在ASP.Net2.0中使用UrlRewritingNet实现链接重写

很多时候我们需要链接转向(Url Rewriting)，例如二级域名转向、文章访问链接等场合。

让我们看两个例子：

1 你现在看到的当前作者的博客园的域名：
http://heekui.cnblogs.com 实际上是 http://www.cnblogs.com/heekui 的一种链接重写(Url Rewriting)。

2 codeproject上的文章，我们获取的地址都是以文章主要关键字做的网页名称： http://www.codeproject.com/cs/webservices/wsdlparser.asp 个人觉得实际的文章链接可能是如下格式（纯属猜想） http://www.codeproject.com/news.asp?id=123456
那么如何在Asp.net2.0中如何实现链接重写呢？
可以采用UrlRewritingNet.UrlRewriter.dll来轻松实现
UrlRewritingNet.UrlRewriter.dll 可从其官方网站下载：http://www.urlrewriting.net

我们要做的就是进行Web.Config文件的设置

0 设置之前需要添加引用:UrlRewritingNet.UrlRewriter.dll
1 <configSections>间添加：
<configSections>
<section name="urlrewritingnet" restartOnExternalChanges="true" requirePermission="false" type="UrlRewritingNet.Configuration.UrlRewriteSection, UrlRewritingNet.UrlRewriter"/>
</configSections>
2 添加httpModules
<httpModules>
<add name="UrlRewriteModule" type="UrlRewritingNet.Web.UrlRewriteModule, UrlRewritingNet.UrlRewriter"/>
</httpModules>
3 添加链接重写的设置
<urlrewritingnet rewriteOnlyVirtualUrls="true" contextItemsPrefix="QueryString" defaultPage="default.aspx" defaultProvider="RegEx" xmlns="http://www.urlrewriting.net/schemas/config/2006/07">
<rewrites>
<add name="Rewrite1" virtualUrl="^http/://(.*)/UrlRewritingTest/test.aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/default.aspx" rewrite="Domain" ignoreCase="true"/>
<add name="Rewrite2" virtualUrl="^http/://(.*)/UrlRewritingTest/test1.aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/info.aspx?year=2007&month=3&day=9" rewrite="Domain" ignoreCase="true"/>
</rewrites>
</urlrewritingnet>

完整的一个Web.Config文件


<?xml version="1.0"?>


<configuration>


<configSections>


<section name="urlrewritingnet" restartOnExternalChanges="true" requirePermission="false" type="UrlRewritingNet.Configuration.UrlRewriteSection, UrlRewritingNet.UrlRewriter"/>


</configSections>


<urlrewritingnet rewriteOnlyVirtualUrls="true" contextItemsPrefix="QueryString" defaultPage="default.aspx" defaultProvider="RegEx" xmlns="http://www.urlrewriting.net/schemas/config/2006/07">


<rewrites>


<add name="Rewrite1" virtualUrl="^http/://(.*)/UrlRewritingTest/test.aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/default.aspx" rewrite="Domain" ignoreCase="true"/>


<add name="Rewrite2" virtualUrl="^http/://(.*)/UrlRewritingTest/test1.aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/info.aspx?year=2007&month=3&day=9" rewrite="Domain" ignoreCase="true"/>


<add name="Rewrite3" virtualUrl="^http/://(.*)/UrlRewritingTest/test(/d{4})(/d{2})(/d{2}).aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/info.aspx?year=$2&month=$3&day=$4" rewrite="Domain" ignoreCase="true"/>


<add name="Rewrite4" virtualUrl="^http/://(.*)/UrlRewritingTest/(/d{4})/(/d{2})/(/d{2})/info.aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/info.aspx?year=$2&month=$3&day=$4" rewrite="Domain" ignoreCase="true"/>


<add name="Rewrite5" virtualUrl="^http/://(.*)/UrlRewritingTest/stock(/d{6}).aspx" rewriteUrlParameter="ExcludeFromClientQueryString" destinationUrl="~/stockinfo.aspx?code=$2" rewrite="Domain" ignoreCase="true"/>


</rewrites>


</urlrewritingnet>


<appSettings/>


<system.web>


<httpModules>


<add name="UrlRewriteModule" type="UrlRewritingNet.Web.UrlRewriteModule, UrlRewritingNet.UrlRewriter"/>


</httpModules>


<compilation debug="true"/>


</system.web>


</configuration>



示例程序
我们做了一个按查询字符串的输入显示对应日期的页面info.aspx


protected void Page_Load(object sender, EventArgs e)






{


string strYear = Request.QueryString["year"].ToString();


string strMonth = Request.QueryString["month"].ToString();


string strDay = Request.QueryString["day"].ToString();




Response.Write(string.Format("你输入的日期是{0}年{1}月{2}日",strYear,strMonth,strDay));


}

常规访问方式：http://localhost/UrlRewritingTest/info.aspx?year=2007&month=03&day=08



页面重写方式1：http://localhost/UrlRewritingTest/test20070308.aspx



页面重写方式2：http://localhost/UrlRewritingTest/2007/03/08/info.aspx



大家可以看到实际的访问效果是一致的。

示例文件中还有一个股票信息查看的例子：