Handling Session Timeout in Wicket

Define the timeout period in web.xml :

 

<session-config>

<session-timeout>60</session-timeout>

</session-config>



Create a class which extend the AjaxselfUpdatingTimerBehavior and implements IAjaxIndicatorAware :

import org.apache.wicket.ajax.AjaxSelfUpdatingTimerBehavior;

import org.apache.wicket.ajax.IAjaxIndicatorAware;

import org.apache.wicket.util.time.Duration;

 

public class TimerBehavior extends AjaxSelfUpdatingTimerBehavior implements IAjaxIndicatorAware{

 

      public TimerBehavior(Duration updateInterval) {

            super(updateInterval);

      }

      private static final long serialVersionUID = 1L;

 

      @Override

      public String getAjaxIndicatorMarkupId() {

            return null;

      }

}

Create a panel which ill show the confirmation popup to decide whether to continue with current session or close :

import org.apache.wicket.ajax.AjaxRequestTarget;

import org.apache.wicket.ajax.markup.html.AjaxLink;

import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow;

import org.apache.wicket.markup.html.panel.Panel;

 

public class SessionTimeOutPanel extends Panel{

      /**

       *

       */

      private static final long serialVersionUID = 1L;

     

      private boolean status;

     

      public boolean isStatus() {

            return status;

      }

 

      public void setStatus(boolean status) {

            this.status = status;

      }

     

      public SessionTimeOutPanel(String id,final ModalWindow modalWindow) {

            super(id);

            status = false;              

            AjaxLink okLink = new AjaxLink("OkButton") {

                 

                  @Override

                  public void onClick(AjaxRequestTarget target) {

                        setStatus(true);

                        modalWindow.close(target);

                  }

            };

            AjaxLink cancelLink = new AjaxLink("CancelButton") {

                 

                  @Override

                  public void onClick(AjaxRequestTarget target) {

                        setStatus(false);

                        modalWindow.close(target);

                  }

            };

            add(okLink);

           add(cancelLink);

      }

     

}

 HTML page for the above panel:

<wicket:panel>

      <span class="" style="width:99%;background: #4286c5 !important;">Session Time Out</span>

      <div class="">

            <label class="" style="width:100%">Your session is about to expire.Do you wish to continue?</label><br />

      </div><br/>

      <div id="" style="width:100%  padding:1.3em 0em;padding-top:32%

height:2.3em; ">

<a   class=""   href="#" tabindex=""

style="margin-right: 3%;margin-left:35%"  wicket:id="OkButton"> <span>Ok</span>

</a>

<a   class=""   href="#" tabindex=""

style="margin-right: 2%;" wicket:id="CancelButton"><span >Cancel</span>

</a>

      </div>

</wicket:panel>

Create a abstract web page ,all pages should implement this abstractpage:

import org.apache.wicket.Request;

import org.apache.wicket.RequestCycle;

import org.apache.wicket.ajax.AjaxRequestTarget;

import org.apache.wicket.ajax.IAjaxIndicatorAware;

import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow;

import org.apache.wicket.markup.html.WebMarkupContainer;

import org.apache.wicket.markup.html.WebPage;

import org.apache.wicket.protocol.http.PageExpiredException;

import org.apache.wicket.protocol.http.WebRequest;

import org.apache.wicket.util.time.Duration;

 

public abstract class AbstractPage extends WebPage implements

IAjaxIndicatorAware {

 

     

      protected ModalWindow sessionTimeOutModalWindow;

     

      private transient HttpSession httpSession;

      private  int timeOut=0;

      private int timOutCount=0;

     

     

      public ModalWindow getSessionTimeOutModalWindow() {

            sessionTimeOutModalWindow = new ModalWindow("sessionTimeout");

        final SessionTimeOutPanel sessionTimeOutPanel = new SessionTimeOutPanel(

                  sessionTimeOutModalWindow.getContentId(),

                  sessionTimeOutModalWindow);

        sessionTimeOutPanel.setOutputMarkupId(true);

        sessionTimeOutModalWindow.setContent(sessionTimeOutPanel);

        sessionTimeOutModalWindow.setInitialHeight(135);

        sessionTimeOutModalWindow.setInitialWidth(400);

        sessionTimeOutModalWindow.setResizable(false);

       

        sessionTimeOutModalWindow.setWindowClosedCallback(new ModalWindow.WindowClosedCallback() {                        

            public void onClose(AjaxRequestTarget target) { 

          

          if (sessionTimeOutPanel.isStatus()) {

              if(httpSession!=null){

              httpSession.setMaxInactiveInterval(timeOut);

              timOutCount=timeOut;

              }else{

                   throw new PageExpiredException("PageExpiredException");

                    }

             

          }

          else

          {

            target.prependJavascript("window.opener='X';window.open('','_parent','');" +

                        "window.close();");

          }

            }});

                 

        Request request = RequestCycle.get().getRequest();

        if( request instanceof WebRequest )

        {

            WebRequest wr = (WebRequest)request;

            httpSession = wr.getHttpServletRequest().getSession();

            if( httpSession != null ) {

                timeOut=httpSession.getMaxInactiveInterval();

            }

        }

 

 

        return sessionTimeOutModalWindow;

    }

     

     

     

      /**

       * constructor

       */

      public AbstractPage() {

 

          add(getSessionTimeOutModalWindow());

          final WebMarkupContainer timer=new WebMarkupContainer("timer");

        timer.setOutputMarkupPlaceholderTag(true);

        timer.add(new TimerBehavior(Duration.ONE_SECOND){

 

                /**

                   *

                   */

                  private static final long serialVersionUID = 1L;

 

                        @Override

                protected void onPostProcessTarget(AjaxRequestTarget target) {

                    timOutCount--;

                 

                    if(timOutCount==60){

                      sessionTimeOutModalWindow.show(target);

                     // target.addComponent(sessionTimeOutModalWindow);

                    }

                }

         

        });

 

      add(timer);

 

      }

@Override

    public String getAjaxIndicatorMarkupId() {

            timOutCount=timeOut;

           

            return null;

    }

In Html Page add the below lines :

<div wicket:id="sessionTimeout"></div>

<div wicket:id="timer"></div>