Spring MVC 中的 Hibernate 事务建议

Question

我的项目使用的是 Spring MVC4、Hibernate 5。我已经使用 Advice Interceptor 配置了休眠事务，但它并没有按我的意愿回滚。请帮助我，我的配置有什么问题？

我所有的代码如下： 1。休眠配置：

    @Configuration
    @EnableTransactionManagement
    public class DataSourceConfiguration {

        @Autowired
        private Environment env;

        @Bean
        public LocalSessionFactoryBean sessionFactory() {
            LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
            sessionFactory.setDataSource(dataSource());
            sessionFactory.setPackagesToScan(
                            new String[] {env.getProperty("spring.hibernate.packagesToScan")});
            sessionFactory.setHibernateProperties(hibernateProperties());
            return sessionFactory;
        }

        @Bean
        public DataSource dataSource() {
            DriverManagerDataSource dataSource = new DriverManagerDataSource();
            dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
            dataSource.setUrl(env.getProperty("spring.datasource.url"));
            dataSource.setUsername(env.getProperty("spring.datasource.username"));
            dataSource.setPassword(env.getProperty("spring.datasource.password"));

            return dataSource;
        }

       @Bean
        @Autowired
        public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
            HibernateTransactionManager txManager = new HibernateTransactionManager();
            txManager.setSessionFactory(sessionFactory);
            return txManager;
        }

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

1. Spring 建议拦截器：

   @Aspect @配置 公共类 TxAdviceInterceptor {

   private static final String TX_METHOD_NAME = "*";
   
   @Value(value = "${tx-advice.timeout:-1}")
   private Integer txMethodTimeout = -1;
   
   private static final String AOP_POINTCUT_EXPRESSION =
                   "execution(* com.ptg.service..*.*(..))";
   
   @Autowired
   private PlatformTransactionManager transactionManager;
   
   @Bean
   public TransactionInterceptor txAdvice() {
       MatchAlwaysTransactionAttributeSource source = new MatchAlwaysTransactionAttributeSource();
       RuleBasedTransactionAttribute transactionAttribute = new RuleBasedTransactionAttribute();
       transactionAttribute.setName(TX_METHOD_NAME);
       transactionAttribute.setRollbackRules(
                       Collections.singletonList(new RollbackRuleAttribute(Exception.class)));
       transactionAttribute.setTimeout(txMethodTimeout);
       source.setTransactionAttribute(transactionAttribute);
       return new TransactionInterceptor(transactionManager, source);
   }
   
   @Bean
   public Advisor txAdviceAdvisor() {
       AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
       pointcut.setExpression(AOP_POINTCUT_EXPRESSION);
       return new DefaultPointcutAdvisor(pointcut, txAdvice());
   }
   

   }

2. 道：

   @Repository 公共抽象类 GenericDaoImpl{

   @Autowired
   private SessionFactory sessionFactory;
   
   @Override
   public void S save(S entity) {
       sessionFactory.save(entity);
   }
   

   }

DaoImpl：

@Repository
public class TagDaoImpl extends GenericDaoImpl{
}

@Repository
public class PostDaoImpl extends GenericDaoImpl{
}

4. 服务：

   @服务 公共类 PostServiceImpl{

   @Autowired
   private PostDao postDao;
   
   @Autowired
   private TagDao tagDao;
   
   public void merge(Post post){
       tagDao.save();
       postDao.save();
   }    
   

   }

如上代码，我想如果postDao.save出错，tagDao也是回滚。

Answer 1

我发现了问题。我的配置没有错。 问题是“只有未检查的异常（即 java.lang.RuntimeException 的子类）默认回滚。对于这种情况，抛出检查的异常，事务将被提交”。 我用 NullPointerException 错误测试了我的代码，因此事务没有回滚。

参考：https://www.catalysts.cc/wissenswertes/spring-transactional-rollback-on-checked-exceptions/

Answer 2

你试过@Transactional注解吗？