带有 JPA 的 Spring Data 不会在出错时回滚事务

Question

我们为 JPA 配置了 Spring Data。服务事务方法不会因错误（例如 DB ConstraintViolationException）而回滚。

我能找到的最接近的是这个 （事务不回滚）Spring-data、JTA、JPA、Wildfly10 但我们没有任何 XML 配置，我们所有的配置都是基于 Java 的。

本质上，一个服务方法看起来像这样：没有错误被捕获，一切都被抛出。

@Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class, readOnly = false)
public void insertEvent() throws Exception {
     // Part 1
     EventsT event = new EventsT(); 
     // populate it..
     eventsDAO.save(event);

     // Part 2 - ERROR HAPPENS HERE (Constraint Violation Exception)
     AnswersT answer = new AnswersT();
     // populate it..
     answersDAO.save(answer);   
}

第 2 部分失败。但是在错误并返回之后，我看到事件（第 1 部分）仍然填充在数据库中。

我们还尝试了@Transactional 的各种组合，但没有任何效果：

@Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class, readOnly = false)
@Transactional(readOnly = false)
@Transactional(propagation = Propagation.REQUIRED, rollbackFor = ConstraintViolationException.class, readOnly = false)

Spring Data CRUD DAO 接口：

@Repository
public interface EventsDAO extends JpaRepository<EventsT, Integer> {

}

@Repository
public interface AnswersDAO extends JpaRepository<AnswersT, Integer> {

}

Jpa配置：

@Configuration
@EnableJpaRepositories(basePackages = "com.myapp.dao")
@PropertySource({ "file:${conf.dir}/myapp/db-connection.properties" })
public class JpaConfig {

    @Value("${jdbc.datasource}")
    private String dataSourceName;

    @Bean
    public Map<String, Object> jpaProperties() {
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("hibernate.dialect", PostgreSQL95Dialect.class.getName());
        //props.put("hibernate.cache.provider_class", HashtableCacheProvider.class.getName());
        return props;
    }

    @Bean
    public JpaVendorAdapter jpaVendorAdapter() {
        HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
        hibernateJpaVendorAdapter.setShowSql(true);
        hibernateJpaVendorAdapter.setGenerateDdl(true);
        hibernateJpaVendorAdapter.setDatabase(Database.POSTGRESQL);
        return hibernateJpaVendorAdapter;
    }

    @Bean
    public PlatformTransactionManager transactionManager() throws NamingException {
        return new JpaTransactionManager( entityManagerFactory().getObject() );
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws NamingException {
        LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean();
        lef.setDataSource(dataSource());
        lef.setJpaPropertyMap(this.jpaProperties());
        lef.setJpaVendorAdapter(this.jpaVendorAdapter());
        lef.setPackagesToScan("com.myapp.domain", "com.myapp.dao");
        return lef;
    }

    @Bean
    public DataSource dataSource() throws NamingException {
        return (DataSource) new JndiTemplate().lookup(dataSourceName);
    }   

}

Spring Data 和 JPA 是否存在任何事务回滚问题？

Answer 1

不管你信不信，我们已经修复了它。解决方案分为两部分：

1)@EnableTransactionManagement按照 ledniov 的描述添加到 JpaConfig，但仅此还不够；

2）同样在JpaConfig中entityManagerFactory()，将Service类包添加到如下setPackagesToScan。以前，域对象包存在，但服务对象包不存在。我们添加了"myapp.service"第二个包。

@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws NamingException {
    LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean();
    lef.setDataSource(dataSource());
    lef.setJpaPropertyMap(this.jpaProperties());
    lef.setJpaVendorAdapter(this.jpaVendorAdapter());
    lef.setPackagesToScan("myapp.domain", "myapp.service"); //NOTE: Service was missing
    return lef;
}