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://jx270.cnblogs.com/ 实际上是 http://www.cnblogs.com/jx270 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>
<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:
http://localhost/UrlRewritingTest/stock600616.aspx = http://localhost/UrlRewritingTest/stockinfo.aspx?code=600616