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Cannot Process Actionmessages Instance

If you are new to Struts, read the ‘first steps in struts' tutorial, you can find at http://www.laliluna.de/articles/posts/first-steps-using-struts-tutorial.html. Comment Cancel Post jocsch Member Join Date: Nov 2004 Posts: 62 #9 Jan 26th, 2006, 04:17 PM OK. If we simply print the Java traceback we get something like this: hansen.playground.MyException2: ClassA.methodA: important data . . .at hansen.playground.ClassA.methodA(ClassA.java:9)at hansen.playground.TryException.execute(TryException.java:63). . .(several lines omitted) . . . Struts stores it in the request object using the string value "org.apache.struts.action.ACTION_MESSAGE". http://sauvblog.com/cannot-process/cannot-process-actionmessages-instance-of.html

Using chained exceptions An exception typically occurs in a method in a "calling chain" initiated by the Action class. Not the answer you're looking for? For sure it is something stupid, but I currently don't have a clue what could be wrong. and when I am not using validate method then application works perfect. –Pedantic Aug 21 '11 at 13:44 stackoverflow.com/questions/7138578/… I have asked the same question here . –Pedantic Aug https://coderanch.com/t/48437/Struts/framework/process-ActionErrors-instance-class

Chapter 10 has an excellent chapter on Exception Handling, which also covers the new 1.1 features.Previous articles from JavaBoutique about Struts: - "Stepping through Jakarta Struts" - "Coding your second Jakarta errors.byte={0} must be a byte. I have a bunch of questions regarding RC1. It's common to re-throw the exception, but if the error can be repaired partly or completely, then the whole situation could end up in a warning message sent to the user.

I don't show them here because they're simple extensions of the base Exception class. They're almost identical to the Message classes, and most of what I'll explain below for the Message classes works equally well for the Error classes. If you want to display an error associated with a form property use the attribute property of the html:messages tag. Instead of having almost the same code replicated in every Action class you can now move this code to the ExceptionHandler.

Why does the Minus World exist? errors.long={0} must be a long. Earlier we saw that messages from the ActionMessages object are displayed like this:
Exception handling in Struts Let me start by defining what I mean by "exception handling". click here now It's also necessary since we want to move Java code away from error.jsp.

errors.email={0} is an invalid e-mail address. One more thing about the ActionMessage class: you may specify parameters to the message taken from the message resource file: msg = new ActionMessage("data.do", "stop");messages.add("message2", msg); With "data.do=Please {0}" this will You typically do this in the Action class. Thanks, Markus Tags: None curtney Senior Member Join Date: Dec 2004 Posts: 208 Curtney Jacobs #2 Jan 25th, 2006, 01:45 PM Greetings!

Initialize the properties in the reset() method. http://ibookmate.blogspot.com/2009/06/struts-actionmessages-and-actionerrors.html Instead you give a key to the Struts message resource file (also called "the application property file"). Call the example by using the following links: http://localhost:8080/Validation/

Copyright (c) 2004-2016 by Sebastian Hennebrueder, laliluna.de Impressum If we enter "tryDEH" in the jsp-page we'll receive this answer: In error.jsp All Attributes in request scope: . . . (a few lines left out here) . . .

Instead of coding the exception handling in the Action class, we can now specify in struts-config how a specific exception should be treated. his comment is here Hopes this helps. _Curtney Comment Cancel Post Keith Donald Web App Development Lead Spring Team Join Date: Aug 2004 Posts: 2794 Keith Donald Core Spring Development Team #3 Jan 25th, 2006, You might also have to fix up a few things to keep the program state stable, but eventually you'll also have to inform the user of the situation. It's due to ActionMessage is the parentClass of ActionError.

It's how you handle serious errors in your program. If I receive written permission to use content from a paper without citing, is it plagiarism? If not, we simply return to the jsp-page. http://sauvblog.com/cannot-process/cannot-process-actionmessages-instance-of-class.html Try MarkMail. Search MarkMail for "cvs commit: jakarta-struts/src/share/org/apache/struts/util LocalStrings.propert". Date: 15 May 2003 23:28:06 -0000 From: [email protected] Subject: cvs commit: jakarta-struts/src/share/org/apache/struts/util LocalStrings.properties dgraham 2003/05/15 16:28:06 Modified: src/share/org/apache/struts/util LocalStrings.properties Log:

The old ActionError(s) If you've been using Struts before version 1.1 you probably know the ActionErrors and ActionError classes and the corresponding tag. implemented through Log4J or the JDK1.4 Logging API)write as much useful data as possible to the log. A good workman is known by his tools.

But including the traceback in the page has at least two advantages: the user may phone right away to the help desk and pass (by voice or mail) the technical information.

It's a matter of personal choice if you'll also include the raw traceback in the page. Thanks, Gayatri Marc Peabody pie sneak Sheriff Posts: 4727 I like... Object o = request.getAttribute("MYEXCEPTION"); if (o == null) o = request.getAttribute(Globals.EXCEPTION_KEY); if (o != null) { Throwable t = (Throwable)o; . . . They're both held in the request object: Collection Queue name in request object Saved by ActionErrors Globals.ERROR_KEY = "org.apache.struts.action.
ERROR" saveErrors (HttpServletRequestrequest, ActionErrorserrors) ActionMessages Globals.MESSAGE_KEY = "org.apache.struts.action.
ACTION_MESSAGE" saveMessages (HttpServletRequestrequest, ActionMessagesmessages)

This gives us the same traceback as in Listing 11. For showing all the messages you'll unfortunately have to use both of the tags above. You use exceptions when the application has encountered a serious error. navigate here Struts, however, maintains two separate queues: one for ActionErrors and one for ActionMessages.

First we enter "tryChecked1" in the tryexception.jsp page. Create a struts project Let's start, create a new struts project and a package named de.laliluna.tutorial.validation.