URL重写之IHttpModule

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

namespace MyModule
{
    /// <summary>
    /// 重写接口Ihttpmodule
    /// </summary>
    public class MyModule:IHttpModule
    {
        public void Init(HttpApplication application)
        {
            application.BeginRequest+=new EventHandler(Application_BeginRequest);
            application.EndRequest+=new EventHandler(Application_EndRequest);
           
        }

        public void Dispose() { }

        private void Application_BeginRequest(Object source, EventArgs e)
        {
            #region 之前的简单测试
            //HttpApplication Application = (HttpApplication)source;
            //HttpRequest Request = Application.Context.Request;
            ////Application["test"] = (Request.AcceptTypes)[0];
            //HttpResponse Response = Application.Context.Response;
            ////foreach (string str in Request.AcceptTypes)
            ////{
            ////    Response.Write(str + "<br/>");
            ////}
            ////System.Web.HttpContext.Current.Server.Transfer("~/Headers.aspx", false);
            //string url = System.Web.HttpContext.Current.Server.MapPath("~/Headers.aspx");
            ////System.Web.HttpContext.Current.Server.Transfer("Heads.aspx");
            //Response.Write(Request.Url+Request.Url.Port.ToString());
            //Response.Write("<script>window.open('http://www.google.cn');</script>");
            //Response.Write(Request.ContentType+"时间为："+DateTime.Now.ToLongTimeString());
            //Response.Write("<h1>Beginning of Request</h1><hr>");
            #endregion

            string requestURL = HttpContext.Current.Request.Url.ToString();
            if (requestURL.IndexOf("do") != -1)
            {
                HttpContext.Current.Server.Transfer("Heads.aspx");
                HttpContext.Current.Response.Write("只是一个假地址!");
            }
            HttpContext.Current.Response.Write("只是一个真地址!");
        }
        private void Application_EndRequest(Object source, EventArgs e)
        {
            HttpApplication application = (HttpApplication)source;
            HttpResponse Response = application.Context.Response;
            Response.Write("<h1>End of Request</h1><hr>");
        }       

    }
}

web.config中应插入相应的语句：

在<system.webr>节点下：<httpModules>
      <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add name="MyModule" type="MyModule.MyModule" />
    </httpModules>