本文出自：http://blog.csdn.net/svitter
实验环境：Myeclipse10 + tomcat7
Application对象为了多个应用程序保存信息，对于每个容器，每个用户都共同拥有一个application对象，服务器启动以后，会自动创建一个application对象，这个对象会一直保持到服务器关闭。
下列实例用于统计页面访问次数。
1.application.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
int count = 0;
String c_name = request.getParameter("c_name");
try {
count = Integer.parseInt((application.getAttribute("c_name").toString()));
} catch(Exception e){ }
out.println("自服务器启动后，此页面已经被访问了" + count +"次");
count++;
application.setAttribute("c_name", new Integer(count));
%>
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8" errorPage=""%>
<%
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>使用计数器的例子</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
测试计数器<br>
<jsp:include page="application.jsp">
<jsp:param name="c_name" value=" " />
</jsp:include>
</body>
</html>
对应资源：http://download.csdn.net/detail/svitter/7358563