C# 获取源代码

1 using System;
2 using System.Data;
3 using System.Configuration;
4 using System.Web;
5 using System.Web.Security;
6 using System.Web.UI;
7 using System.Web.UI.WebControls;
8 using System.Web.UI.WebControls.WebParts;
9 using System.Web.UI.HtmlControls;
10 using System.Net;
11 using System.Text;
12 using System.IO;
13
14 public partial class _Default : System.Web.UI.Page
15 {
16 /// <summary>
17 /// 塗聚文
18 /// 涂聚文
19 /// </summary>
20 /// <param name="sender"></param>
21 /// <param name="e"></param>
22 protected void Page_Load( object sender, EventArgs e)
23 {
24 // 获取URL地址
25 string url = Request.Url.ToString();
26 txtUrl.Text = url;
27 // 获取IP地址
28 string ips = Request.UserHostAddress.ToString();
29 txtIp.Text = ips;
30 // 浏览器
31 string fr = Request.Browser.Type.ToString();
32 txtbrows.Text = fr;
33 string cp ; // = Request.UserAgent.ToString()
34 // 操作系统
35 cp = GetOSNameByUserAgent(Request.UserAgent.ToString());
36 txtcp.Text = cp;
37 // 浏览器版本号
38 // this.txtbrows.Text = Request.Browser.ClrVersion.ToString();
39 // txtUrl.Text = Request.ServerVariables["http_referer"];
40 }
41
42 protected void btnGet_Click( object sender, EventArgs e)
43 {
44 txtUrl.Text = Request.ServerVariables[ " http_referer " ]; // ServerViables["http_referer"];
45 string strurl = txtUrl.Text.ToString(); // 欲获取的网页地址 要 http: //
46 WebClient myWebClient = new WebClient(); // 创建WebClient实例myWebClient
47
48 // 获取或设置用于对向 Internet 资源的请求进行身份验证的网络凭据。
49 myWebClient.Credentials = CredentialCache.DefaultCredentials;
50 // Request.ServerVariables("HTTP_HOST");
51 // 从资源下载数据并返回字节数组。（加@是因为网址中间有"/"符号）
52 byte [] pagedata = myWebClient.DownloadData(@strurl);
53
54 string result = Encoding.Default.GetString(pagedata); // 如果获取网站页面采用的是GB2312，则使用这句
55 // string result = Encoding.UTF8.GetString(pagedata); // 如果获取网站页面采用的是UTF-8，则使用这句
56 Response.Write(result); // 在WEB页中显示获取的内容
57 Panel1.Visible = false ;
58
59 }
60 /// <summary>
61 /// 根据 User Agent 获取操作系统名称
62 /// </summary>
63 private string GetOSNameByUserAgent( string userAgent)
64 {
65 string osVersion = " 未知 " ;
66 if (userAgent.Contains( " NT 6.2 " ))
67 {
68 osVersion = " Windows 8/Windows Server 2012 " ;
69 }
70 else if (userAgent.Contains( " NT 6.1 " ))
71 {
72 osVersion = " Windows 7/Windows Server 2008 R2 " ;
73 }
74 else if (userAgent.Contains( " NT 6.0 " ))
75 {
76 osVersion = " Windows Vista/Server 2008 " ;
77 }
78 else if (userAgent.Contains( " NT 5.2 " ))
79 {
80 osVersion = " Windows Server 2003 " ;
81 }
82 else if (userAgent.Contains( " NT 5.1 " ))
83 {
84 osVersion = " Windows XP " ;
85 }
86 else if (userAgent.Contains( " NT 5 " ))
87 {
88 osVersion = " Windows 2000 " ;
89 }
90 else if (userAgent.Contains( " NT 4 " ))
91 {
92 osVersion = " Windows NT4 " ;
93 }
94 else if (userAgent.Contains( " Me " ))
95 {
96 osVersion = " Windows Me " ;
97 }
98 else if (userAgent.Contains( " 98 " ))
99 {
100 osVersion = " Windows 98 " ;
101 }
102 else if (userAgent.Contains( " 95 " ))
103 {
104 osVersion = " Windows 95 " ;
105 }
106 else if (userAgent.Contains( " Mac " ))
107 {
108 osVersion = " Mac " ;
109 }
110 else if (userAgent.Contains( " Unix " ))
111 {
112 osVersion = " UNIX " ;
113 }
114 else if (userAgent.Contains( " Linux " ))
115 {
116 osVersion = " Linux " ;
117 }
118 else if (userAgent.Contains( " SunOS " ))
119 {
120 osVersion = " SunOS " ;
121 }
122 return osVersion;
123 }
124 /// <summary>
125
126 /// 获取源代码
127
128 /// </summary>
129
130 /// <param name="url"></param>
131
132 /// <param name="encoding"></param>
133
134 /// <returns></returns>
135
136 public static string GetPage( string url, Encoding encoding)
137 {
138
139 HttpWebRequest request = null ;
140
141 HttpWebResponse response = null ;
142
143 StreamReader reader = null ;
144
145 try
146 {
147
148 request = (HttpWebRequest)WebRequest.Create(url);
149
150 request.UserAgent = " www.dupcit.com " ;
151
152 request.Timeout = 20000 ;
153
154 request.AllowAutoRedirect = false ;
155
156
157
158 response = (HttpWebResponse)request.GetResponse();
159
160 if (response.StatusCode == HttpStatusCode.OK && response.ContentLength < 1024 * 1024 )
161 {
162
163 reader = new StreamReader(response.GetResponseStream(), encoding);
164
165 string html = reader.ReadToEnd();
166
167
168
169 return html;
170
171 }
172
173 }
174
175 catch
176 {
177
178 }
179
180 finally
181 {
182
183
184
185 if (response != null )
186 {
187
188 response.Close();
189
190 response = null ;
191
192 }
193
194 if (reader != null )
195
196 reader.Close();
197
198
199
200 if (request != null )
201
202 request = null ;
203
204
205
206 }
207
208
209
210 return string .Empty;
211
212 }
213 }