Default Error Page In Jsf
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Mohammed 2 Comments When you run an application in the development project stage and you encounter an error, you get an error jsf exception handling example message in an undesirable form. You probably don't want your users to see that message in such that ugly way. To substitute a better error page, use error-page tag in the web.xml file, in that you can specify either a Java Exception or an HTTP error code. So in case the type jsf exception handling best practices of thrown exception has matched that type mentioned in the web.xml exception-type or the error code that generated by the server has matched error-code that mentioned in the web.xml, the JSF framework will handle it by forwarding the user into the desired view that you've defined for such those errors or exceptions. 1. The Deployment Descriptor web.xml 404 /faces/error.xhtml 500 /faces/error.xhtml java.lang.Exception /faces/error.xhtml State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2 javax.faces.STATE_SAVING_METHOD server javax.faces.application.CONFIG_FILES /WEB-INF/faces-config.xml Faces Servlet javax.faces.webapp.FacesServlet 1 Faces Servlet /faces/* Faces Servlet *.xhtml com.sun.faces.config.ConfigureListener The error codes that being handled in that defined web.xml are 500 and 400. The exceptions that being han
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Jsf Custom Error Page
Sponsorship Thanks Security License Home»Wiki»MyFaces Core»MyFaces Core User Guide»JSF and MyFaces Howtos»Managing Errors - Infos - Warnings Handling Server Errors Error handling for http://javabeat.net/jsf-custom-error-pages/ MyFaces Core 2.0 and later versions Since JSF 2.0, it is possible to provide a custom javax.faces.context.ExceptionHandler or javax.faces.context.ExceptionHandlerWrapper implementation to deal with exceptions. To do that, just create your custom class, an factory that wrap/override it and add the following into your faces-config.xml: faces-config.xml https://myfaces.apache.org/wiki/core/user-guide/jsf-and-myfaces-howtos/managing-errors---infos---warnings/handling-server-errors.html http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd" version="2.0"> org.apache.myfaces.context.ExceptionHandlerFactoryImpl This is an example of an ExceptionHandlerFactory, from myfaces code: ExceptionHandlerFactoryImpl.java public class ExceptionHandlerFactoryImpl extends ExceptionHandlerFactory { @Override public ExceptionHandler getExceptionHandler() { return new SwitchAjaxExceptionHandlerWrapperImpl( new MyFacesExceptionHandlerWrapperImpl(new ExceptionHandlerImpl()) , new AjaxExceptionHandlerImpl()); } } If you need a wrapper: ExceptionHandlerFactoryImpl.java public class ExceptionHandlerFactoryImpl extends ExceptionHandlerFactory { @Override public ExceptionHandler getExceptionHandler() { return new CustomExceptionHandlerWrapper(getWrapped().getExceptionHandler()); } } The most important method to override is ExceptionHandler.handle(). MyFacesExceptionHandlerWrapperImpl.java public class MyFacesExceptionHandlerWrapperImpl extends ExceptionHandlerWrapper { //... public void handle() throws FacesException { //... some custom code goes here ... } } Take a look at MyFaces Core source code, to know in detail how ExceptionHandler implementations works. MyFaces ExceptionHandler MyFaces Core provide a custom ExceptionHandler to deal with exceptions and provide detailed information about it. Since 2.0.8/2.1.2 this is disabled on Production environment
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and http://stackoverflow.com/questions/10534187/why-use-a-jsf-exceptionhandlerfactory-instead-of-error-page-redirection policies of this site About Us Learn more about Stack Overflow the http://stackoverflow.com/questions/10296613/web-xml-error-page-in-jsf-2-0 company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only error page takes a minute: Sign up Why use a JSF ExceptionHandlerFactory instead of redirection? up vote 18 down vote favorite 15 All of the ExceptionHandlerFactory examples I have come across so far redirect a user to a viewExpired.jsf page in the event that a ViewExpiredException is caught: public class ViewExpiredExceptionExceptionHandler extends ExceptionHandlerWrapper { private ExceptionHandler wrapped; public ViewExpiredExceptionExceptionHandler(ExceptionHandler wrapped) { this.wrapped jsf error page = wrapped; } @Override public ExceptionHandler getWrapped() { return this.wrapped; } @Override public void handle() throws FacesException { for (Iterator i = getUnhandledExceptionQueuedEvents().iterator(); i.hasNext();) { ExceptionQueuedEvent event = i.next(); ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource(); Throwable t = context.getException(); if (t instanceof ViewExpiredException) { ViewExpiredException vee = (ViewExpiredException) t; FacesContext facesContext = FacesContext.getCurrentInstance(); Map requestMap = facesContext.getExternalContext().getRequestMap(); NavigationHandler navigationHandler = facesContext.getApplication().getNavigationHandler(); try { // Push some useful stuff to the request scope for use in the page requestMap.put("currentViewId", vee.getViewId()); navigationHandler.handleNavigation(facesContext, null, "/viewExpired"); facesContext.renderResponse(); } finally { i.remove(); } } } // At this point, the queue will not contain any ViewExpiredEvents. Therefore, let the parent handle them. getWrapped().handle(); } } It seems to me that the following simple web.xml configuration is fundamentally the same and a lot simpler: javax.faces.application.ViewExpiredException /viewExpired.jsf This prompts the question - why would one use an ExceptionHandlerFactory? jsf exception-handling web.xml share|improve this question edited May 12 '12 at 10:39 Michał Powaga 13.2k43447 asked May 10 '12 at 12:38 8bitjunkie 4,99542747 Is the code above yours? if not, can you credit the source? &
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up WEB.XML error-page in JSF 2.0 up vote 1 down vote favorite I'm using JSF2 and Glassfish 3.0. I have a very simple application and I'm trying to set up some default error pages for 404 and 500 error. This is the WEB.XML section: 404 /error.xhtml 500 /error.xhtml Even though error.xhtml exists, In the browser I still get the standard HTTP Status 404 - warning. jsf-2 error-handling share|improve this question edited Apr 30 '12 at 22:05 Mr Lister 24.9k85381 asked Apr 24 '12 at 11:01 TGM 69662039 add a comment| 1 Answer 1 active oldest votes up vote 10 down vote The should point to the full qualified name of a subclass of java.lang.Exception. E.g. javax.faces.application.ViewExpiredException /expired.xhtml But what you've there are just HTTP status codes. You should be using instead. 500 /error.xhtml By the way, I wouldn't let 404 and 500 point to the same error page. A 404 is a "page not found" which is usually client's own mistake, not server's mistake. Getting a general error page instead of a "page not found" would then be very confusing. share|improve this answer answered Apr 24 '12 at 13:06 BalusC 682k20324722692 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged jsf-2 error-handling or as