我有这个spring服务：

@Service
@Transactional
public class ConsorcioServiceImpl implements ConsorcioService {

    ...

    @Autowired
    private ConsorcioRepository consorcioRepository;

    @Override
    public void saveBank(Consorcio consorcio) throws BusinessException {

        try {
            consorcioRepository.save(consorcio);
        }
        catch(DataIntegrityViolationException divex) {
            if(divex.getMessage().contains("uq_codigo")) {
                throw new DuplicatedCodeException(divex);
            }
            else {
                throw new BusinessException(dives); 
            }
        }
        catch (Exception e) {
            throw new BusinessException(e);
        }
    }


}

该服务使用以下Spring Data存储库：

@Repository
public interface ConsorcioRepository extendsCrudRepository<Consorcio, Integer> {


}

我从Spring控制器调用服务：

@Controller
@RequestMapping(value = "/bank")
public class BancaController {

    @Autowired
    private ConsorcioService consorcioService;

    @RequestMapping(value="create", method=RequestMethod.POST)
    public ModelAndView crearBanca(@Valid BancaViewModel bancaViewModel, BindingResult bindingResult,
                                   RedirectAttributes redirectAttributes) {
        ModelAndView modelAndView;

        MessageViewModel result;
        try {

            consorcioService.saveBank(bancaViewModel.buildBanca());
            result = new MessageViewModel(MessageType.SUCESS);
            redirectAttributes.addFlashAttribute("messageViewModel", result);
            modelAndView = new ModelAndView("redirect:/banca/crear");
            return modelAndView;
        } catch (Exception e) {
            result = new MessageViewModel(MessageType.ERROR);
            modelAndView = new ModelAndView("crear-bancas");
            modelAndView.addObject("messageViewModel", result);
            return modelAndView;
        }
}

但是我在控制器中得到的例外是：org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Transaction marked as rollbackOnly
而不是DuplicatedCodeException我抛出了服务。我需要确定异常的类型，以便提供自定义友好的用户消息。