Question

最后几个小时我尝试用spring jpa 2.0 3.0进行测试最后我可以恢复持久化的对象但是当我尝试持久保存新对象时，我收到以下错误消息：

org.springframework.dao.InvalidDataAccessApiUsageException：没有正在进行的交易;嵌套异常是javax.persistence.TransactionRequiredException：没有事务正在进行中在org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible（EntityManagerFactoryUtils.java:306）在org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible（HibernateJpaDialect.java:102）在org.springframework.dao.support.DataAccessUtils.translateIfNecessary（DataAccessUtils.java:213）在org.springframework.orm.jpa.JpaAccessor.translateIfNecessary（JpaAccessor.java:152）在org.springframework.orm.jpa.JpaTemplate.execute（JpaTemplate.java:188）在org.springframework.orm.jpa.JpaTemplate.flush（JpaTemplate.java:288） at myPackage.testDAO.create（testDAO.java:33）在myPackage.Main.main（Main.java:27）引起：javax.persistence.TransactionRequiredException：没有事务正在进行中在org.hibernate.ejb.AbstractEntityManagerImpl.flush（AbstractEntityManagerImpl.java:789） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）在java.lang.reflect.Method.invoke（Method.java:597）在org.springframework.orm.jpa.ExtendedEntityManagerCreator $ ExtendedEntityManagerInvocationHandler.invoke（ExtendedEntityManagerCreator.java:365）在$ Proxy21.flush（未知来源）在org.springframework.orm.jpa.JpaTemplate $ 8.doInJpa（JpaTemplate.java:290）在org.springframework.orm.jpa.JpaTemplate.execute（JpaTemplate.java:183） ......还有3个

我的实体bean：

@Entity public class Application实现Serializable { private static final long serialVersionUID = 1L;

@Id
@Column(name="ID_APPLICATION")
private long idApplication;

@Temporal( TemporalType.DATE)
@Column(name="DATE_LIVRAISON")
private Date dateLivraison;

@Lob()
private String description;

@Column(name="NOM_APPLICATION")
private String nomApplication;

private String url;

//bi-directional many-to-one association to Test
@OneToMany(mappedBy="application")
private List<Test> tests;

public Application() {
}

public long getIdApplication() {
    return this.idApplication;
}

public void setIdApplication(long idApplication) {
    this.idApplication = idApplication;
}

public Date getDateLivraison() {
    return this.dateLivraison;
}

public void setDateLivraison(Date dateLivraison) {
    this.dateLivraison = dateLivraison;
}

public String getDescription() {
    return this.description;
}

public void setDescription(String description) {
    this.description = description;
}

public String getNomApplication() {
    return this.nomApplication;
}

public void setNomApplication(String nomApplication) {
    this.nomApplication = nomApplication;
}

public String getUrl() {
    return this.url;
}

public void setUrl(String url) {
    this.url = url;
}

public List<Test> getTests() {
    return this.tests;
}

public void setTests(List<Test> tests) {
    this.tests = tests;
}

}

我的存储库：

@Repository 公共类testDAO扩展JpaDaoSupport实现ItestDAO { @PersistenceContext 私有EntityManager em;

public List<Application> findALL() {
    // TODO Auto-generated method stub
    return null;
}

public Application findById(long id) {
    // TODO Auto-generated method stub
    return getJpaTemplate().find(Application.class, id);
}

public void create(Application application) {
    getJpaTemplate().persist(application);
}

}

findById方法正常工作（这让我确信jpa配置是正确的），但是当我运行create方法时，我收到上面的错误信息。

ApplicationContext context=new ClassPathXmlApplicationContext("application-context.xml");
    testDAO dao=(testDAO)context.getBean("dao");
    Application application=new Application();
    application.setIdApplication(2);
    application.setUrl("url");
    application.setDescription("description");
    application.setNomApplication("dsdsds");
    dao.create(application);

任何帮助表示赞赏谢谢你的帮助

Answer 1

简而言之，EntityManager的方法，例如persist，remove，merge必须在事务中调用，因此错误消息实际上是自我解释：< / p>

javax.persistence.TransactionRequiredException: no transaction is in progress

Spring为事务管理提供支持（参见下面的链接），包括编写测试时...如果你使用提供transactional support的Spring测试类之一。

集成JPA2.0和Spring

1 个答案:

另见