我用的开发框架是Struts2，使用urlrewrite的步骤是先引入相关的包，
然后在web.xml中使用如下配置.

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <!-- 这是UrlRewrite的配置 -->
        <filter>
        <filter-name>UrlRewriteFilter</filter-name>
        <filter-class>
            org.tuckey.web.filters.urlrewrite.UrlRewriteFilter
        </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>UrlRewriteFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
        <!--结束-->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>
            org.apache.struts2.dispatcher.FilterDispatcher
        </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
                <!--重要-->
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

下面是urlrewrite.xml配置。

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 3.2//EN"
        "http://tuckey.org/res/dtds/urlrewrite3.2.dtd">

<!--

    Configuration file for UrlRewriteFilter
    http://tuckey.org/urlrewrite/

-->
<urlrewrite>
   <!--以index为例-->
    <rule>
        <from>/index</from><!-- 地址栏里会显示http://localhost:8080/工程名/index -->
        <to>/index.action</to><!-- 实际调用的是index.action -->
    </rule>
    <rule>
        <from>/admin</from>
        <to>/blog/admin.jsp</to><!--实际访问的为admin.jsp-->
    </rule>
    <!--网址中有变量的时候-->
    <rule>
        <from>/index/([\s\S]*)$</from><!--以$代替变量，变量支持正则表达式-->
        <to>/index.action?param=$1</to><!--用$1调用变量-->
    </rule>
    <!--网址中有多个变量的时候-->
    <rule>
        <from>/essay/([\s\S]*)/([\s\S]*)$</from><!--多个变量用‘/’分割-->
        <to>/main.action?date=$1&id=$2</to><!--变量与变量之间用‘&’连接，重要-->
    </rule>
    <!--以下不用管-->
    <outbound-rule>
        <from>/rewrite-status</from>
        <to>/test/status/</to>
    </outbound-rule>

</urlrewrite>

希望对你有帮助.