Servlet HttpSessionAttributeListener Arayüzü

Giriş

Şu satırı dahil ederiz

import javax.servlet.http.HttpSessionAttributeListener;

Açıklaması şöyle

The HttpSessionAttributeListener interface is for receiving notification events about session attribute changes. The order in which its implementations are invoked is unspecified.

Örnek

Şöyle yaparız

import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.annotation.WebListener;

@WebListener
public class MyHttpSessionAttributeListener implements HttpSessionAttributeListener {

  @Override
  public void attributeAdded(HttpSessionBindingEvent event) {
    System.out.println("session attr " + event.getName() + " added with value " +
      event.getValue());
  }

  @Override
  public void attributeRemoved(HttpSessionBindingEvent event) {
    System.out.println("session attr " + event.getName() + " removed with value " +
      event.getValue());
  }

  @Override
  public void attributeReplaced(HttpSessionBindingEvent event) {
    System.out.println("session attr " + event.getName() + " replaced with value " +
      event.getValue());
  }
}