Jsf Error Page Handling
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a community of 6.2 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. I am trying to implement jsf custom error page 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
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Certification https://coderanch.com/t/502427/JSF/java/handle-exception-JSF Databases Caching Books Engineering Languages Frameworks Products This Site Careers Other all forums Forum: JSF How to handle http://www.beyondjava.net/blog/jsf-2-0-hides-exceptions-ajax/ exception in JSF2.0? Amrit pandey Greenhorn Posts: 19 posted 6 years ago Hello to all, I am try error page to use new feature of exception handling in JSF2.0. Requirement is to show the stack trace on the error pageusing JSF2.0 exception Handling feature, if any unhandled exception occur . Problem is that, when exception is occurring jsf error page , error page is displayed but it is not displaying the error info that I am trying to display. I think I am not able to use the proper EL to retrieve the value. Please suggest..... Below are the codes: faces-config.xml
exceptions. An exception occurs on the server side without getting visible on the client side. The client doesn't show any reaction at all. Often you need a tool like FireBug to become aware there's an error. It took me a while to realize this only happens with AJAX requests, and that this is a well-known behavior in the JSF community. However, there's at least one excellent book (also available at jsfatwork.irian.at) which doesn't mention the problem. So maybe it's worth spending a couple of minutes to write a small article on an old topic. When an AJAX request runs on an error typically an error message is returned to the client. Unfortunately JSF AJAX clients aren't prepared to deal with arbitrary error messages, so they simply ignore them. The standard approach to display errors They can afford to do so because there's a dedicated mechanism to show error messages in the servlet API. With servlets and JSP pages it suffices to register an error page in the web.xml: