1 using System;
 2 using System.Collections.Generic;
 3 using System.Text;
 4 using System.Net;
 5 using System.IO;
 6 using System.Threading;
 7 
 8 
 9 namespace Omd
10 {
11     public static class Attendendance
12     {
13         public static int CheckIn(UserInfo info)
14         {
15             Stream outstream = null;
16             Stream instream = null;
17             StreamReader sr = null;
18             HttpWebResponse response = null;
19             HttpWebRequest request = null;
20             string content = null;
21             Encoding encoding = Encoding.UTF8;
22             byte[] data = encoding.GetBytes(info.PostInfo);
23             try
24             {
25                 // 设置参数
26                 request = (HttpWebRequest)WebRequest.Create(info.Oaip);
27                 CookieContainer cookieContainer = new CookieContainer();
28                 request.CookieContainer = cookieContainer;
29                 request.AllowAutoRedirect = true;
30                 request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2";
31                 request.Method = "POST";
32                 request.ContentType = "text/plain; charset=UTF-8";
33                 request.ContentLength = data.Length;
34 
35                 outstream = request.GetRequestStream();
36                 outstream.Write(data, 0, data.Length);
37                 outstream.Close();
38 
39                 //发送请求并获取相应回应数据
40                 response = (HttpWebResponse)request.GetResponse();
41 
42                 //直到request.GetResponse()程序才开始向目标网页发送Post请求
43                 instream = response.GetResponseStream();
44                 sr = new StreamReader(instream, encoding);
45 
46                 //返回结果网页
47                 content = sr.ReadToEnd();
48                 if (content.Length > 0)
49                 {
50                     return 1;
51                 }
52                 else { return 0; }
53             }
54             catch { return 0; }
55         }
56         public static string GetViewState(UserInfo info)
57         {
58             string URI = info.Oaip;
59             HttpWebRequest request = WebRequest.Create(URI) as HttpWebRequest;
60             request.Method = "POST";
61             request.KeepAlive = false;
62 
63             //// 接收返回的页面
64             HttpWebResponse response = request.GetResponse() as HttpWebResponse;
65             System.IO.Stream responseStream = response.GetResponseStream();
66             System.IO.StreamReader reader = new System.IO.StreamReader(responseStream, Encoding.UTF8);
67             string srcString = reader.ReadToEnd();
68 
69             //// 获取页面的 VeiwState                
70             string viewStateFlag = "id=\"__VIEWSTATE\" value=\"";
71             int i = srcString.IndexOf(viewStateFlag) + viewStateFlag.Length;
72             int j = srcString.IndexOf("\"", i);
73             string viewState = srcString.Substring(i, j - i);
74 
75             //// 获取页面的 EventValidation                
76             string eventValidationFlag = "id=\"__EVENTVALIDATION\" value=\"";
77             i = srcString.IndexOf(eventValidationFlag) + eventValidationFlag.Length;
78             j = srcString.IndexOf("\"", i);
79             string eventValidation = srcString.Substring(i, j - i);
80 
81             // 将文本转换成 URL 编码字符串
82             viewState = System.Uri.EscapeDataString(viewState);
83             eventValidation = System.Uri.EscapeDataString(eventValidation);
84             string btn = System.Uri.EscapeDataString("下班签到");
85             string formatString =
86                      "ctl00$ContentPlaceHolder1$ASPxRoundPanel1$SubC2={0}&__VIEWSTATE={1}&__EVENTVALIDATION={2}";
87             string postString =
88                      string.Format(formatString, btn, viewState, eventValidation);
89 
90             // 返回提交的字符串
91             return postString;
92          
93 
94         }
95     }
96 }