有關于url的重寫，本文也只是拿來主意。相繼有ms的組件“urlrewriter”和在global.asax里的“application_beginrequest()”編碼方式，以及iis里的isapi設置。

娜列下來，實現方法也都很簡單。

方法一：ms組件

這里也不用詳解了，相關請看：

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

用法很簡單，只需要把組件urlrewriter.dll拷到應用程序的bin目錄下，然后在web.config下加入如下代碼：

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>

最后在地址欄上鍵入：http://localhost/test/2004/12/news.aspx

效果出來了。

上面的<lookfor>~/(/d{4})/(/d{2})/news/.aspx</lookfor>這句這正則表達式url，即被重寫的url，而<sendto>~/default.aspx?id=$1</sendto>這一句為原始url地址。其中的$1為第一個正則表達式值（上面例子為：2004），以此類推，第二個即為$2

方法二：application_beginrequest()

在應用程序中新建一個xml文件，文件內容為：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&amp;type=$3</new>

</rule>

</rewriterurls>

在global.asax文件中的application_beginrequest(object sender, eventargs e)加入代碼：

try

{

string path=server.mappath("~/rewriter.config");

xpathdo***ent myxpathdo***ent = new xpathdo***ent(path);

xpathnavigator myxpathnavigator = myxpathdo***ent.createnavigator();

xpathnodeiterator myxpathnodeiterator = myxpathnavigator.select ("http://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

{