如何使用Spring Data JPA保留JSR-310类型？

Question

我正在尝试将Spring Data JPA 1.8与Java 8 Date/Time API JSR-310一起使用.

一切似乎都有效,直到我试图让所有车辆在两个LocalDateTimes之间.返回的实体数量似乎只与它应该的数量松散相关.

实体

@Repository
public interface VehicleRepository extends JpaRepository<Vehicle, Long> {

    List<Vehicle> findByDateTimeBetween(LocalDateTime begin, LocalDateTime end);

}

知识库

@Entity
@Table(name = "VEHICLE")
public class Vehicle implements Serializable {

  private static final long serialVersionUID = 1L;

  @Id
  @Column(name = "IDX", nullable = false, unique = true)
  @GeneratedValue(strategy = GenerationType.AUTO)
  private long vehicleId;

  @Column(name = "DATE_TIME", nullable = false)
  private LocalDateTime dateTime = LocalDateTime.now();

  // Getters and Setters

}

相关依赖

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
        <version>1.8.0.RELEASE</version>
    </dependency>
    <dependency> 
        <groupId>org.springframework</groupId> 
        <artifactId>spring-aspects</artifactId> 
        <version>4.0.9.RELEASE</version> 
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.3.8.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>4.3.8.Final</version>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.4.186</version>
    </dependency>
    <dependency>
        <groupId>com.zaxxer</groupId>
        <artifactId>HikariCP</artifactId>
        <version>2.3.5</version>
    </dependency>

失败的测试示例

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath*:applicationContextTesting.xml"})
@Transactional
public class VehicleRepositoryTest {

    @Autowired
    private VehicleRepository vehicleRepository;

    @Test
    public void testVehicleBetween() {
        // Given
        Vehicle vehicleMarch1Twelve = new Vehicle();
        Vehicle vehicleMarch1Eighteen = new Vehicle();
        Vehicle vehicleMarch2Five = new Vehicle();
        Vehicle vehicleMarch2Six = new Vehicle();
        LocalDateTime march1Twelve = LocalDateTime.of(2015, Month.MARCH, 1, 12, 0);
        LocalDateTime march1Eighteen = LocalDateTime.of(2015, Month.MARCH, 1, 18, 0);
        LocalDateTime march2Five = LocalDateTime.of(2015, Month.MARCH, 2, 5, 0);
        LocalDateTime march2Six = LocalDateTime.of(2015, Month.MARCH, 2, 6, 0);
        vehicleMarch1Twelve.setDateTime(march1Twelve);
        vehicleMarch1Eighteen.setDateTime(march1Eighteen);
        vehicleMarch2Five.setDateTime(march2Five);
        vehicleMarch2Six.setDateTime(march2Six);

        vehicleRepository.save(vehicleMarch1Twelve);
        vehicleRepository.save(vehicleMarch1Eighteen);
        vehicleRepository.save(vehicleMarch2Five);
        vehicleRepository.save(vehicleMarch2Six);
        vehicleRepository.flush();

        // when
        List<Vehicle> allVehicles = vehicleRepository.findByDateTimeBetween(
            march1Twelve,
            march2Six);
        List<Vehicle> allVehicles2 = vehicleRepository.findByDateTimeBetween(
            march1Twelve.minusMinutes(2),
            march2Six.plusMinutes(2));
        List<Vehicle> threeVehicles = vehicleRepository.findByDateTimeBetween(
            march1Twelve.plusMinutes(2),
            march2Six);
        List<Vehicle> twoVehicles = vehicleRepository.findByDateTimeBetween(
            march1Twelve.plusMinutes(2),
            march2Six.minusMinutes(2));
        List<Vehicle> oneVehicles = vehicleRepository.findByDateTimeBetween(
            march1Twelve.plusMinutes(2),
            march2Six.minusHours(3));

        // then
        Assert.assertTrue("size was " + allVehicles.size(), allVehicles.size() == 4);
        Assert.assertTrue("size was " + allVehicles2.size(), allVehicles2.size() == 4);
        Assert.assertTrue("size was " + threeVehicles.size(), threeVehicles.size() == 3);
        Assert.assertTrue("size was " + twoVehicles.size(), twoVehicles.size() == 2);
        Assert.assertTrue("size was " + oneVehicles.size(), oneVehicles.size() == 1);
        Assert.assertTrue(oneVehicles.get(0).getDateTime().equals(march1Eighteen));
    }

}

第一个List包含2个元素(应该是4个).所有其他List包含0个元素!鉴于第二个请求的时间跨度比第一个要大.

有人能告诉我我做错了什么吗？

---

编辑

谢谢@Oliver Gierke的快速回答.我能够通过将"org.springframework.data.jpa.convert.threeten"添加到packagesToScan属性来解决此问题.现在它似乎正常工作.

这里的参考是我工作的数据库相关(测试)配置.

<bean id="hikariConfig" class="com.zaxxer.hikari.HikariConfig">
    <property name="driverClassName" value="org.h2.Driver"/>
    <property name="jdbcUrl" value="jdbc:h2:mem:testing"/>
    <property name="username" value="interface"/>
    <property name="password" value=""/>
    <property name="connectionTestQuery" value="SELECT 1" />
</bean>

<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource">
    <constructor-arg index="0" ref="hikariConfig"/>
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>

<tx:annotation-driven/>

<bean id="hibernateJpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter"/>
    <property name="packagesToScan" value="com.company.project.domain,org.springframework.data.jpa.convert.threeten"/>
    <property name="jpaProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop>
            <prop key="hibernate.hbm2ddl.auto">update</prop>
        </props>
    </property>
</bean>

<jpa:repositories base-package="com.company.project.dao" transaction-manager-ref="transactionManager"
                  entity-manager-factory-ref="entityManagerFactory"/>

Answer 1

更新:如果您需要保持Hibernate版本<5.0,则以下答案有效.Hibernate 5.0支持开箱即用的持久化JSR-310日期/时间类型.即如果您使用的是Hibernate 5.0或更新版本,Adam的答案就是要走的路.其他人,请继续阅读.

在没有广泛使用的JPA提供程序的情况下,根本原因实际上支持JSR-310类型的开箱即用.但是,从Spring Data JPA 1.8.0开始,我们发布了JPA 2.0转换器,它将非时区划分的JSR-310类型转换为旧版本,Date以便它们可以保持原样.

要org.springframework.data.jpa.convert.threeten.Jsr310JpaConverters使其正常工作,只需将您的提供程序注册为托管JPA类之一.有几种方法可以做到这一点:在一个非常标准的JPA设置中,您可以在其中列出它persistence.xml.在LocalContainerEntityManagerFactoryBean基础设置中,您只需将类的包添加到packagesToScan属性即可.如果您正在使用Spring Boot,那么将该类添加到@EntityScan注释中就可以了.

后者在博客文章中有更详细的描述,其中涵盖了名为Fowler的Spring Data发布列车的新功能

Answer 2

当使用Hibernate> = 5.0,<5.2时,你可以进入

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-java8</artifactId>
    <version>${hibernate.version}</version>
</dependency>

在你的类路径上,它将自动注册Type对应于JSR310类的s.

(感谢@AbhijitSarkar)从5.2开始,"hibernate-java8模块已合并到hibernate-core中,现在支持Java 8日期/时间类型." (迁移指南5.2)

Answer 3

我花了很长时间才弄明白如何LocalDateTime在我的JPA实体中使用它.我是最新的Spring启动版本.并在ConversionServices中调试了很多.

Oliver Gierkes的回答帮助我做了最后的工作设置:

将Spring-data-jpa 1.8.0或更高版本添加到依赖关系管理中

compile("org.springframework.data:spring-data-jpa:1.8.2.RELEASE")

为Jsr310JpaConverters +(至少)为您的Application.class启用@EntityScan

@EntityScan(
  basePackageClasses = { Application.class, Jsr310JpaConverters.class }
)
@SpringBootApplication
class Application { … }