Jsf Facelet Error Page
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Jsf Exception Handling Example
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Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Customize Facelets error page up vote 2 down vote favorite I have a Facelets(JSF 1.2 (myfaces)) web app and I want to customize my
Jsf Custom Error Page
error page - which would seem to be a natural thing to do when an application matures. I got really confused in the process. I found the following: I haven't found a way to customize Facelets' error page. I haven't found where the template is. I have found solutions with overriding the ViewHandler that would do sendRedirect(). I think this should be accomplishable without writing code, especially the ViewHandler. I have found a way to switch off Facelets' error handling and using myFaces' one: code: Orchestra ExtVal Portlet Bridge Test primefaces error page Commons Ext-Scripting Sandbox Others Project Documentation Documentation Index JSF Intro Quick Start Getting Started FAQ Confluence Wiki Public exceptionhandlerwrapper Wiki Compatibility Continuous Integration Issue Tracking Mailing Lists Project License Project Summary Project Team Source Repository About Foundation http://stackoverflow.com/questions/5362459/customize-facelets-error-page ASF 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 MyFaces Core 2.0 and later versions Since JSF 2.0, it is possible https://myfaces.apache.org/wiki/core/user-guide/jsf-and-myfaces-howtos/managing-errors---infos---warnings/handling-server-errors.html 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 to some page, only to see a nasty error? This is what you get out-of-box with facelets. Most of the time it happens when the facelet tries http://planet.jboss.org/post/custom_jsf_facelet_exception_handling to resolve some EL expression, needs to create some JSF managed bean, http://www.softwareengineeringsolutions.com/thoughts/frameworks/JSF.Techniques-Error.Handling.htm but one or more required URL parameters are either missing or have invalid values. In a development environment, it makes sense to show this page because the various pieces of contextual information (full stack trace + JSF component tree + variables in scope) provide plenty of clues with which error page to diagnose the issue. However, when you ship a product to a customer or push your changes to a production environment, it would be nice to change the behavior and provide a pleasant error page to the user. Fortunately, the facelets framework makes overriding this default behavior incredibly simple. The basic premise is to redirect to a custom error page so you jsf exception handling can provide a layout that hides the unappealing stack trace, but which still provides a link to view those details (primarily so your customers can report the bugs back to you). Note: the following code examples will be pulled directly from the RHQ / Jopr code base. The first step is to add a custom view handler to your web application. Open up the faces-config.xml file and add a custom view handler: plans sometimes result in exception/error conditions that we failed to consider. Even worse, there may be errors thrown by any one of the numerous frameworks that we use, which can often be out of our control. For obvious reasons, filling a user's screen with a Java stack trace is not the optimal solution in these situations. Instead, we'd like to provide the user with a simplified indication of the error condition, and provide some options for recovery. In this article we will look at how error handling may be implemented for applications written using MyFaces/Facelets. 1. The Servlet Specification The Servlet 2.5 specification terms this the "error page mechanism", and describes how HTTP error codes or uncaught exception types can be mapped to error handling resources – either static HTML pages, or dynamic resources (JSPs or servlets). This mechanism is very declarative in nature, and is driven by the Primefaces Exception Handling