Global Error Page In Jsf

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Jsf Error Page Example

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Jsf Error Page Redirect

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 JSF 2 Global exception handling, navigation to error page not happening up vote 5 down vote favorite 4 I am developing a JSF 2.0 based web application. primefaces exception handling I am trying to implement a global exception handler which will redirect the user to a generic error page whenever any exception occurs (e.g. NullPointerException,ServletException,ViewExpiredException etc.) Whenever a NPE occurs in my app, My customnavhandler breakpoint is hit and NavigationHandler code is executed, but somehow redirection to error page is not happening, the requested page remains partially rendered. Any idea what could be wrong here ? One info is that I am throwing an NPE deliberately on the requested page (which was partiallyu rendered after NPE) My faces-config.xml entry com.common.exceptions.CustomExceptionHandlerFactory My CustomNavHandler public class CustomExceptionHandler extends ExceptionHandlerWrapper { private static final Logger logger = Logger.getLogger("com.gbdreports.common.exception.CustomExceptionHandler"); private final ExceptionHandler wrapped; public CustomExceptionHandler(ExceptionHandler wrapped) { this.wrapped = wrapped; } @Override public ExceptionHandler getWrapped() { return this.wrapped; } public void handle() throws FacesException { final Iterator i = getUnhandledExceptionQueuedEvents().iterator(); while (i.hasNext()) { ExceptionQueuedEvent event = i.next(); ExceptionQueuedEventContext context = (ExceptionQueuedEve

April 5, 2012April 6, 2012 470 Words Adding global exception handling using JSF 2.x ExceptionHandler This a

Primefaces Error Page

great feature of JSF 2.x: A generic API to manipulate

Fullajaxexceptionhandler

application exception in a global manner. In order to implement this you must implement (extend) jsf custom error page two different classes: ExceptionHandlerWrapper - Provides a simple implementation of ExceptionHandler that can be subclassed by developers wishing to provide specialized behavior to an existing ExceptionHandler instance. http://stackoverflow.com/questions/18410007/jsf-2-global-exception-handling-navigation-to-error-page-not-happening The default implementation of all methods is to call through to the wrapped ExceptionHandler instance. ExceptionHandlerFactory - A factory object that creates (if needed) and returns a new ExceptionHandler instance. On Duke's Forest this is the implementation: CustomExceptionHandlerFactory.java: package com.forest.exception; public class CustomExceptionHandlerFactory extends ExceptionHandlerFactory { private ExceptionHandlerFactory parent; // this injection https://wmarkito.wordpress.com/2012/04/05/adding-global-exception-handling-using-jsf-2-x-exceptionhandler/ handles jsf public CustomExceptionHandlerFactory(ExceptionHandlerFactory parent) { this.parent = parent; } @Override public ExceptionHandler getExceptionHandler() { ExceptionHandler handler = new CustomExceptionHandler(parent.getExceptionHandler()); return handler; } } CustomExceptionHandlerFactory.java: package com.forest.exception; public class CustomExceptionHandler extends ExceptionHandlerWrapper { private static final Logger log = Logger.getLogger(CustomExceptionHandler.class.getCanonicalName()); private ExceptionHandler wrapped; CustomExceptionHandler(ExceptionHandler exception) { this.wrapped = exception; } @Override public ExceptionHandler getWrapped() { return wrapped; } @Override public void handle() throws FacesException { final Iterator i = getUnhandledExceptionQueuedEvents().iterator(); while (i.hasNext()) { ExceptionQueuedEvent event = i.next(); ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource(); // get the exception from context Throwable t = context.getException(); final FacesContext fc = FacesContext.getCurrentInstance(); final Map requestMap = fc.getExternalContext().getRequestMap(); final NavigationHandler nav = fc.getApplication().getNavigationHandler(); //here you do what ever you want with exception try { //log error ? log.log(Level.SEVERE, "Critical Exception!", t); //redirect error page requestMap.put("exceptionMessage", t.getMessage()); nav.handleNavigation(fc, null, "/error"); fc.renderResponse(); // remove the comment below if you want to report the error in a jsf error message //JsfUtil.addErrorMessage(t.getMessage

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