session的生命周期

chengqiuming

于 2017-11-22 12:19:44 发布

阅读量1k

点赞数

分类专栏： JSP

版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文链接：https://blog.youkuaiyun.com/chengqiuming/article/details/78602077

版权

JSP 专栏收录该内容

112 篇文章

订阅专栏

一创建

二活动

三销毁

四实例

1、session_page1.jsp

<%@ page language = "java" import = "java.util.*,java.text.*" contentType = "text/html; charset=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 > My JSP 'index.jsp' starting page </ 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" >

<!--

<link rel =" stylesheet " type="text/ css " href ="styles.css">

-->

</ head >

< body >

< h1 > session内置对象 </ h1 >

< hr >

<%

SimpleDateFormat sdf = new SimpleDateFormat( "yyyy年MM月dd日 HH:mm:ss" );

Date d = new Date(session.getCreationTime());

session.setAttribute( "username" , "admin" );

session.setAttribute( "password" , "123456" );

session.setAttribute("age", 20);

//设置当前session最大生成期限单位是秒

//session.setMaxInactiveInterval(10);//10秒钟

//session.invalidate();//销毁当前会话。

%>

Session创建时间：<%=sdf.format(d)%><br>

Session的ID编号：<%=session.getId()%><BR>

从Session中获取用户名： <%= session.getAttribute( "username" ) %> < br >

<%

//session.invalidate();//销毁当前会话

%>

< a href = "session_page2.jsp" target = "_blank" > 跳转到Session_page2. jsp </ a >

</ body >

</html>

2、session_page2.jsp

<%@ page language = "java" import = "java.util.*,java.text.*" contentType = "text/html; charset=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 > My JSP 'index.jsp' starting page </ 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" >

<!--

<link rel =" stylesheet " type="text/ css " href ="styles.css">

-->

</ head >

< body >

< h1 > session内置对象 </ h1 >

< hr >

<%

//SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");

//Date d = new Date(session.getCreationTime());

//session.setAttribute("username", "admin");

%>

Session的ID编号：<%=session.getId()%><BR>

从Session中获取用户名： <%= session.getAttribute( "username" ) %> < br >

Session中保存的属性有: <%

String[] names =session.getValueNames();

for ( int i=0;i<names.length;i++)

{

out.println(names[i]+"  ");

}

%> < br >

</ body >

</html>

五测试某次会话中通过超链接打开的新页面属于同一次会话

六测试只要当前会话页面没有全部关闭，重新打开新的浏览器窗口访问同一项目资源时，属于同一次会话

七测试通过调用session.invalidate()方法对session进行销毁

在代码中调用session.invalidate();//销毁当前会话

八 Tomcat超时时间设置方法

<? xml version = "1.0" encoding = "UTF-8" ?>

< web-app version = "2.5"

xmlns = " http://java.sun.com/xml/ns/javaee" ;

xmlns:xsi = " http://www.w3.org/2001/XMLSchema-instance" ;

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";>

< display-name ></ display-name >

< welcome-file-list >

< welcome-file > index.jsp </ welcome-file >

</ welcome-file-list >

< session-config >

< session-timeout > 1 </ session-timeout >

</ session-config >

</web-app>

九小知识点

1、Tomcat后台管理方法

查看图片附件

评论

被折叠的条评论为什么被折叠?

到【灌水乐园】发言

查看更多评论

添加红包

成就一亿技术人!

hope_wisdom

发出的红包

实付元

使用余额支付

点击重新获取

扫码支付

钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。