package javaBean; public class pagecount { private long count=0; public long getcount()
{
return count;
}
public void setcount(long count)
{
this.count=count;
}
public void add()
{
count++;
} }
<%@page import="javaBean.pagecount"%>
<%@ 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>Insert title here</title>
</head>
<body>
<%
Object obj=application.getAttribute("pagecount");
if(obj==null)
{
pagecount pc=new pagecount();
application.setAttribute("pagecount", pc);
obj=pc;
}
pagecount pagec=(pagecount)obj;
pagec.add();
out.print("计数器="+pagec.getcount());
%>
</body>
</html>
练习版：
package javaBean; public class JavaB3 { private long count=0;
public long getcount()
{
return count;
}
public void setcount(long count)
{
this.count=count;
}
public void add()
{
count++;
} }
<%@page import="javaBean.JavaB3"%>
<%@ 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>Insert title here</title>
</head>
<body>
<%
Object obj=application.getAttribute("JavaB3");
if(obj==null)
{
JavaB3 jb3=new JavaB3();
application.setAttribute("JavaB3", jb3);
obj=jb3;
}
JavaB3 jb=(JavaB3)obj;
jb.add();
out.print("<br>计数器："+jb.getcount());
%>
</body>
</html>
