Overriding the default exception mapper supplied by JAX-RS implementations

BeanValConstrainViolationExceptionMapper.java

@Provider
public class BeanValConstrainViolationExceptionMapper implements ExceptionMapper<ConstraintViolationException>{

    @Override
    public Response toResponse(ConstraintViolationException e) {
        System.out.println("BeanValConstrainViolationExceptionMapper in action");

        ConstraintViolation cv = (ConstraintViolation) e.getConstraintViolations().toArray()[0];
        //oh yeah... you need to shell out some $$$ !
        return Response.status(Response.Status.PAYMENT_REQUIRED)
                .entity(new ConstraintViolationEntity(cv.getMessage()))
                .build();
    }
    
}