代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>
<base href="<%=basePath%>">
<title>iframe框架</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="scripts/jquery/jquery-1.4.4.min.js" type="text/javascript"></script>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<div style="width: 200px;height: 100%;float: left;border-right: 2px lolid #2F4050;"/>
<iframe src="/left.jsp" style="width: 100%;height: 100%" frameborder="0"></iframe>
</div>
<div style="width:calc(100%-202px);height: 100%;float: left;"/>
<iframe src="/left.jsp" style="width: 100%;height: 100%;" target="" frameborder="0"></iframe>
</div>
</body>
</html>