Java Spring TransactionTemplate没有'；不能处理异常

当我尝试捕获

DataIntegrityViolationException

并将其转换为自定义异常时，不会执行catch块

作为示例，我使用了以下代码：

因此，

ServicePointRepository

抛出在我的控制器层处理的

DataIntegrityViolationException

，运行时代码似乎在避免捕获块

我做错了什么

这是PersistenceService中的代码：

@Autowired
private ServicePointRepository servicePointRepository;

@Autowired
private BusinessExceptionFactory businessExceptionFactory;

@Autowired
private TransactionTemplate transactionTemplate;

@Override
public String save(final ServicePointDTO servicePointDTO) {
    final ServicePointEntity servicePointEntity = mapToEntity(servicePointDTO);
    return transactionTemplate.execute(status -> {
        try {
            return servicePointRepository.save(servicePointEntity).getId().toString();
        } catch (DataIntegrityViolationException e) {
            throw businessExceptionFactory.createBusinessException(AlreadyExistException.class, CommonError.ALREADY_EXIST);
        }
    });
}

---

这是正确的方法：

    @Override
public String save(final ServicePointDTO servicePointDTO) {
    final ServicePointEntity servicePointEntity = mapToEntity(servicePointDTO);
    try {
        return transactionTemplate.execute(status -> servicePointRepository.save(servicePointEntity).getId().toString());
    } catch (DataIntegrityViolationException e) {
        throw businessExceptionFactory.createBusinessException(AlreadyExistException.class, CommonError.ALREADY_EXIST);
    }
}

---

此外，此方法不应标记为

@Transactional

您需要定义一个PersistenceExceptionTranslationPostProcessor后处理器，以使用将专有异常转换为Spring DataAccessException层次结构的逻辑代理存储库。还记得用@Repository注释标记存储库，以便检测和代理它们

@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslatorPostProcessor(){
   return new PersistenceExceptionTranslationPostProcessor();
}

或XML中的等效文件