DAO后的异常-使用WebSphere-8 / Spring 4/ Hibernate 4.3进行操作

Question

我的WebSphere 8驱动portlet在JPA上使用Spring4和Hibernate 4.3。我有一个JTA数据源。这是我的设计：

persistence.xml

  <?xml version="1.0" encoding="UTF-8"?>
  <persistence xmlns="http://java.sun.com/xml/ns/persistence"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0"
               xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
  >
      <persistence-unit name="myUnit" transaction-type="JTA">
          <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
          <jta-data-source>jdbc/mydb</jta-data-source>
          <properties>
              <property name="hibernate.transaction.jta.platform" value="org.hibernate.engine.transaction.jta.platform.internal.WebSphereExtendedJtaPlatform" />
              <property name="hibernate.transaction.factory_class" value="org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory" />
              <property name="hibernate.dialect" value="org.hibernate.dialect.DB2Dialect" />
          </properties>
      </persistence-unit>
  </persistence>

my-portlet.xml

<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager" class="org.springframework.transaction.jta.WebSphereUowTransactionManager" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="myUnit" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="databasePlatform" value="org.hibernate.dialect.DB2Dialect" />
            <property name="showSql" value="true" />
        </bean>
    </property>
</bean>

当调用我的DAO-方法时，会引发异常：

00000090 RegisteredSyn E   WTRN0074E: Exception caught from before_completion synchronization operation: java.lang.IncompatibleClassChangeError
   at com.ibm.ws.uow.ComponentContextSynchronizationWrapper.beforeCompletion(ComponentContextSynchronizationWrapper.java:65)

和

(... servlet and portlet specific exceptions ...)
Caused by: org.springframework.transaction.TransactionSystemException: UOWManager transaction processing failed; nested exception is com.ibm.wsspi.uow.UOWException: javax.transaction.RollbackException
(...)
Caused by: java.lang.IncompatibleClassChangeError

这是我的刀课：

  @Repository("myDao")
  @SuppressWarnings("unchecked")
  public class HibernateMyEntityDao implements MyEntityDao
  {
     @PersistenceContext(unitName = "myUnit")
     private EntityManager entityManager;

     public Session getSession()
     {
        return entityManager.unwrap(Session.class);
     }

     @Transactional
     public List<MyEntity> findActive()
     {
        Calendar date = Calendar.getInstance();
        Criteria crit = getSession().createCriteria(MyEntity.class);
        crit.setFirstResult(0);
        crit.setFetchSize(10);
        crit.add(Restrictions.le("start", date));
        crit.add(Restrictions.gt("end", date));
        return crit.list();
     }
  }

我在这里做错什么了？

Answer 1

IncompatibleClassChangeError通常表示依赖关系版本不正确。您可以阅读更多关于它的这里和这里。

websphere 8、spring 4和hibernate 4.3的组合可能互不兼容。我猜是关于hibernate 4.3和websphere 8不兼容。你试过使用稍早一些的spring和hibernate版本吗？