• JSP之Session对象



    //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 'session_page1.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>
      	<%
      		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd,HH-mm-ss");
    		session.setAttribute("username", "bluze");
    		session.setAttribute("password", "123456");
    		session.setAttribute("hobby", "run");
    		//session.setMaxInactiveInterval(3);
      	%>
        <%=sdf.format(session.getCreationTime()) %><br/>
        <%=session.getId() %><br/>
        <%=session.getAttribute("username") %><br/>
        <%=session.getMaxInactiveInterval() %><br/>
        <a href="session_page2.jsp">链接到session_page2.jsp</a>
        <%
        	session.invalidate();
        %>
      </body>
    </html>
    

    //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 'session_page1.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>
      	<%
      		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd,HH-mm-ss");
    		
      		String[] att = session.getValueNames();
      		for(int i=0;i<att.length;i++){
      			out.println(att[i]);
      		}
      	%>
        <%=sdf.format(session.getCreationTime()) %><br/>
        <%=session.getId() %>
      </body>
    </html>
    

    //web.xml    
    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>



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  • 原文地址:https://www.cnblogs.com/mfmdaoyou/p/6756118.html
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