After having discussed message handling in Struts, we'll see how Struts handles exceptions and start to investigate what the benefits of declarative exception handling could be. Here is the setup for my test: Spring 1.2.6 Struts 1.2.8 Spring Web Flow 1.0 RC1 snapshot (today). It's possible to have more than one message with a given label. This is not necessary with the new
In the TryException class we'll call two methods tryChecked1 and tryChecked2, which throws two checked exceptions called MyException1 and MyException2. My struts-config: Code:
Finally I'll mention that it's also possible to add an exception handler to a specific action--e.g.: Listing 15:Declaring a local exception handler
and the validate method called. All Rights Reserved. The traceback and all other useful information will have to be written to a log file or some other media, to be used by the support people. We'll see below how to do this.
See the updated birthdate sample for an example. But the new SpringBindingAction bean seems to do something differently. The result is this: As you can see we have defined this message in the message resource file: "errors.exception=A problem was repaired". http://java-errors.blogspot.com/2012/04/cannot-process-actionmessages-instance.html My form is getting submitted automatically.
Here's an example where the Action class calls a method in ClassA which calls a method in ClassB, where the exception is thrown: Listing 16:Using chained exceptions In the Action class: What is the total sum of the cardinalities of all subsets of a set? As you can see both checked and unchecked exceptions are in the list. It could be a database access that fails because you've supplied an incorrect password.
The most interesting attribute, besides the ones we've already seen, is the handler attribute. A sensible solution could be to put our messages in some kind of Java Collection, maybe a LinkedList: Listing 1: Using a List to hold messages List messages = new LinkedList();messages.add("Data In the jsp-page you use the
A special class of messages are "validation messages", which are sent out as the result of the validation of a form. his comment is here Revision Changes Path 1.8 +17 -2 jakarta-struts/src/share/org/apache/struts/util/LocalStrings.properties Index: LocalStrings.properties =================================================================== RCS file: /home/cvs/jakarta-struts/src/share/org/apache/struts/util/LocalStrings.properties,v retrieving revision 1.7 retrieving revision 1.8 diff -u -r1.7 -r1.8 --- LocalStrings.properties 20 Jan 2003 12:43:44 -0000 1.7 Java World Open Source Testing InfoQ IBM Developer Works The Server Side Google+ Blog Archive ► 2014 (1) ► May (1) ► 2013 (8) ► December (2) ► May (1) ► You typically do this in the Action class.
The sample works nicely--I have not been able to re-create the issue you are having, or the issue related to SpringBindingActionForm binding. The "delete account" feature is in a portlet, but it seems that informations about the deletion is not updated for others portlets, or the session is always active, or some magic 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. http://sauvblog.com/cannot-process/cannot-process-actionmessages-instance-of-class.html share|improve this answer edited Sep 22 '12 at 8:38 Baz 25.7k94168 answered Sep 11 '12 at 17:48 James 111 add a comment| Your Answer draft saved draft discarded Sign up
As before our point of view is the Action class, and we'll first make a small test set-up to see what throwing an exception will cause. Post Reply Bookmark Topic Watch Topic New Topic Similar Threads Behaviour on failure of validate in form bean validation error messages DispatchAction and Validator Validation Validation All times are in JavaRanch exception javax.servlet.ServletException: my Exception at org.apache.struts.action.RequestProcessor.processException (RequestProcessor.java:541) . . . (traceback continues) . . .
In PR3 we had the following code in the SWF validator to put a message into the global message space Code: errors.reject("org.apache.struts.action.GLOBAL_MESSAGE","error.someKey"); and could use this code in the jsp to I managed to resolve my original issue by updating the findEffectiveMessageKey(ObjectError) method in the SpringBindingAction. If specified, className must be a subclass of the default configuration bean ["org.apache.struts.config.ExceptionConfig"] handler Fully qualified Java class name for this exception handler. ["org.apache.struts.action.ExceptionHandler"] key The key to use with this navigate here Comment Cancel Post jocsch Member Join Date: Nov 2004 Posts: 62 #9 Jan 26th, 2006, 04:17 PM OK.
Using chained exceptions An exception typically occurs in a method in a "calling chain" initiated by the Action class. I've specified these two lines in this file: data.ok=Data saved successfully data.continue=Please continue It's considered good practice to keep your fixed texts in the message resource file, and it also gives Execute bash script from vim Underbrace under nested square roots What is with the speech audience? Keith Comment Cancel Post jocsch Member Join Date: Nov 2004 Posts: 62 #8 Jan 26th, 2006, 03:42 PM Hi Keith, thanks for your work.
Platform Case Studies and Docs Subscription Services Request a Demo Marketplace Apps Downloads Company Press Releases Careers Contact Us 1400 Montefino Avenue Diamond Bar, CA 91765 USA +1-877-LIFERAY Powered by Liferay 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, My advice is therefore that you use the new ActionMessage(s) classes. For sure it is something stupid, but I currently don't have a clue what could be wrong.
In our app we need this combined approach of using messages and errors. Join them; it only takes a minute: Sign up org.apache.struts.action.ActionMessage cannot be cast to org.apache.struts.action.ActionError up vote 3 down vote favorite I am working on struts1.2 application. The new ActionMessages and ActionMessage classes and
Also, post your registerFlow.xml. The default attribute is the value specified by the string constant declared at Globals.MESSAGES_KEY. [org.apache.struts.Globals.MESSAGES_KEY] className The configuration bean for this ExceptionHandler object. Flag Please sign in to flag this as inappropriate. Struts integration with a multi-step wizard with multiple form views (and piecemeal validation per form). 2.
the error.jsp page, where you can inform the user of the error, and how he or she can proceed. We'll first see how Struts, per default, handles exceptions and then continue by looking at how exception handling can be configured through the struts-config file. Struts, however, maintains two separate queues: one for ActionErrors and one for ActionMessages.