How to get all active session id's

Question

hai,
i am new to servlet. i am tring to find out all active session id's for security perpose.
and also i want to deactive a perticular session using that session id.
but i don't know how to do. please help me.
thanks in advance.

Answer 1

Well to me.. I wud like to write a Listener class implementing HttpSessionListener in the following way....
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionListener;
import javax.servlet.http.HttpSessionEvent;
import java.util.HashMap;
public class SessionHandler implements HttpSessionListener{
public static HashMap<String,HttpSession> SessionsMap = new HashMap<String,HttpSession>();
public void sessionCreated(HttpSessionEvent se) {
SessionsMap.put(se.getSession().getId(),se.getSession());
public void sessionDestroyed(HttpSessionEvent se) {
SessionMap.remove(se.getSession().getId());
public static invalidateSession(String SessionId){
HttpSession session =  SessionsMap.get(SessionId);
SessionMap.remove(SessionId);
session.invalidate();
}Note:I'm assuming tht you are running the code on Jdk/jre 1.5+
However, i think its more of core way of implementing this specially usage of static members howevr @ the given situation can very well cater your resources.added to it you add ActivationListener depending on your requirement.
Hope this might help :)
REGARDS,
RaHuL