1.安装sitemesh插件
与整合其他框架类似，struts2与sitemesh框架的整合也使用了插件方式进行管理 。将struts2-sitemesh-plugin-2.0.6.jar文件复制到WEB-INF/lib下，为了整合sitemesh框架，必须在web.xml中配置sitemesh过滤器，让该核心过滤器来过滤所有的用户请求。但我们知道，struts2的所有值一旦访问该stack context或ValueStack后，里面对应的数值将会被清除掉，如果先使用了struts2的FilterDispather来过滤用户请求，则sitemesh的过滤器将无法取得Stack context或者ValueStack中的数据
为了解决这个问题，struts2提供了ActionContextCleanUp类，在struts2的架构中，标准的过滤器一般以ActionContextCleanUp开始，后面跟着其他需要的过滤器，最后，由FilterDispatcher来处理请求，FilterDispatcher通常是将请求传递给ActionMapper
ActionContextCleanUp的一个重要作用是整合sitemesh页面装饰器，它通知FilterDispatcher在正确的时间清除ActionContext中的请求数据，所以正确的排序如下：
（1）ActionContextCleanUp过滤器
（2）SiteMesh核心过滤器
（3）FilterDispatcher过滤器
web.xml
<?xml version="1.0" encoding="GBK"?><web-app id="jsf" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"><!-- ��struts2�ܹ��У����Ĺ�����tһ����ActionContextCleanUp��ʼ���������������Ҫ�Ĺ����������FilterDispatcher�������� --> <filter> <filter-name>struts-cleanup</filter-name> <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class> </filter> <filter> <filter-name>sitemesh</filter-name> <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class> </filter> <filter> <filter-name>struts</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>struts-cleanup</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>sitemesh</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>struts</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class> </listener> <!-- JavaServer Faces Servlet Configuration, not used directly --> <servlet> <servlet-name>faces</servlet-name> <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <!-- JavaServer Faces Servlet Mapping, not called directly --> <servlet-mapping> <servlet-name>faces</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping></web-app>
spring配置文件
<?xml version="1.0" encoding="GBK"?><!-- 指定Spring配置文件的Schema信息 --><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="bs" class="lee.service.BookService"/></beans>
sitemesh装饰配置文件
<?xml version="1.0" encoding="GBK"?><decorators defaultdir="/decorators"> <!-- 在excludes元素下指定的页面将不会由SiteMesh来装饰 --> <excludes> <pattern>/exclude.jsp</pattern> <pattern>/exclude/*</pattern> </excludes> <!-- 创建一个名为main的装饰器，该装饰器页面为main.jsp, 用于装饰pattern指定的URL的所有页面--> <decorator name="main" page="main.jsp"> <pattern>/*</pattern> </decorator> <!-- 定义一个装饰器,但该装饰器默认不装饰任何页面 --> <decorator name="panel" page="panel.jsp"/></decorators>
装饰器decorators/main.jsp
<%...@ page contentType="text/html; charset=GBK"%><%...@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator"%><%...@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page"%><html> <head> <title><decorator:title default="SiteMesh的装饰器页"/></title> <link href="decorators/main.css" rel="stylesheet" type="text/css"> <decorator:head/> </head> <body> <table width="100%" height="100%"> <tr> <td valign="top"> <!-- 引入一个页面，临时指定所用的装饰器 --> <page:applyDecorator page="/book.html" name="panel" /> <page:applyDecorator page="/link.html" name="panel" /> </td> <td width="100%"> <table width="100%" height="100%"> <tr> <td id="pageTitle"> <decorator:title/> </td> </tr> <tr> <td valign="top" height="100%"> <decorator:body /> </td> </tr> <tr> <td id="footer"> <b>被包含的内容</b><br> SithMesh提供页面装饰支持 </td> </tr> </table> </td> </tr> </table> </body></html>装饰器decorators/panel.jsp
<%...@ page contentType="text/html; charset=GBK"%><%...@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %><p> <table width=250 border=0 cellpadding=0 cellspacing=0> <tr> <th class="panelTitle"> <decorator:title default="小面板页面" /> </th> </tr> <tr> <td class="panelBody"> <decorator:body /> </td> </tr> </table></p>
装饰器样式decorators/main.css
body, td, p { font: normal x-small verdana, arial, helvetica, sans-serif;}.panelTitle { background-color: #003399; color:#eeeeee; font-weight: bold; border-color: #3366ff #000033 #000033 #3366ff; border-width: 1; border-style: solid; padding: 1;}.panelBody { background-color: #eeeeee; border-color: black; border-width: 0 1 1 1; border-style: solid; padding: 2;}#pageTitle { background-color: #003399; color:#eeeeee; font-weight: bold; font-size: large; border-color: #3366ff #000033 #000033 #3366ff; border-width: 1; border-style: solid; padding: 1; text-align: center;}#footer { background-color:#eeeeee; font-size: 9pt; text-align: center; color: black; border-color: #666666 #cccccc #cccccc #666666; border-width: 1; border-style: solid; padding: 1;}
被装饰页面book.html
<html> <head> <title>作者图书</title> </head> <body> <center> Spring2.0宝典<br> 轻量级J2EE企业应用实战<br> 基于J2EE的Ajax宝典