.NET下URL重写及PostBack处理

最新推荐文章于 2025-09-09 16:53:48 发布

转载最新推荐文章于 2025-09-09 16:53:48 发布 · 60 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/hejunrex/archive/2009/12/29/1635172.html

文章标签：

#ui

本文详细介绍了URL重写技术的应用及配置方法，包括如何通过URLRewriter.dll进行URL重写，处理PostBack回发问题，以及在IIS7.0中的配置方式。此外，还提供了针对HTML页面重写的解决方案。

URL重写是截取传入Web 请求并自动将请求重定向到其他 URL 的过程。

比如:浏览器发来请求 http://localhost:90/URLRewriter/1.html ，

服务器自动将这个请求中定向为http://localhost:90/URLRewriter/url.aspx?id=1

URLRewriter下载编译后提取其中的URLRewriter.dll和ActionlessForm.dll

一、URL重写

项目引用URLRewriter.dll

web.config配置：

代码

<? xml version="1.0" ?>
< configuration xmlns ="http://schemas.microsoft.com/.NetConfiguration/v2.0" >
< configSections >
     < section name ="RewriterConfig" type ="URLRewriter.Config.RewriterConfigSerializerSectionHandler, URLRewriter" />
   </ configSections >

   < RewriterConfig >
     < Rules >
       < RewriterRule >
         < LookFor > ~/URLRewriter/(.[0-9]*)\.html </ LookFor >
         < SendTo > ~/URLRewriter/url.aspx?id=$1 </ SendTo >
       </ RewriterRule >
       < RewriterRule >
         < LookFor > ~/web </ LookFor >
         < SendTo > ~/URLRewriter/url.aspx </ SendTo >
       </ RewriterRule >
     </ Rules >
   </ RewriterConfig >

   < system.web >
     < httpHandlers >
       
       
       
     </ httpHandlers >

     < httpModules >
       
       < add type ="URLRewriter.ModuleRewriter, URLRewriter" name ="ModuleRewriter" />
       
     </ httpModules >
   </ system.web >

</ configuration >

IIS配置：

网站--属性--主目录--配置--插入--C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll

将文件是否存在勾去掉

二、处理PostBack回发

ActionlessForm.dll以重写Form的方式用于处理PostBack回发后URL变为原始地址

项目引用ActionlessForm.dll在页面中注册一下

<%@ Register TagPrefix="skm" Namespace="ActionlessForm" Assembly="ActionlessForm" %>

将页面中的<form runat="server"></form>替换成:<skm:form id="form1" runat="server"></skm:form>

注：以这种方式处理回发将会在设计器中查看的时候为错误提示Form不可用

所以采用以下方法处理：

在微软的URLRewriter类库中添加以下类之后编译

代码

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

/// <summary>
/// FormRewriter 的摘要说明
/// </summary>
namespace URLRewriter.Form
{
     public class FormRewriterControlAdapter : System.Web.UI.Adapters.ControlAdapter
    {
         public FormRewriterControlAdapter()
        {
        }

         protected override void Render(HtmlTextWriter writer)
        {
             base .Render( new RewriteFormHtmlTextWriter(writer));
        }
    }

     public class RewriteFormHtmlTextWriter : HtmlTextWriter
    {
         public RewriteFormHtmlTextWriter(HtmlTextWriter writer)
            : base (writer)
        {
             base .InnerWriter = writer.InnerWriter;
        }
         public RewriteFormHtmlTextWriter(System.IO.TextWriter writer)
            : base (writer)
        {
             base .InnerWriter = writer;
        }

         public override void WriteAttribute( string name, string value, bool fEncode)
        {
             // If the attribute we are writing is the "action" attribute, and we are not on a sub-control,
             // then replace the value to write with the raw URL of the request - which ensures that we'll
             // preserve the PathInfo value on postback scenarios
             if (name == " action " )
            {
                HttpContext context = HttpContext.Current;
                 if (context.Items[ " ActionAlreadyWritten " ] == null )
                {
                     // We will use the Request.RawUrl property within ASP.NET to retrieve the origional
                     // URL before it was re-written.
                    value = context.Request.RawUrl;
                     // Indicate that we've already rewritten the <form>'s action attribute to prevent
                     // us from rewriting a sub-control under the <form> control
                    context.Items[ " ActionAlreadyWritten " ] = true ;
                }
            }
             base .WriteAttribute(name, value, fEncode);
        }
    }

}

在App_Browsers文件夹下创建Form.browser

代码

< browsers >
   < browser refID ="Default" >
     < controlAdapters >
       < adapter controlType ="System.Web.UI.HtmlControls.HtmlForm"
               adapterType ="URLRewriter.Form.FormRewriterControlAdapter" />
     </ controlAdapters >
   </ browser >
</ browsers >

这样就不需要引用ActionlessForm.dll也不需要改变Form了，只要引用URLRewriter.dll就可以了

三、在处理重写成html的时候本来网站中的html页面将会不能使用

使用以上方式将不存在找个问题

如果还不行可以在<compilation debug="true">节点下添加

在<httpHandlers>节点下添加（如果之前使用的是http处理程序执行重写的，请写在前面）

以下为IIS7.0配置方式

IIS7不再使用URLRewriter.dll组件了，请使用IIS7的URLWRITER，下载rewrite_2.0_rtw并进行安装，配置

转载于:https://www.cnblogs.com/hejunrex/archive/2009/12/29/1635172.html