";
/// <summary>
/// 地理位置經度
/// </summary>
public string Location_Y
{
get { return location_Y; }
set { location_Y = value; }
}
private string scale = "";
/// <summary>
/// 地圖縮放大小
/// </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>
/// 圖片鏈接，開發者可以用HTTP GET獲取
/// </summary>
public string PicUrl
{
get { return picUrl; }
set { picUrl = value; }
}
}
說明： 其中用到的mijiya類，主要是調用數據庫進行關鍵詞匹配自動回復內容，可以根據自己的業務情況編寫。
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