JPA 2.1、Hibernate 4.3、Spring 4.0 数据未保存到数据库答案

【问题标题】：JPA 2.1, Hibernate 4.3, Spring 4.0 data not saving to databaseJPA 2.1、Hibernate 4.3、Spring 4.0 数据未保存到数据库
【发布时间】：2014-04-11 14:34:07
【问题描述】：

我有一个使用 spring 4.0、JPA 2.1、Hibernate 4.3.5、Glassfish 4.0 和 JTA 事务管理器的应用程序。
在我将 JPA 从 2.0 更新到 2.1 并从 Hibernate 4.2.x 更新到 4.3 之后，尽管日志看起来没问题，但数据不再保存到数据库中。
所以这些是可能的配置文件：实体管理器

<bean id="emfCC" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="CCDS" />
<property name="packagesToScan" value="com.videanuadrian.core.entity" />
<property name="jpaVendorAdapter">
    <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
        <property name="databasePlatform" value="org.hibernate.dialect.PostgreSQLDialect" />            
    </bean>
</property>

<property name="jpaProperties">
    <props>            
        <prop key="hibernate.connection.autocommit">false </prop>
        <prop key="hibernate.show_sql">false</prop> 
        <prop key="hibernate.format_sql">false</prop>
        <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
        <prop key="hibernate.transaction.manager_lookup_class">org.hibernate.transaction.SunONETransactionManagerLookup</prop>
        <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory</prop>                   
        <prop key="hibernate.cache.use_query_cache">true</prop>
        <prop key="hibernate.cache.use_second_level_cache">true</prop>
        <prop key="hibernate.cache.provider_configuration_file_resource_path">ehcache.xml</prop>
        <prop key="hibernate.cache.provider_class">org.hibernate.cache.ehcache.EhCacheProvider</prop>
        <prop key="hibernate.generate_statistics">false</prop>
     </props>
  </property>

我的交易经理：

<bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
   <property name="transactionManagerName" value="java:appserver/TransactionManager"/>
</bean>

<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes >        
        <tx:method name="get*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="true"/>         
        <tx:method name="is*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="true"/>
        <tx:method name="*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
    </tx:attributes>    
</tx:advice>

<aop:aspectj-autoproxy/>
<aop:config>  
  <aop:pointcut id="cs" expression="execution(* com.videanuadrian.contactcenter.services..*.*(..))"/>
  <aop:advisor advice-ref="txAdvice" pointcut-ref="cs" />
</aop:config>

<aop:config>  
  <aop:pointcut id="pcCore" expression="execution(* com.videanuadrian.core.impl.services..*.*(..))"/>
  <aop:advisor advice-ref="txAdvice" pointcut-ref="pcCore"/>
</aop:config>
<jee:jndi-lookup id="CCDS" jndi-name="jdbc/contactCenter"/>

我所有的 DAO 类都继承了这个类：

public abstract class GenericDAOImpl<T> implements GenericDAO<T> {

    @PersistenceContext(type = PersistenceContextType.TRANSACTION,synchronization=SynchronizationType.SYNCHRONIZED)
    protected EntityManager em;

    private Class<T> type;

    protected static final Logger logger = Logger.getLogger(GenericDAOImpl.class);

    public GenericDAOImpl() {
        Type t = getClass().getGenericSuperclass();
        ParameterizedType pt = (ParameterizedType) t;
        type = (Class) pt.getActualTypeArguments()[0];
    }

    public EntityManager getEm() {
        return em;
    }

    public void setEm(EntityManager em) {
        this.em = em;
    }

    @Override
    public T create(final T t) {
        this.em.persist(t);
        return t;
    }

    @Override
    public void delete(final Object id) {
        this.em.remove(this.em.getReference(type, id));
    }

    @Override
    public T find(final Object id) {
        return (T) this.em.find(type, id);
    }

    @Override
    public T update(final T t) {
        return this.em.merge(t);            
    }

    @Override
    public void flush(){
        this.em.flush();
    }
}

这是我的服务类：

@Named
public class ApplicationServiceImpl implements ApplicationService {

@Inject
private ApplicationDAO applicationDAO;


@Override
public Long updateApplication(Application app) {

    if (app == null)
        return null;

    applicationDAO.update(app);

    return app.getId();

}
}

在我点击 updateApplication 方法后，日志是正确的，一切似乎都正常，但更新没有持久化到数据库。起初这似乎事务没有或事务没有创建，但这里是日志：

AbstractPlatformTransactionManager.java:367) - Creating new transaction with name [com.videanuadrian.core.impl.services.ApplicationServiceImpl.updateApplication]: PROPAGATION_REQUIRES_NEW,ISOLATION_DEFAULT,-java.lang.Exception
(TransactionSynchronizationManager.java:272) - Initializing transaction synchronization
(TransactionAspectSupport.java:447) - Getting transaction for [com.videanuadrian.core.impl.services.ApplicationServiceImpl.updateApplication]
(EntityManagerFactoryUtils.java:272) - Opening JPA EntityManager
(EntityManagerFactoryUtils.java:290) - Registering transaction synchronization for JPA EntityManager
(TransactionSynchronizationManager.java:193) - Bound value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] to thread [http-listener-1(3)]
(AbstractBeanFactory.java:249) - Returning cached instance of singleton bean 'auditLogAspectImpl'
(AbstractPlatformTransactionManager.java:472) - Participating in existing transaction
(TransactionAspectSupport.java:447) - Getting transaction for [com.videanuadrian.core.impl.services.UserServiceImpl.getUser]
(TransactionSynchronizationManager.java:140) - Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] bound to thread [http-listener-1(3)]
(TransactionSynchronizationManager.java:140) - Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] bound to thread [http-listener-1(3)]
(TransactionAspectSupport.java:476) - Completing transaction for [com.videanuadrian.core.impl.services.UserServiceImpl.getUser]
(AbstractPlatformTransactionManager.java:472) - Participating in existing transaction
(TransactionAspectSupport.java:447) - Getting transaction for [com.videanuadrian.core.impl.services.AuditLogServiceImpl.addAuditLogEvent]
(TransactionSynchronizationManager.java:140) - Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] bound to thread [http-listener-1(3)]
(TransactionSynchronizationManager.java:140) - Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] bound to thread [http-listener-1(3)]
(TransactionSynchronizationManager.java:140) - Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] bound to thread [http-listener-1(3)]
(TransactionSynchronizationManager.java:140) - Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] bound to thread [http-listener-1(3)]
(TransactionAspectSupport.java:476) - Completing transaction for [com.videanuadrian.core.impl.services.AuditLogServiceImpl.addAuditLogEvent]
(TransactionAspectSupport.java:476) - Completing transaction for [com.videanuadrian.core.impl.services.ApplicationServiceImpl.updateApplication]
(AbstractPlatformTransactionManager.java:926) - Triggering beforeCommit synchronization
(AbstractPlatformTransactionManager.java:939) - Triggering beforeCompletion synchronization
(TransactionSynchronizationManager.java:243) - Removed value [org.springframework.orm.jpa.EntityManagerHolder@48ff5d9c] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@e9c2514] from thread [http-listener-1(3)]
(EntityManagerFactoryUtils.java:435) - Closing JPA EntityManager
(AbstractPlatformTransactionManager.java:755) - Initiating transaction commit
(AbstractPlatformTransactionManager.java:952) - Triggering afterCommit synchronization
(AbstractPlatformTransactionManager.java:968) - Triggering afterCompletion synchronization
(TransactionSynchronizationManager.java:331) - Clearing transaction synchronization
(RequestLoggingPhaseListener.java:42) - Entering JSF Phase: RESTORE_VIEW 1
(RequestLoggingPhaseListener.java:42) - Entering JSF Phase: RENDER_RESPONSE 6

如果我启用 sql_log，我将看不到正在执行的更新语句.... 我怀疑 JPA 2.1 之间的任何东西我的 entityManager、事务管理器，但我不知道它是什么...
有什么想法吗？

【问题讨论】：

您好 Andei，我已经尝试过了，唯一的例外是没有正在进行的交易。此外，如果我将 MANDATORY 置于 updateApplication() 的传播级别，我会得到相同的异常。但只要我在日志中有这一行：AbstractPlatformTransactionManager.java:367) - 创建名称为 [com.videanuadrian. core.impl.services.ApplicationServiceImpl.updateApplication]: PROPAGATION_REQUIRES_NEW,ISOLATION_DEFAULT,-java.lang.Exception
我没有 persitence.xml 文件，因为我读到如果您将 packagesToScan 放入并将所有属性从 persitence.xml 移动到 entityManager Bean，您可以在没有它的情况下“生存”。我不得不说，当我使用 jpa2.0 和 hibernate 4.2 时，我有 persitence.xml 文件。
我没有尝试使用@Transactional，因为事务分界是通过AOP 实现的。因此，对于包中的每个方法：应该打开一个事务。而且，奇怪的是，在日志中似乎事务是打开的，但是......
为了让@Transactional 工作，我认为我的xml 文件中必须有。
我只能说明问题是什么，不知道怎么解决（没有spring经验）：entitymanager没有自动加入JTA事务。

标签： java spring hibernate jpa jta

【解决方案1】：

我应用的解决方案是取消 persistence.xml 文件并在其中添加属性：

<property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform" />

发现于： https://coderwall.com/p/e5fxrw
我还从我的 EntityManager 定义中删除了 packagesToScan。

【讨论】：

【解决方案2】：

在将 Hibernate 从 4.2.x 更新到 4.3.x 后，我遇到了同样的问题。

将“hibernate.transaction.flush_before_completion”属性设置为 true 为我解决了这个问题。

<prop key="hibernate.transaction.flush_before_completion">true</prop>

https://docs.jboss.org/hibernate/orm/4.3/manual/en-US/html_single/
“如果启用，会话将在事务完成之前的阶段自动刷新。首选内置和自动会话上下文管理，请参阅第 2.5 节，“上下文会话”。

【讨论】：