SiteMesh实战

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更多详细使用方法，可以查看demo
需要到http://www.opensymphony.com/sitemesh/下载Jar及demo(取其中的两个tld以及sitemesh.xml)
web.xml：

<?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">    <filter>        <filter-name>sitemesh</filter-name>        <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>sitemesh</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>    <jsp-config>        <taglib>            <taglib-uri>sitemesh-page</taglib-uri>            <taglib-location>/WEB-INF/sitemesh-page.tld</taglib-location>        </taglib>        <taglib>            <taglib-uri>sitemesh-decorator</taglib-uri>            <taglib-location>/WEB-INF/sitemesh-decorator.tld</taglib-location>        </taglib>    </jsp-config>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

sitemesh.xml：

<sitemesh>    <property name="decorators-file" value="/WEB-INF/decorators.xml"/>    <excludes file="${decorators-file}"/>    <page-parsers>        <parser content-type="text/html" class="com.opensymphony.module.sitemesh.parser.HTMLPageParser" />    </page-parsers>    <decorator-mappers>        <mapper class="com.opensymphony.module.sitemesh.mapper.PageDecoratorMapper">            <param name="property.1" value="meta.decorator" />            <param name="property.2" value="decorator" />        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.FrameSetDecoratorMapper">        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.AgentDecoratorMapper">            <param name="match.MSIE" value="ie" />            <param name="match.Mozilla [" value="ns" />            <param name="match.Opera" value="opera" />            <param name="match.Lynx" value="lynx" />        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.PrintableDecoratorMapper">            <param name="decorator" value="printable" />            <param name="parameter.name" value="printable" />            <param name="parameter.value" value="true" />        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.RobotDecoratorMapper">            <param name="decorator" value="robot" />        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.ParameterDecoratorMapper">            <param name="decorator.parameter" value="decorator" />            <param name="parameter.name" value="confirm" />            <param name="parameter.value" value="true" />        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.FileDecoratorMapper">        </mapper>        <mapper class="com.opensymphony.module.sitemesh.mapper.ConfigDecoratorMapper">            <param name="config" value="${decorators-file}" />        </mapper>    </decorator-mappers></sitemesh>

decorators.xml：

<?xml version="1.0" encoding="utf-8"?><decorators defaultdir="/decorators">    <!-- Any urls that are excluded will never be decorated by Sitemesh -->    <excludes>        <pattern>/index.jsp*</pattern>          <pattern>/login/*</pattern>    </excludes>    <decorator name="main" page="main.jsp">        <pattern>/*</pattern>    </decorator></decorators>

main.jsp：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="sitemesh-decorator" prefix="decorator"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>        <title><decorator:title default="title Of main.jsp"></decorator:title></title>    <decorator:head></decorator:head>  </head>   <body      <decorator:getProperty property="body.onload" writeEntireProperty="true"></decorator:getProperty>      <decorator:getProperty property="body.style" writeEntireProperty="true"></decorator:getProperty>      <decorator:getProperty property="body.id" writeEntireProperty="true"></decorator:getProperty>  >    This is my main JSP page. <br>    <decorator:body></decorator:body>  </body></html>