Spring CrudRepository delete() 什么都不做

Question

在单元测试期间，我试图通过 Spring 的 CrudRepository 从我的数据库中删除一个条目，但似乎什么也没发生。

实体：

@Entity @Table(name = "FACTION")
public class Faction implements Serializable
{
    private static final long serialVersionUID = 1L;

    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "ID", columnDefinition = "int", nullable = false, unique = true)
    private Integer id;

    public Integer getId()
    {
        return this.id;
    }
}

存储库：

public interface FactionDao extends CrudRepository<Faction, Integer>
{

}

我的测试课：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = Config.class)
@Sql({ "/delete-testData.sql", "/insert-testData.sql" })
public class TestFactionDao
{
    @Autowired
    private FactionDao dao;

    @Test
    public void testDelete()
    {
        System.out.println(this.dao.findOne(1));
        this.dao.delete(1);
        System.out.println(this.dao.findOne(1));
    }
}

弹簧配置：

@Configuration
@EnableJpaRepositories(basePackageClasses = Config.class)
@EnableTransactionManagement
public class Config
{
    @Bean
    public DataSource dataSource()
    {
        return new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.H2).build();
    }

    @Bean
    public PlatformTransactionManager transactionManager(DataSource pDataSource)
    {
        return new DataSourceTransactionManager(pDataSource);
    }

    @Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource pDataSource)
    {
        HibernateJpaVendorAdapter tJpaVendorAdapter = new HibernateJpaVendorAdapter();
        tJpaVendorAdapter.setDatabase(Database.H2);
        tJpaVendorAdapter.setGenerateDdl(true);
        tJpaVendorAdapter.setShowSql(true);
        LocalContainerEntityManagerFactoryBean tEntityManagerFactory = new LocalContainerEntityManagerFactoryBean();
        tEntityManagerFactory.setJpaVendorAdapter(tJpaVendorAdapter);
        tEntityManagerFactory.setDataSource(pDataSource);
        tEntityManagerFactory.setPackagesToScan(Config.class.getPackage().getName());
        return tEntityManagerFactory;
    }
}

sql 脚本：

-- delete-testData.sql

delete from FACTION;

-- insert-testData.sql

insert into FACTION (ID) values
(1);

以下是测试用例期间的控制台输出。如您所见，没有执行删除操作，我仍然可以读取刚刚删除的实体：

Hibernate: create table FACTION (ID int generated by default as identity, primary key (ID))
Hibernate: select faction0_.ID as ID1_3_0_ from FACTION faction0_ where faction0_.ID=?
de.iavra.data.Faction@1b97f47
Hibernate: select faction0_.ID as ID1_3_0_ from FACTION faction0_ where faction0_.ID=?
Hibernate: select faction0_.ID as ID1_3_0_ from FACTION faction0_ where faction0_.ID=?
de.iavra.data.Faction@17b8fa4

我尝试使用@Rollback(false) 注释我的测试方法，但它似乎没有任何区别。在 dao 上调用 flush() 会引发异常，指出没有待处理的更新。

Answer 1

我测试了您的代码，解决方案是将transactionManager 类型从PlatformTransactionManager 更改为JpaTransactionManager。 （我想可能 PlatformTransactionManager 只在函数结束时提交删除。）

所以代码是：

Config.java

@Bean
public JpaTransactionManager transactionManager(EntityManagerFactory emf) {
    return new JpaTransactionManager(emf);
}

@Bean
LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource pDataSource) {
     HibernateJpaVendorAdapter tJpaVendorAdapter = new HibernateJpaVendorAdapter();
     ...

Answer 2

您必须为update 和delete 操作添加事务。

public class FactionService {
    @Autowired
    private FactionDao dao;

    @Transactional
    public void delete(int id){
        dao.delete(id);
    }
}