微信公共账号代码（简单版）

  1 using System;
  2 using System.IO;
  3 using System.Text;
  4 using System.Web;
  5 using System.Web.Security;
  6 using System.Xml;
  7 
  8 namespace WebWeiXin
  9 {
 10     public partial class weixinmsgread : System.Web.UI.Page
 11     {
 12 
 13         const string Token = "king";        //与那边填写的token一致
 14         protected void Page_Load(object sender, EventArgs e)
 15         {
 16             string postStr = "";
 17             if (Request.HttpMethod.ToLower() == "post")
 18             {
 19                 Stream s = HttpContext.Current.Request.InputStream;
 20                 byte[] b = new byte[s.Length];
 21                 s.Read(b, 0, (int)s.Length);
 22                 postStr = Encoding.UTF8.GetString(b);
 23                 WriteTxt(postStr);
 24 
 25                 if (!string.IsNullOrEmpty(postStr))
 26                 {
 27                     try
 28                     {
 29 
 30 
 31                         //封装请求类  
 32                         XmlDocument doc = new XmlDocument();
 33                         doc.LoadXml(postStr);
 34                         XmlElement rootElement = doc.DocumentElement;
 35 
 36                         XmlNode MsgType = rootElement.SelectSingleNode("MsgType");
 37 
 38                         RequestXML requestXML = new RequestXML();
 39                         requestXML.ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText;
 40                         requestXML.FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText;
 41                         requestXML.CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText;
 42                         requestXML.MsgType = MsgType.InnerText;
 43 
 44                         if (requestXML.MsgType == "text")
 45                         {
 46                             requestXML.Content = rootElement.SelectSingleNode("Content").InnerText;
 47                         }
 48                         else if (requestXML.MsgType == "location")
 49                         {
 50                             requestXML.Location_X = rootElement.SelectSingleNode("Location_X").InnerText;
 51                             requestXML.Location_Y = rootElement.SelectSingleNode("Location_Y").InnerText;
 52                             requestXML.Scale = rootElement.SelectSingleNode("Scale").InnerText;
 53                             requestXML.Label = rootElement.SelectSingleNode("Label").InnerText;
 54                         }
 55                         else if (requestXML.MsgType == "image")
 56                         {
 57                             requestXML.PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText;
 58                         }
 59 
 60                         PrintMsg(requestXML);
 61                     }
 62                     catch (Exception ex)
 63                     {
 64                         WriteTxt(ex + "");
 65                         //throw;
 66                     }
 67                 }
 68             }
 69             else
 70             {
 71                 Valid();
 72             }
 73         }
 74 
 75         private void PrintMsg(RequestXML requestXML)
 76         {
 77             string resMsg;
 78             string resxml;
 79             switch (requestXML.MsgType)
 80             {
 81                 case "text":
 82                     resMsg = "您输入的是：" + requestXML.Content;
 83                     break;
 84                 case "location":
 85                     resMsg = "您输入的是：" + requestXML.Location_X + "," + requestXML.Location_Y;
 86                     break;
 87                 case "image":
 88                     resMsg = "您输入的是：" + requestXML.PicUrl;
 89                     break;
 90                 default:
 91                     resMsg = "<![CDATA[正在建设中，稍等时日，更多精彩……]]>";
 92                     break;
 93             }
 94 
 95             resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" +
 96                      requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) +
 97                      "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content>"
 98                      + resMsg
 99                      + "</Content><FuncFlag>0</FuncFlag></xml>";
100             WriteTxt(resxml);
101             Response.Write(resxml);
102         }
103 
104         /// <summary>
105         /// 验证微信签名
106         /// </summary>
107         /// * 将token、timestamp、nonce三个参数进行字典序排序
108         /// * 将三个参数字符串拼接成一个字符串进行sha1加密
109         /// * 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。
110         /// <returns></returns>
111         private bool CheckSignature()
112         {
113             string signature = Request.QueryString["signature"];
114             string timestamp = Request.QueryString["timestamp"];
115             string nonce = Request.QueryString["nonce"];
116             string[] ArrTmp = { Token, timestamp, nonce };
117             Array.Sort(ArrTmp);     //字典排序
118             string tmpStr = string.Join("", ArrTmp);
119             tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
120             tmpStr = tmpStr.ToLower();
121 
122             if (tmpStr == signature)
123             {
124                 return true;
125             }
126             else
127             {
128                 return false;
129             }
130         }
131 
132         private void Valid()
133         {
134             string echoStr = Request.QueryString["echoStr"];
135             if (CheckSignature())
136             {
137                 if (!string.IsNullOrEmpty(echoStr))
138                 {
139                     Response.Write(echoStr);
140                     Response.End();
141                 }
142             }
143         }
144 
145 
146 
147         /// <summary>
148         /// unix时间转换为datetime
149         /// </summary>
150         /// <param name="timeStamp"></param>
151         /// <returns></returns>
152         private DateTime UnixTimeToTime(string timeStamp)
153         {
154             DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
155             long lTime = long.Parse(timeStamp + "0000000");
156             TimeSpan toNow = new TimeSpan(lTime);
157             return dtStart.Add(toNow);
158         }
159 
160         /// <summary>
161         /// datetime转换为unixtime
162         /// </summary>
163         /// <param name="time"></param>
164         /// <returns></returns>
165         private int ConvertDateTimeInt(System.DateTime time)
166         {
167             System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
168             return (int)(time - startTime).TotalSeconds;
169         }
170 
171         /// <summary>
172         /// 记录bug，以便调试
173         /// </summary>
174         /// <returns></returns>
175         public bool WriteTxt(string str)
176         {
177             try
178             {
179                 FileStream fs = new FileStream(Server.MapPath("/bugLog.txt"), FileMode.Append);
180                 StreamWriter sw = new StreamWriter(fs);
181                 //开始写入
182                 sw.WriteLine(str);
183                 //清空缓冲区
184                 sw.Flush();
185                 //关闭流
186                 sw.Close();
187                 fs.Close();
188             }
189             catch (Exception)
190             {
191                 return false;
192             }
193             return true;
194         }
195 
196 
197 
198 
199 
200 
201     }
202 
203     //微信请求类
204     public class RequestXML
205     {
206         private string toUserName;
207         /// <summary>
208         /// 消息接收方微信号，一般为公众平台账号微信号
209         /// </summary>
210         public string ToUserName
211         {
212             get { return toUserName; }
213             set { toUserName = value; }
214         }
215 
216         private string fromUserName;
217         /// <summary>
218         /// 消息发送方微信号
219         /// </summary>
220         public string FromUserName
221         {
222             get { return fromUserName; }
223             set { fromUserName = value; }
224         }
225 
226         private string createTime;
227         /// <summary>
228         /// 创建时间
229         /// </summary>
230         public string CreateTime
231         {
232             get { return createTime; }
233             set { createTime = value; }
234         }
235 
236         private string msgType;
237         /// <summary>
238         /// 信息类型 地理位置:location,文本消息:text,消息类型:image
239         /// </summary>
240         public string MsgType
241         {
242             get { return msgType; }
243             set { msgType = value; }
244         }
245 
246         private string content;
247         /// <summary>
248         /// 信息内容
249         /// </summary>
250         public string Content
251         {
252             get { return content; }
253             set { content = value; }
254         }
255 
256         private string location_X;
257         /// <summary>
258         /// 地理位置纬度
259         /// </summary>
260         public string Location_X
261         {
262             get { return location_X; }
263             set { location_X = value; }
264         }
265 
266         private string location_Y;
267         /// <summary>
268         /// 地理位置经度
269         /// </summary>
270         public string Location_Y
271         {
272             get { return location_Y; }
273             set { location_Y = value; }
274         }
275 
276         private string scale;
277         /// <summary>
278         /// 地图缩放大小
279         /// </summary>
280         public string Scale
281         {
282             get { return scale; }
283             set { scale = value; }
284         }
285 
286         private string label;
287         /// <summary>
288         /// 地理位置信息
289         /// </summary>
290         public string Label
291         {
292             get { return label; }
293             set { label = value; }
294         }
295 
296         private string picUrl;
297         /// <summary>
298         /// 图片链接，开发者可以用HTTP GET获取
299         /// </summary>
300         public string PicUrl
301         {
302             get { return picUrl; }
303             set { picUrl = value; }
304         }
305     }
306 }
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