Spring MVC中的Hibernate事务通知

Question

我的项目使用的是Spring MVC4、Hibernate5。我已经用通知拦截器配置了hibernate事务，但它没有像我希望的那样回滚。请帮帮我，我的配置有什么问题？

    @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();
        }
    }

@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());
}

}

道：

@Autowired
private SessionFactory sessionFactory;

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

@Repository
public class TagDaoImpl extends GenericDaoImpl{
}

@Repository
public class PostDaoImpl extends GenericDaoImpl{
}

@Autowired
private PostDao postDao;

@Autowired
private TagDao tagDao;

public void merge(Post post){
    tagDao.save();
    postDao.save();
}    

}

正如上面的代码，我想如果postdao.save是error，tagDao也是rollback。

Answer 1

我已经发现问题了。我的配置没有错。问题是“默认情况下，只有未检查的异常（即java.lang.RuntimeException的子类）被回滚。如果抛出检查的异常，事务将被提交”。我已经用NullPointerException错误测试了我代码，因此事务没有回滚。

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