Jsf Error Handler
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta jsf error page example Discuss the workings and policies of this site About Us Learn jsf exception handling best practices more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us primefaces exception handling Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like jsf error page redirect 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. I am trying to implement a global exception handler which will redirect the user to a generic
Fullajaxexceptionhandler
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
April 5, 2012April
Primefaces Error Page
6, 2012 470 Words Adding global exception handling jsf custom error page using JSF 2.x ExceptionHandler This a great feature of JSF 2.x:
Diggs Java JSFJSF Global Exception Handler Factory Exampleby MemoryNotFound · Published December 18, 2015 · Updated December 18, 2015In this tutorial we show you how to create a Global Exception Handler http://memorynotfound.com/jsf-global-exception-handler-factory-example/ Factory. We create a factory that extends the javax.faces.context.ExceptionHandlerFactory. Here we can override the getExceptionHandler and return a new CustomExceptionHandler which will handle all the exceptions thrown by JSF.Error Throwing Managed BeanHere is a simple managed bean that'll throw an error.package com.memorynotfound.jsf; error page import javax.faces.bean.ManagedBean; import javax.faces.bean.RequestScoped; @ManagedBean @RequestScoped public class ErrorBean { public void throwError(){ throw new RuntimeException("throwing new error"); } }Custom Exception Handler FactoryWe create a factory that extends the javax.faces.context.ExceptionHandlerFactory. Here we can override the getExceptionHandler and return a new CustomExceptionHandler which will jsf error page handle all the exceptions thrown by JSF.package com.memorynotfound.jsf; import javax.faces.context.ExceptionHandler; import javax.faces.context.ExceptionHandlerFactory; public class CustomExceptionHandlerFactory extends ExceptionHandlerFactory { private ExceptionHandlerFactory exceptionHandlerFactory; public CustomExceptionHandlerFactory() { } public CustomExceptionHandlerFactory(ExceptionHandlerFactory exceptionHandlerFactory) { this.exceptionHandlerFactory = exceptionHandlerFactory; } @Override public ExceptionHandler getExceptionHandler() { return new CustomExceptionHandler(exceptionHandlerFactory.getExceptionHandler()); } }Custom Exception HandlerThis class extends from javax.faces.context.ExceptionHandlerWrapper and intercepts all the exceptions thrown by JSF. In the handle() method we access the thrown exceptions to appropriately handle them. In this case we add some information to the request scope in order to print them on a custom error page.package com.memorynotfound.jsf; import javax.faces.FacesException; import javax.faces.application.NavigationHandler; import javax.faces.context.ExceptionHandler; import javax.faces.context.ExceptionHandlerWrapper; import javax.faces.context.ExternalContext; import javax.faces.context.FacesContext; import javax.faces.event.ExceptionQueuedEvent; import javax.faces.event.ExceptionQueuedEventContext; import java.io.IOException; import java.util.Iterator; import java.util.Map; public class CustomExceptionHandler extends ExceptionHandlerWrapper { private ExceptionHandler exceptionHandler; public CustomExceptionHan