在SSH框架中增加SiteMesh的支持
1）引入jar包,如下两个jar包需要导入到系统的lib文件夹中:
sitemesh-2.4.jar
struts2-sitemesh-plugin-2.2.1.1.jar
2）修改web.xml增加相应的过滤器
<!-- use ContextLoaderListener initialize Spring container -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- difine ActionContextCleanUp filter -->
<filter>
<filter-name>struts-cleanup</filter-name>
<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
</filter>
<!-- define SiteMesh core filter-->
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
<!-- Struts 2 core Filter -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<!-- first: cleanup filter -->
<filter-mapping>
<filter-name>struts-cleanup</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- second: sitmesh core filter -->
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- third: struts2 core filter -->
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list
<welcome-file>index.html</welcome-file>
</welcome-file-list>
3）在web.xml同级增加一个sitmesh的配置文件decorators.xml,文件内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<decorators defaultdir="/decorators">
<excludes>
</excludes>
<decorator name="main" page="main.jsp">
<pattern>/*</pattern>
</decorator>
<decorator name="menu" page="menu.jsp"/>
</decorators>
4）在decorators文件夹中增加模板文件main.jsp 以及menu.jsp:
main.jsp文件如下:
<%@ page contentType="text/html; charset=UTF-8" language="java" errorPage="" %>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator"%>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title><decorator:title default="AdminPortal title"/></title>
<s:head/>
</head>
<body>
<table width="95%" border="1" align="center">
<tr>
<td colspan="2">
<page:applyDecorator page="/jsp/top.html" name="menu"/>
</td>
</tr>
<tr>
<td width="15%">
<page:applyDecorator page="/jsp/menu.html" name="menu"/>
</td>
<td>
<decorator:body/>
</td>
</tr>
</table>
</body>
</html>
menu.jsp文件如下:
<%@ page contentType="text/html; charset=UTF-8" language="java" errorPage="" %>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator"%>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title><decorator:title default="AdminPortal title"/></title>
<s:head/>
</head>
<body>
<table width="50%">
<tr>
<td><decorator:body/></td>
</tr>
</table>
</body>
</html>
再次运行的时候,就可以看到如下的内容: