How do I run a method in the session event Onclose/onDestroy?

Question

I working with JSP.
I need run a method in ever session closing, i.e., whenever the browser is closed.
how do I make this?

Answer 1

On server-side you can register an HttpSessionListener:

package com.example
public class MySessionListener implements HttpSessionListener {

    public void sessionCreated(HttpSessionEvent event) {
        System.out.println("Session created");
    }

    public void sessionDestroyed(HttpSessionEvent event) {
        System.out.println("Session destroyed");
    }
}

To register you can either add @WebListener annotation to the listner's class or add the listener to web.xml

<listener>
    <listener-class>com.example.MySessionListener</listener-class>
</listener>

The listener won't be called in the moment when the browser is closed it will be called when the session is timed out.