Session timeout and ViewExpiredException handling on JSF/PrimeFaces ajax request

by

Exceptions which are thrown during ajax requests have by default totally no feedback in the client side. Only when you run Mojarra with project stage set to Development and use <f:ajax>, then you will get a bare JavaScript alert with the exception type and message. But other than that, and in PrimeFaces, there’s by default no feedback at all. You can however see the exception in the server log and in the ajax response (in the webbrowser’s developer toolset’s “Network” section).

You need to implement a custom ExceptionHandler which does basically the following job when there’s a ViewExpiredException in the queue:

String errorPageLocation = "/WEB-INF/errorpages/expired.xhtml";
context.setViewRoot(context.getApplication().getViewHandler().createView(context, errorPageLocation));
context.getPartialViewContext().setRenderAll(true);
context.renderResponse();

Alternatively, you could use the JSF utility library OmniFaces. It has a FullAjaxExceptionHandler for exactly this purpose (source code here, showcase demo here).

See also:

More Related Contents:

  1. How to find out client ID of component for ajax update/render? Cannot find component with expression “foo” referenced from “bar”
  2. ViewExpiredException not thrown on ajax request if JSF page is protected by j_security_check
  3. Can you update an h:outputLabel from a p:ajax listener?
  4. List of events
  5. Ajax update and submission using h:commandButton
  6. When to use valueChangeListener or f:ajax listener?
  7. How can I populate a text field using PrimeFaces AJAX after validation errors occur?
  8. Keep p:dialog open when a validation error occurs after submit
  9. What is the correct way to deal with JSF 2.0 exceptions for AJAXified components?
  10. What values can I pass to the event attribute of the f:ajax tag?
  11. JSF/PrimeFaces ajax updates breaks jQuery event listener function bindings
  12. Rendering other form by ajax causes its view state to be lost, how do I add this back?
  13. How to exclude child component in ajax update of a parent component?
  14. Form submit in conditionally rendered component is not processed
  15. How to handle session expiration and ViewExpiredException in JSF 2?
  16. Process onclick function after ajax call
  17. Add additional parameter to JSF Ajax event listener
  18. How to decrease request payload of p:ajax during e.g. p:dataTable pagination
  19. java.lang.IllegalStateException: CDATA tags may not nest
  20. How to pass parameter to f:ajax in h:inputText? f:param does not work
  21. ICEfaces libary in classpath prevents Save As dialog from popping up on file download
  22. selectOneMenu ajax events
  23. Render multiple components with f:ajax
  24. Conditionally provide either file download or show export validation error message
  25. Who can explain this ajax code for me [closed]
  26. How to get response status code from jQuery.ajax?
  27. Google Maps API throws “Uncaught ReferenceError: google is not defined” only when using AJAX
  28. How to enable cross-domain request on the server?
  29. Stop the browser “throbber of doom” while loading comet/server push iframe
  30. Execute JavaScript after every JSF ajax postback

Leave a Comment