使用HttpModule实现网址重写

1. 修改配置文件：

 <httpModules>
        <</span>add name="html" type="HttpModule"/>
</httpModules>

2. 编写HttpModule类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

///URL重写  的摘要说明
///1.创建类文件 HttpModule.cs
///2.实现IHttpModule接口的方法

public class HttpModule : IHttpModule
{
        //清理资源
        public HttpModule(){}
 
        public void Dispose(){}
        ///
        /// 初始化
        ///
        ///
        public void Init(HttpApplication context)
        {
            //3.在初始化方法中添加事件处理方法
            context.BeginRequest += new EventHandler(BeginRequest);
            context.EndRequest += new EventHandler(EndRequest);
        }
 
        //4. 编写开始处理请求代码
 
        public void BeginRequest(object sender, EventArgs e)
        {
            HttpApplication app = sender as HttpApplication;
            //app.Response.Write("开始处理请求！");
            //4.1 截获请求网址
            string url = app.Request.RawUrl;
            //4.2 判断网址是否符合要求，判断是否进行重发到指定页面
            if (url.LastIndexOf(".html") > 0)
            {
                //转发到指定页面
                app.Server.Transfer("~/HttpMoudle/UrlReWrite.aspx");
            }
        }
 
        public void EndRequest(object sender, EventArgs e)
        {
            HttpApplication app = sender as HttpApplication;
            //app.Response.Write("结束处理请求！");
        }
    }