Different applications have different requirements. Take a look at the
exception handling in the workeffort application download
http://www.logicden.com to get an idea.
The files you may want to look at are: ApplicationExceptionHandler.java, files
in package com.logicden.workeffort.service.exception, struts-config.xml,
sql-error-codes.xml. Note that the application uses Spring and the SQL
exceptions get translated to custom exceptions using the mappings in
sql-error-codes.xml. This allows me to support multiple databases and keep with
the layers of the application agnostic of the target database.
The actions generally don't have any try/catch blocks. I let struts handle the
exceptions.
----- Original Message -----
From: "Brian McGovern"
To: user@struts.apache.org
Subject: Proper n tiered exception handling
Date: Tue, 15 Feb 2005 10:28:27 -0500
>
> I'm looking to get a handle on best exception handling practices in
> my app. Kinda beginner question i guess, sorry.
>
> Im catching the various sql and naming exceptions in the data
> classes and logging and throwing a custom exception called
> ApplicationException which is blank and provided below. I've read
> up but an still a little confused on how exactly to build this
> exception class to extend the available struts exception classes
> that would gracefully map to an error display jsp where i could
> display the error to the user. Right now I just get the HTTP
> status 500 strack trace on the screen.
>
> Controller snippet that catches the data obj's thrown ApplicationException:
> ------------------------------------------------------------------------
> try {
> zRepBeanBn =
> MyData.getRepByID(StringUtils.convertToInt(request.getParameter("RepID")));
> }catch (ApplicationException zAppEx){
> throw zAppEx;
> }
> ------------------------------------------------------------------------
>
> ApplicationException that needs work: How do I extend this?
> ------------------------------------------------------------------------
> public class ApplicationException extends Exception {
> public ApplicationException(String message) { }
> }
> ------------------------------------------------------------------------
>
> Thanks
http://www.logicden.com
--
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