运行 TestCases 时出现 Hibernate JPA Transaction not active 错误，但在主类中执行时工作正常答案

【问题标题】：Hibernate JPA Transaction not active error while running TestCases but works fine when executed in main Class运行 TestCases 时出现 Hibernate JPA Transaction not active 错误，但在主类中执行时工作正常
【发布时间】：2014-09-30 13:30:00
【问题描述】：

我正在尝试使用 jpa 持久性以及通过 EntityManager 的 Guice 注入在 Hibernate 中插入一个实体对象。当我尝试使用 oject 条目反映在我的数据库中的主类插入对象时，它工作正常。但是当我执行我的 Junit testCases 时，它向我显示错误：“java.lang.IllegalStateException: Transaction not active”，而插入 db Remaining 方法正常工作。

============== AbstractHibernateRepository<T>  Class==================
@Inject
private EntityManager em;


public AbstractHibernateRepository(Class<T> entityClass) {
    this.entityClass = entityClass;
}

protected EntityManager getEntityManager() {
    return this.em;
}



@Transactional
    public T create(T entity) {
        EntityManager entityManager = getEntityManager();
        if (!entityManager.getTransaction().isActive())
            entityManager.getTransaction().begin();
        try {
            entityManager.persist(entity);
            if (entityManager.getTransaction().isActive()){
                entityManager.getTransaction().commit();

            }
            else
                entityManager.flush();
        } catch (Exception e) {
            System.out.println("======>>>>>");
            if (entityManager.getTransaction().isActive())
                entityManager.getTransaction().rollback();
            e.printStackTrace();
        }
        return entity;
    }
================================
==================  AvailableServerRepository.class ==============
public class AvailableServerRepository extends
    AbstractHibernateRepository<AvailableServerEntity> implements
    IAvailableServerRepository {

@Override
public AvailableServerEntity insertAvailableServer(
        AvailableServerEntity availableServer) {
    return create(availableServer);

}

}

====================================

public class AvailableServerRepositoryTest {
private static Injector injector = null;
private static PersistenceInitializer initializer = null;

@BeforeClass
public static void environmentSetup() {
    injector = Guice.createInjector(new MainModule(), new JpaPersistModule(
            "proplet-indexer"));
    initializer = injector.getInstance(PersistenceInitializer.class);
    initializer.startServer();
}

@AfterClass
public static void environmentClean() {
    if(initializer != null)
    initializer.stopServer();
}


/**
 * Test of insertAvailableServer method, of class AvailableServerRepository.
 */
@Test
public void testInsertAvailableServer() {
    AvailableServerRepository availableServerRepository = injector
            .getInstance(AvailableServerRepository.class);
    AvailableServerEntity availableServer = createAvailableServer();
                     assertNotNull(availableServerRepository.insertAvailableServer(availableServer));
}

====================================




Error while it throws while running testCases is 

java.lang.IllegalStateException: Transaction not active
at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:70)
at com.google.inject.persist.jpa.JpaLocalTxnInterceptor.invoke(JpaLocalTxnInterceptor.java:87)
at com.exzeo.indexer.persistence.repository.impl.AvailableServerRepository.insertAvailableServer(AvailableServerRepository.java:34)
at com.exzeo.indexer.persistence.repository.impl.AvailableServerRepositoryTest.testInsertAvailableServer(AvailableServerRepositoryTest.java:56)

【问题讨论】：

发布完整的堆栈跟踪
Hey Chaitanya 它在执行测试用例时只显示此消息
你可以找到我的解决方案at this address。

标签： hibernate jpa dependency-injection transactions guice

【解决方案1】：

嘿，我发现错误是导入问题。而不是使用 javax.transaction.Transactional 我正在使用 com.google.inject.persist.Transactional

因此，当我们使用 google.inject.persist.transaction 时，事务未处于活动状态。然后当有人尝试提交或刷新任何事务时，它会出现异常。

【讨论】：