Session会话监听程序
Jsp 页面
sessionlistenertest_form.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<%
request.setCharacterEncoding("utf-8");
String name=request.getParameter("name");
String identity=request.getParameter("identity");
if(name!=null&&identity!=null)
{
session.setAttribute("name",name);
session.setAttribute("identity",identity);
response.sendRedirect("display.jsp");
}
%>
<body>
<form action="sessionlistenertest_form.jsp" method="post">
<table align="center" border="1">
<tr><td>姓名:</td><td><input type="text" name="name"/></td></tr>
<tr><td>身份:</td><td><input type="text" name="identity"/></td></tr>
<tr><td colspan="2" align="center"><input type="submit" value="提交"/></td></tr>
</table>
</form>
</body>
</html>display.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<%
if(session.isNew())
{
response.sendRedirect("sessionlistenertest_form.jsp");
}
out.println("name: "+session.getAttribute("name")+"<br/>");
out.println("identity: "+session.getAttribute("identity")+"<br/>");
out.println("session id: "+session.getId()+"<br/>");
out.println("create time: "+session.getCreationTime());
%>
<table cellspacing="2" cellpadding="10"><tr><td><a href="session.jsp">继续会话监听</a></td>
<td><a href="logout.jsp">注销</a> </td></tr></table>
</body>
</html>session.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" import="java.util.*,listener.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<table border="1">
<tr align="center"><td>会话编号</td><td>用户名</td><td>身份</td><td>创建时间</td><td>操作</td></tr>
<%
Iterator it=listener.SessionListener.getSet();
while(it.hasNext())
{
HttpSession session1=(HttpSession)it.next();
%>
<tr><td><%=session1.getId() %></td>
<td><%=session1.getAttribute("name") %></td>
<td><%=session1.getAttribute("identity") %></td>
<td><%=session1.getCreationTime() %></td>
<td><a href="deleteSession.jsp?sessionId=<%=session1.getId() %>">删除</a></td>
</tr>
<%
System.out.println("sessionId:"+session.getId());
}
%></table>
</body>
</html>deleteSession.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" import="java.util.*,listener.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<%
String sessionId=request.getParameter("sessionId");
//System.out.println("deleteSession.jsp:"+sessionId);
HttpSession session1=SessionListener.getSessionById(sessionId);
if(session1!=null)
{
session1.invalidate();
}
response.sendRedirect("session.jsp");
%>
</body>
</html>
logout.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" import="java.util.*,listener.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<%
if(!session.isNew())
{
session.invalidate();
}
response.sendRedirect("sessionlistenertest_form.jsp");
%>
</body>
</html>