有关于URL的重写，本文也只是拿来主意。相继有MS的组件“URLRewriter”和在Global.asax里的“Application_BeginRequest()”编码方式，以及IIS里的ISAPI设置。

娜列下来，实现方法也都很简单。

方法一：MS组件

这里也不用详解了，相关请看：

http://www.microsoft.com/china/msdn/library/webservices/asp.net/URLRewriting.mspx

用法很简单，只需要把组件URLRewriter.dll拷到应用程序的bin目录下，然后在web.config下加入如下代码：

在<configuration></configuration>中加入：

<configSections>

<section name="RewriterConfig" type="URLRewriter.Config.RewriterConfigSerializerSectionHandler, URLRewriter" />

</configSections>

<RewriterConfig>

<Rules>

<RewriterRule>

<LookFor>~/(\d{4})/(\d{2})/Default\.aspx</LookFor>

<SendTo>~/Default.aspx?ID=$1</SendTo>

</RewriterRule>

</Rules>

</RewriterConfig>

然后在<system.web></system.web>中加入：

<httpHandlers>

<add verb="*" path="*.aspx"

type="URLRewriter.RewriterFactoryHandler, URLRewriter" />

</httpHandlers>

最后在地址栏上键入：http://localhost/Test/2004/12/News.aspx

效果出来了。

上面的<LookFor>~/(\d{4})/(\d{2})/News\.aspx</LookFor>这句这正则表达式URL，即被重写的URL，而<SendTo>~/Default.aspx?ID=$1</SendTo>这一句为原始URL地址。其中的$1为第一个正则表达式值（上面例子为：2004），以此类推，第二个即为$2

方法二：Application_BeginRequest()

在应用程序中新建一个XML文件，文件内容为：文件名ReWriter.config

<?xml version="1.0" encoding="utf-8" ?>

<ReWriterUrls>

<rule>

<old>(.*)/News/(\d{4})/Default\.aspx</old>

<new>../../Default.aspx?id=$2&type=$3</new>

</rule>

</ReWriterUrls>

在Global.asax文件中的Application_BeginRequest(Object sender, EventArgs e)加入代码：

try

{

string path=Server.MapPath("~/ReWriter.config");

XPathDo***ent myXPathDo***ent = new XPathDo***ent(path);

XPathNavigator myXPathNavigator = myXPathDo***ent.CreateNavigator();

XPathNodeIterator myXPathNodeIterator = myXPathNavigator.Select ("//rule");

System.Text.RegularExpressions.Regex oReg;

string ReWriteUrl;

while (myXPathNodeIterator.MoveNext())

{

//oReg=new Regex(oNode.SelectSingleNode("url/text()").Value);

XPathNavigator nav2 = myXPathNodeIterator.Current.Clone();

string oldString="",newString="";

XPathNodeIterator it2 = nav2.Select("old");

while(it2.MoveNext())

{

oldString = it2.Current.Value;

break

}

it2 = nav2.Select("new");

while(it2.MoveNext())

{

newString = it2.Current.Value;

break

}

if(oldString != "" && newString != "")

{

oReg = new System.Text.RegularExpressions.Regex(oldString);

if(oReg.IsMatch(Request.Url.ToString()))

{

ReWriteUrl = oReg.Replace(Request.Url.ToString(),newString);

HttpContext.Current.RewritePath(ReWriteUrl);

break

}

}

}

}

catch

{