1、被包含的JSP需要添加page指令
2、<jsp:include page=""> </jsp:include>
被包含的JSP书写格式
<%@page language="java" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"%>
<div id="menu">
<ul>
<li>
<a href="../aboutus.jsp">关于我们</a>
<ul>
<li>
<a href="../aboutus/contactInfo.jsp">联系方式</a>
</li>
<li>
<a href="../aboutus/messageBoard.jsp">留言板</a>
</li>
</ul>
</li>
</div>
包含的JSP书写格式
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!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>监测网</title>
</head>
<body>
<div id="container">
<div id="header">
<img src="../images/header.png" />
</div>
<div id="menu">
<jsp:include page="../include/menu.jsp"></jsp:include>
</div>
<div id="body">
<div id="title">
<h1>信息查询</h1>
</div>
<div>
</div>
</div>
</div>
</body>
</html>