同时使用Hibernate和Spring数据jpa?

时间:2014-02-10 07:57:12

标签: java spring hibernate jpa spring-data

是否可以使用Spring Data JPA(由Hibernate作为JPA提供程序支持)并同时直接使用Hibernate?

问题是当我使用JpaTransactionManager时,我无法使用org.hibernate.HibernateException: No Session found for current thread检索当前会话。当我切换到HibernateTransaction管理器时,JPA存储库无法提交更改。

这是我的Spring上下文的一部分(使用该上下文,我无法使用直接的Hibernate调用):

<jee:jndi-lookup id="dataSource" jndi-name="jdbc/IPGCONF"/>

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
      p:dataSource-ref="dataSource">
    <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
</bean>

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="entityManagerFactory"/>
    <property name="dataSource" ref="dataSource"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
    </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory"/>
    <property name="dataSource" ref="dataSource"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>

<jpa:repositories base-package="com.satgate"/>

hibernate存储库示例:

public Collection<Layer> listCurrent(Carrier carrier) {
    Criteria query = sessionFactory.getCurrentSession()
                    .createCriteria(Layer.class)
                    .add(Restrictions.eq("carrier", carrier));
    query.createCriteria("bitrate")
            .addOrder(Order.desc("bitrate"))
            .add(Restrictions.eq("symbolrate", carrier.getSymbolrate()));
    return query.list();
}

Spring数据存储库定义示例:

public interface BitrateRepository extends PagingAndSortingRepository<Bitrate, Long> { }

软件版本:

<org.springframework.version>4.0.0.RELEASE</org.springframework.version>
<org.springframework.data.version>1.4.3.RELEASE</org.springframework.data.version>
<hibernate.version>4.3.0.Final</hibernate.version>

所以,问题是 - 是否可以在同一个事务中使用(由@Transactional注释指定)Spring JPA存储库和直接Hibernate调用以及如何实现它?

3 个答案:

答案 0 :(得分:25)

您需要一种配置方式,现在正在配置Hibernate和JPA。您应该使用JPA进行配置,因此请删除hibernate设置。

您正在使用Hibernate4,因此您可以利用Spring的HibernateJpaSessionFactoryBean,而不是那么着名。如果您需要访问SessionFactory(我认为您需要)。

应用后,您的配置就会像这样。

<bean id="sessionFactory" class="org.springframework.orm.jpa.vendor.HibernateJpaSessionFactoryBean">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="entityManagerFactory"/>
    <property name="dataSource" ref="dataSource"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
    </property>
</bean>

我建议您只使用此作为中间解决方案,同时重构您的应用程序以使用普通的JPA api。我不建议混合两种策略。

答案 1 :(得分:19)

使用EntityManager.unwrap(Session.class)来获取Hibernate会话并从Session对象中检索会话工厂,而不是创建SessionFactory。

您也可以使用EntityManagerFactory.unwrap(SessionFactory.class)直接获取Hibernate SessionFactory。

答案 2 :(得分:1)

这就是我所做的,并且效果很好: 一个数据源,两个事务管理器。
数据源bean:

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <!-- bulabula... -->
</bean>

对于基于Hibernate XML的配置:

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="mappingLocations" value="#{propertyUtils.getList('hibernate.hbm')}"/>
    <property name="hibernateProperties">
        <value>
            <!-- bulabulabula... -->
        </value>
    </property>
</bean>

<bean id="transactionManager" primary="true" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory"/>
</bean>

对于基于java的spring-data-jpa配置:

@Configuration
@EnableJpaRepositories(basePackages = {"org.sharder.core.repository"}, 
transactionManagerRef = "jpaTransactionManager")
@EnableTransactionManagement
public class JpaConfig {
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(ComboPooledDataSource comboPooledDataSource) {
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
    vendorAdapter.setDatabasePlatform("org.hibernate.dialect.MySQLDialect");
    factory.setJpaVendorAdapter(vendorAdapter);
    factory.setPackagesToScan("org.sharder.core.entity");
    factory.setDataSource(comboPooledDataSource);
    factory.setJpaProperties(getHibernateProperties());
    return factory;
}

@Bean(name = "jpaTransactionManager")
public PlatformTransactionManager jpaTransactionManager(EntityManagerFactory entityManagerFactory) {
    JpaTransactionManager txManager = new JpaTransactionManager();
    txManager.setEntityManagerFactory(entityManagerFactory);
    return txManager;
}

private Properties getHibernateProperties() {
    Properties properties = new Properties();
    properties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");
    properties.setProperty("hibernate.cache.region.factory_class", "org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory");
    properties.setProperty("hibernate.cache.use_query_cache", "true");
    properties.setProperty("hibernate.cache.use_second_level_cache", "true");
    properties.setProperty("hibernate.cache.use_structured_entries", "true");
    properties.setProperty("hibernate.format_sql", "true");
    properties.setProperty("hibernate.show_sql", "true");
    properties.setProperty("hibernate.use_sql_comments", "true");
    properties.setProperty("hibernate.query.substitutions", "true 1, false 0");
    properties.setProperty("hibernate.jdbc.fetch_size", "20");
    properties.setProperty("hibernate.connection.autocommit", "false");
    properties.setProperty("hibernate.connection.release_mode", "auto");
    return properties;
}

}

请注意,transactionManagerRef = "jpaTransactionManager"设置要与存储库一起使用的JpaTransactionManager。 Spring Data JPA namespace attributes