NET下URL重写及PostBack处理

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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：

<?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

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

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）