在emedable webphere容器中的Hibernate找不到java： comp/webphere/ExtendedJTATransaction

Question

我有一个Java的EE应用程序，它使用Hibernate 4.2.7作为持久性提供程序，在可嵌入的WebSphere 8.0.0容器中执行JUnit测试。数据库访问在真实（即非嵌入式）WebSphere 8.0.0实例中运行良好。当使用OpenJPA而不是Hibernate运行时，单元测试确实有效。但是，使用Hibernate运行JUnit测试时，会出现以下异常：

CNTR0020E: EJB threw an unexpected (non-declared) exception during invocation of method "getEntity" on bean "BeanId(embeddable#classes#SomeBean, null)". Exception data: org.hibernate.service.jndi.JndiException: Unable to lookup JNDI name [java:comp/websphere/ExtendedJTATransaction]
    at org.hibernate.service.jndi.internal.JndiServiceImpl.locate(JndiServiceImpl.java:68)
    at org.hibernate.service.jta.platform.internal.WebSphereExtendedJtaPlatform$TransactionManagerAdapter$TransactionAdapter.(WebSphereExtendedJtaPlatform.java:156)
    at org.hibernate.service.jta.platform.internal.WebSphereExtendedJtaPlatform$TransactionManagerAdapter$TransactionAdapter.(WebSphereExtendedJtaPlatform.java:152)
    at org.hibernate.service.jta.platform.internal.WebSphereExtendedJtaPlatform$TransactionManagerAdapter.getTransaction(WebSphereExtendedJtaPlatform.java:124)
    at org.hibernate.service.jta.platform.internal.WebSphereExtendedJtaPlatform$TransactionManagerAdapter.getStatus(WebSphereExtendedJtaPlatform.java:119)
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:73)
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:115)
    at org.hibernate.service.jta.platform.internal.TransactionManagerBasedSynchronizationStrategy.canRegisterSynchronization(TransactionManagerBasedSynchronizationStrategy.java:56)
    ... stripped ...

WebSphereExtendedjTapPlatform的实现似乎正在尝试通过JNDI查找获取当前事务，但失败了，因为嵌入容器中不存在JNDI名称。这是从组织剪下来的。冬眠服务jta。站台内部的WebSphereExtendedjTapForm平台：

public class TransactionAdapter implements Transaction {

    private TransactionAdapter() {
        if ( extendedJTATransaction == null ) {
            extendedJTATransaction = jndiService().locate( "java:comp/websphere/ExtendedJTATransaction" );
        }
    }
... stripped ...

类ExtendedJtaTransaction本身确实存在于com内部的类路径上。国际商用机器公司ws。运行时。罐子

我们persistence.xml中的设置如下：

<persistence-unit name="BLA" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/BLA</jta-data-source>
<class>com.some.Entity</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
  <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />
  <property name="hibernate.archive.autodetection" value="class" />
  <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WebSphereExtendedJTATransactionLookup" />
  <property name="jta.UserTransaction" value="java:comp/UserTransaction" />
  <property name="hibernate.show_sql" value="true" />
  <property name="hibernate.format_sql" value="true" />
  <property name="hibernate.jdbc.fetch_size" value="100" />
  <property name="hibernate.temp.use_jdbc_metadata_defaults" value="false" />
</properties>

有人能解决这个问题吗？谢谢

Answer 1

事务策略配置

Hibernate需要配置两个基本部分，以便正确运行事务。第一，冬眠。交易factory_类定义事务控制，第二个定义hibernate。交易manager_lookup_类，定义事务同步的注册机制，以便在事务结束时通知持久性管理器需要将更改与数据库同步。对于事务控制，支持容器管理的配置和bean管理的配置。必须在Hibernate中设置以下属性。cfg。将Hibernate与WebSphere Application Server一起使用时的xml：

for container-managed transactions:

<property name="hibernate.transaction.factory_class">
    org.hibernate.transaction.CMTTransactionFactory
</property>
<property name="hibernate.transaction.manager_lookup_class">
    org.hibernate.transaction.WebSphereExtendedJTATransactionLookup
</property>

for bean-managed transactions:

<property name="hibernate.transaction.factory_class">
    org.hibernate.transaction.JTATransactionFactory
</property>
<property name="hibernate.transaction.manager_lookup_class">
    org.hibernate.transaction.WebSphereExtendedJTATransactionLookup
</property>
<property name="jta.UserTransaction">
    java:comp/UserTransaction
</property >

jta。UserTransaction属性将工厂类配置为从WebSphere容器获取UserTransaction对象实例的实例。

冬眠。交易WebSphere Application Server V6在WebSphere平台上支持manager_lookup_类属性。X和稍后，以及WebSphere业务集成服务器基础V5。1及更高版本。此属性配置Hibernate以使用在WebSphere业务集成服务器基金会V5中引入的ExplutJavaTraseAct接口。1和WebSphere Application Server V6。0.WebSphere ExtendedJTATransaction接口建立了一个模式，该模式通过JTA 1.1规范在JavaEE5中正式化。