Question

我正在使用Spring及其spring-data-jpa:1.7.0.RELEASE和hibernate-jpa-2.1-api:1.0.0.Final。我的数据库是MySQL。在集成测试中，当我保存实体时，entityRepository.save()方法不返回它的更新版本（例如填充自动递增的id），因此我可以看到它在数据库中。

这是我的配置类：

//@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "core.repository")
@Configuration
@PropertySource("classpath:application.properties")
public class JPAConfiguration {

    @Autowired
    private Environment env;

    private
    @Value("${db.driverClassName}")
    String driverClassName;
    private
    @Value("${db.url}")
    String url;
    private
    @Value("${db.username}")
    String user;
    private
    @Value("${db.password}")
    String password;

    @Bean
    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
        return new PropertySourcesPlaceholderConfigurer();

    }

    @Bean
    public DataSource dataSource() {

        DriverManagerDataSource dataSource = new DriverManagerDataSource();

        dataSource.setDriverClassName(driverClassName);
        dataSource.setUrl(url);
        dataSource.setUsername(user);
        dataSource.setPassword(password);
        return dataSource;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {

        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setGenerateDdl(true);
        vendorAdapter.setDatabasePlatform(env.getProperty("hibernate.dialect"));

        final LocalContainerEntityManagerFactoryBean em =
                new LocalContainerEntityManagerFactoryBean();

        em.setJpaVendorAdapter(vendorAdapter);
        em.setPackagesToScan(new String[]{"core.persistence"});
        em.setDataSource(dataSource());
        em.afterPropertiesSet();


        return em;
    }

    @Bean
    public EntityManager entityManager(EntityManagerFactory entityManagerFactory) {
        return entityManagerFactory.createEntityManager();
    }

    @Bean
    public JpaTransactionManager transactionManager(final EntityManagerFactory emf) {
        final JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(emf);
        return transactionManager;
    }

    @Bean
    public HibernateExceptionTranslator hibernateExceptionTranslator() {
        return new HibernateExceptionTranslator();
    }
}

这是我的考试班：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {JPAConfiguration.class})
//@Transactional
//@TransactionConfiguration(defaultRollback = true)
public class AgencyRepositoryIntegrationTests {

    @Autowired
    AgencyRepository agencyRepository;

    @Test
    public void testThatAgencyIsSavedIntoRepoWorks() throws Exception {

        Agency c = DomainTestData.getAgency();
        Agency d = agencyRepository.save(c);
        // here d equals to c but both have id 0.

        Collection<Agency> results = Lists.newArrayList(agencyRepository.findAll());
        //here results != null and it does contain the agency object.
        assertNotNull(results);
    }
}

由于研究了stackoverflow中的其他问题，我最终评论了Transactional注释（在测试和配置类中），但它没有用。

由于

Answer 1

使用saveAndFlush方法确保实体位于数据库中。

如果出现NoTransactionException，请务必将@Transactional添加到您的方法中。

Answer 2

尝试取消注释@Transactional注释并运行。我无法在您的代码段中看到任何明显的问题，但我内心有一些东西（并且它不是饥饿），说您的交易划分不正确。之前我遇到过类似的问题，只是@transaction注释丢失或交易配置错误。

CrudRepository保存方法不返回更新的实体

2 个答案: