Bean exception handling

Question

Hello,
I have a question concerning the bean exception handling. If I'd like to use a DB-connection inside a bean, how to handle the SqlException to display a nice error message to the user (perhaps next to the submit-button or redirect to another site).
Thx
Stefan

Answer 1

Thank you for the reply. That works fine but I wanted
to avoid using Faces-code inside of the bean because
of portability. Is there a possibility to throw an
exception inside of a setter and catch it somewhere
else to generate the FacesMessage there ?There are at least two ways to look at this.
First, I've found that you often need one or more beans that ties the UI to the backend. For instance, my backend bean may have a method for saving itself to a database, but that method most likely doesn't return a String, as an "action method" must. I also often need a bean to hold UI values that are pure UI artifacts rather than backend values, say a filter criteria for a database search. In this type of bean (I call them "glue beans", others call them "backing bean" or "code behind file") I don't mind having JSF code, so my original suggestion applies to this type of bean rather than to the real backend beans.
Second, in an application where you can bind the JSF components directly to backend bean properties and methods, you can set up an error handler in the web.xml file that displays a nice error message and logs details about the problem for further analysis.
Hans Bergsten (EG member)