Transaction rollback in Spring MVC controller

I have a Spring MVC controller annotated with @Transaction, and under certain inputs I need to rollback the transaction.

As I understand, the proper way to trigger a rollback is to throw an exception from the controller.

But if I throw an exception from the controller, I won't get a chance to return a ModelAndView object from the controller.

How can I trigger a rollback in the controller, while still 开发者_运维技巧providing a ModelAndView to be rendered?

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Exceptions are the appropriate route to follow. Spring can map exceptions to views as well. This is probably what you want to do.

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First, I don't think that using @Transaction on controller methods is a good thing. It's better to keep transactional logic in a 'service tier' and use the @Transaction annotation there.

But if you still want to use @Transaction on the controller, take a look at org.springframework.web.servlet.handler.SimpleMappingExceptionResolver