examples.servlets.lifecycle
Class SessionListener

java.lang.Object
  |
  +--examples.servlets.lifecycle.SessionListener

All Implemented Interfaces:

java.util.EventListener, javax.servlet.http.HttpSessionListener

public class SessionListener

extends java.lang.Object

implements javax.servlet.http.HttpSessionListener

SessionListener is a servlet listener class that implements the javax.Servlet.http.HttpSessionListener interface. This class simply implements the sessionDestroyed and sessionCreated methods to log the calls of them to standard out. These methods are called when a client initializes an Http Session, and when that session is destroyed.

Author:

Copyright (c) 2002 by BEA Systems, Inc. All Rights Reserved.

Field Summary

static java.util.Hashtable	h
(package private) java.io.ObjectInputStream	in
(package private) java.io.ObjectOutputStream	out
(package private) javax.servlet.http.HttpSession	sess

Constructor Summary

SessionListener()

Method Summary

void	log(java.lang.String s) log method to prepend all messages from this class with [SessionListener]
void	sessionCreated(javax.servlet.http.HttpSessionEvent evt) log the call of sessionCreated.
void	sessionDestroyed(javax.servlet.http.HttpSessionEvent evt) log the call of sessionDestroyed.

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

h

public static java.util.Hashtable h

in

java.io.ObjectInputStream in

out

java.io.ObjectOutputStream out

sess

javax.servlet.http.HttpSession sess

Constructor Detail

SessionListener

public SessionListener()

Method Detail

log

public void log(java.lang.String s)

log method to prepend all messages from this class with [SessionListener]

sessionCreated

public void sessionCreated(javax.servlet.http.HttpSessionEvent evt)

log the call of sessionCreated. Also add the session to a hashTable so List.jsp has access to the session info.

Specified by:

sessionCreated in interface javax.servlet.http.HttpSessionListener

sessionDestroyed

public void sessionDestroyed(javax.servlet.http.HttpSessionEvent evt)

log the call of sessionDestroyed. Also remove the session from the hashTable of sessions.

Specified by:

sessionDestroyed in interface javax.servlet.http.HttpSessionListener