实例：
实例的文件结构如下图：
看JSP原始代码(程序运行前)：
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<% boolean isDev = false; // 是否开发环境%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<% if(isDev){ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/1.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/2.js"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/1.css" />
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/2.css" />
<% }else{ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/all.js"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/all.css" />
<% } %>
</head>
<body>
<h1 class="c1">Hello World!</h1>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<% boolean isDev = false; // 是否开发环境%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<% if(isDev){ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/1.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/2.js"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/1.css" />
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/2.css" />
<% }else{ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/all.js"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/all.css" />
<% } %>
</head>
<body>
<h1 class="c1">Hello World!</h1>
</body>
</html>
程序运行后JSP的代码：
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
boolean isDev = false; // 是否开发环境
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<% if(isDev){ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2-3gmin.js?99375"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/1-3gmin.js?90"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/2-3gmin.js?91"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/1-3gmin.css?35" />
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/2-3gmin.css?18" />
<% }else{ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2-3gmin.js?99375"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/all-3gmin.js?180"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/all-3gmin.css?53" />
<% } %>
</head>
<body>
<h1 class="c1">Hello World!</h1>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
boolean isDev = false; // 是否开发环境
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<% if(isDev){ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2-3gmin.js?99375"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/1-3gmin.js?90"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/2-3gmin.js?91"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/1-3gmin.css?35" />
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/2-3gmin.css?18" />
<% }else{ %>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.4.2-3gmin.js?99375"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/all-3gmin.js?180"></script>
<link type="text/css" rel="stylesheet" href="<%=request.getContextPath() %>/css/all-3gmin.css?53" />
<% } %>
</head>
<body>
<h1 class="c1">Hello World!</h1>
</body>
</html>
加3gmin后缀的文件全部是程序启动时自动生成的。
实例下载：猛击此处下载
