Handling Exception like validation errors in Spring MVC

Question

I have configured the SimpleMappingExceptionResolver in my web application, which is handling all the unexpected exceptions in the application and directing the user a to simple error page for recovery.

But what would be a best practice of handling an expected exception (more specifically: exception caused by hibernate optimistic concurrency control)?

I don't want the user to be directed to a new error page, but allow him/her to continue working in the same jsp page. What is the best method to achieve this?

swallow the exception where they can occur (maybe log and give a warning on the same jsp page) ? — Redlab
– Redlab, Commented Jul 21, 2010 at 20:10

Affe · Accepted Answer · 2010-07-21 20:22:13Z

1

Assuming Spring 3, you can annotate methods on your Controller class with @ExceptionHandler to define what should happen when particular types of exceptions come out of your handler methods. The signature is not quite as flexible as @RequestMapping methods, but you can generally manage what you want. (Which in this case sounds like just add an error message to the model map and re-run the method that handles GET)

answered Jul 21, 2010 at 20:22

Affe

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Affe Over a year ago

Just be mindful that you don't have an implicit map, if you have methods annotated with @ModelAttribute that you're using to populate it, you may need to manually rerun them depending on the View!

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