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session.setAttribute("user","test");
<Host
appBase="E:\workspace\JSP\reuse"
name="www.reuse.com">
<Context
docBase="."
path="/"
debug="0"
reloadable="true">
</Context>
<Context
docBase="E:\workspace\JSP\ex"
path="/ex"
debug="0"
reloadable="true">
</Context>
</Host>
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.util.*,java.io.*,java.lang.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
</head>
<body>
<%
session.setAttribute("user","test");
%>
<%
String sstr = (String)session.getAttribute("user");
out.print("<script type=\"text/javascript\">");
out.print("alert(\'"+sstr+"\')");
out.print("</script>");
sstr = (String)session.getId();
out.print("<script type=\"text/javascript\">");
out.print("alert(\'"+sstr+"\')");
out.print("</script>");
%>
<a href="login_confirm.jsp">进入login_confirm.jsp</a>
</html>
<%@ page language="java" import="java.util.*" import="java.io.*" pageEncoding="gb2312"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head></head>
<body>
<%
String sstr = (String)session.getAttribute("user");
out.print("<script type=\"text/javascript\">");
out.print("alert(\'"+sstr+"\')");
out.print("</script>");
sstr = (String)session.getId();
out.print("<script type=\"text/javascript\">");
out.print("alert(\'"+sstr+"\')");
out.print("</script>");
%>
<a href="main.jsp">进入main.jsp</a>
</body>
</html>
<%@ page language="java" import="java.util.*" import="java.io.*" pageEncoding="gb2312"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head></head>
<body>
<%
String sstr = (String)session.getAttribute("user");
out.print("<script type=\"text/javascript\">");
out.print("alert(\'"+sstr+"\')");
out.print("</script>");
sstr = (String)session.getId();
out.print("<script type=\"text/javascript\">");
out.print("alert(\'"+sstr+"\')");
out.print("</script>");
%>
<a href="main/main.jsp">进入main.jsp</a>
</body>
</html>
<session-config>
<session-timeout>60</session-timeout>
</session-config>