List Sessions

Question

Hello
I know there is a way to list all the sessions for a certian application (ie, thetomcat manager), can someone tell me how to do this? thanks.

Answer 1

Your web.xml is wrong, listeners should be before servlets.
package listeners;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class MyListener implements ServletContextListener, HttpSessionListener {
  public void contextInitialized(ServletContextEvent e)
    e.getServletContext().setAttribute("sessionList", new ArrayList());
  public void contextDestroyed(ServletContextEvent e) {
  public void sessionCreated(HttpSessionEvent e) {
    HttpSession session = e.getSession();
    List sessionList = (List) session.getServletContext().getAttribute("sessionList");
    sessionList.add(session);
  public void sessionDestroyed(HttpSessionEvent e) {
    HttpSession session = e.getSession();
    List sessionList = (List) session.getServletContext().getAttribute("sessionList");
    sessionList.remove(session);
<web-app>
  <listener>
    <listener-class>listeners.MyListener</listener-class>
  </listener>
</web-app>