Most/All of the applications using wicket need a way to handle session time out with Ajax request.So I thought of putting it on my blog.
Wicket life cycle method made everything very easy and that's just kool(Cant help my self)
In just 2 simple steps you can handle Ajax session time out problem.
So here what you need to do:
Step 1:
First override newRequestCycle method in your webApplication class. Like below
public RequestCycle newRequestCycle(Request request, Response response) {
// TODO Auto-generated method stub
return new CustomRequestCycle(this, (WebRequest)request, response);
}
Step 2:
Create new CustomRequestCycle class which extends WebRequestCycle like below
public class CustomRequestCycle extends WebRequestCycle{
public CustomRequestCycle(final WebApplication application, final WebRequest request, final Response response) {
super(application, request, response);
}
@Override
public final Page onRuntimeException(final Page cause, final RuntimeException e) {
// obviously you can check the instance of the exception and return the appropriate page if desired
if (e instanceof PageExpiredException) {
if ( this.getWebRequest().isAjax()) {
return new YourSignonPage(new PageParameters());
}
}
return new YourCustomErrorPage(e);
}
}
See how I override onRuntimeException method. Just check for PageExpiredException and if its Ajax request , return your Sign On Page.
That's it. Kool :)
