1、maven依赖
<!-- https://mvnrepository.com/artifact/opensymphony/sitemesh -->
<dependency>
<groupId>opensymphony</groupId>
<artifactId>sitemesh</artifactId>
<version>2.4.2</version>
</dependency>
2、web-inf下添加装饰配置文件：decorators.xml
<?xml version="1.0" encoding="UTF-8"?>
<decorators defaultdir="/jsp">
<excludes>
<pattern>/exclude.jsp</pattern>
<pattern>/exclude/*</pattern>
</excludes>
<decorator name="main" page="main.jsp">
<pattern>/*</pattern>
</decorator>
</decorators>
3、编写模板页面
<%-- Created by IntelliJ IDEA. User By: Mr Chen 下午 12:31 --%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib prefix="decorator" uri="http://www.opensymphony.com/sitemesh/decorator" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title><decorator:title default="欢迎使用用户管理系统" /></title>
<decorator:head />
</head>
<body>
<table width="700" align="center" border="0">
<tr>
<td align="center" ><h1><decorator:title /></h1></td>
</tr>
</table>
<hr />
<decorator:body />
</body>
</html>
4、web.xml文件中添加siteMesh过滤器
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>