http error codes in gwt rpc

I am working with a web application which uses gwt, spring, hibernate. And I am using gwtrpcspring RemoteServiceDispatcher for remote service mapping. Currently if my application throws MyException from any method I want catch that and have to send some http error codes like 402. Based on the ex开发者_如何学Pythonception type error codes will change. I am planning to do this at generic level. Is there any way to achieve without help of spring AOP?

How to achieve this in gwt rpc/spring at higher level?

A good generic way of approaching this problem is to define/subclass your "MyException" class, that represents the different error states. Using RPC those can be sent to the client where you can do your processing.