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 namespace WebApplication1
11 {
12     public class URLRewiter : IHttpHandler
13     {
14         public URLRewiter()
15         {
16         // TODO: 在此处添加构造函数逻辑
17           }
18         public void ProcessRequest(HttpContext Context)
19         {
20             try
21             {
22                 //取得原始URL屏蔽掉参数
23                 string Url = Context.Request.RawUrl;
24                 //建立正则表达式
25                 System.Text.RegularExpressions.Regex Reg = new System.Text.RegularExpressions.Regex
26                 (@"/show-(\d+)\..+", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
27                 //用正则表达式进行匹配
28                 System.Text.RegularExpressions.Match m = Reg.Match(Url, Url.LastIndexOf("/"));//从最后一个“/”开始匹配
29                 if (m.Success)//匹配成功
30                 {
31                     String RealPath = @"~/aspx/show.aspx?type=" + m.Groups[1];
32                     Context.Server.Execute(RealPath);
33                 }
34                 else
35                 {
36                     Context.Response.Redirect(Context.Request.Url.ToString());
37                 }
38             }
39             catch
40             {
41                 Context.Response.Redirect(Context.Request.Url.ToString());
42             }
43         }
44
45         /// <summary>
46         /// 实现“IHttpHandler”接口所必须的成员
47         /// </summary>
48         /// <value></value>
49         /// Author:yoyo
50         /// blog:http://yangmingsheng.cn
51         public bool IsReusable
52         {
53             get { return false; }
54         }
55     }
56 }