actionErrors inside of Action

[Jack]

I have this problem(I'm using struts)
When I want to show an error that returns from hibernate, it starts to complicate
I access to hibernate through facade -> Service -> Dao -> Hibernate

When I send the exception of ViolationConstraint, it arrives to the action but when I want to returns to the original page, it returns me a blank page.
In the catch block I have this

Code:

    ActionErrors errors =new ActionErrors();
                    errors.add("everybody", new ActionError("errors.duplicate"));
                    saveErrors(request,errors);

                    System.out.println("here is the Constraint Exception!!!!!!!!!!!!!!!!!!!!");
                    return mapping.findForward(mapping.getInput());

What is happening?
Where is the error?

[Ed]

try with
return mapping.getInputForward();
then tell me if it worked

[bbq]

try this:
return (new ActionForward(mapping.getInput()));