@Entity
@Table( name = "bi_user" )
@SequenceGenerator( name = "USER_SEQ_GEN",sequenceName = "USER_SEQUENCE" )
public class User
        extends DataObjectAbstract<Long>
{
    private static final long serialVersionUID = -7870157016168718980L;

    /**
     * key for this instance. Should be managed by JPA provider.
     */
    @Id
    @GeneratedValue( strategy = GenerationType.SEQUENCE,generator = "USER_SEQ_GEN" )
    private Long key;

    /**
     * Username the user will use to login.  This should be an email address
     */
    @Column( nullable=false,unique=true)
    private String username;

    // etc. other columns and getters/setters
}

其中DataObjectAbstract是一个简单的@MappedSuperClass,它具有jpa版本和equals / hashcode定义.

我有一个基本的dao类,看起来像这样

public abstract class BaseDaoAbstract<T extends DataObject<K>,K extends Serializable>
        implements BaseDao<T,K>
{

    @PersistenceContext
    private EntityManager em;

    /**
     * Save a new entity. If the entity has already been persisted,then merge
     * should be called instead.
     * 
     * @param entity The transient entity to be saved.
     * @return The persisted transient entity.
     */
    @Transactional
    public T persist( T entity )
    {
        em.persist( entity );
        return entity;
    }

    /**
     * merge the changes in this detached object into the current persistent
     * context and write through to the database. This should be called to save
     * entities that already exist in the database.
     * 
     * @param entity The entity to be merged
     * @return The merged entity.
     */
    @Transactional
    public T merge( T entity )
    {
        return em.merge( entity );
    }

    // other methods like persist,delete,refresh,findByKey that all delegate to em.
}

我已经在web.xml中定义了OpenEntityManagerInView过滤器,如下所示

<filter>
    <filter-name>openEntityManagerInViewFilter</filter-name>
    <filter-class>
        org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
    </filter-class>
    <init-param>
        <param-name>entityManagerfactorybeanName</param-name>
        <param-value>biEmf</param-value>
    </init-param>
</filter>

<filter-mapping>
    <filter-name>openEntityManagerInViewFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

我最近升级到eclipselink 2.3.2和Spring 3.1,并从CGLIB代理转换为使用AspectJ for Spring的加载时间编织,但是我没有为eclipselink配置LTW.

问题出在这个代码中,它存在于SpringListener中,见注释.

User user = userService.findByKey(userDetails.getKey());

        // THIS MERGE NEVER WRITES THROUGH TO THE DATABASE.
        // THIS DOESN'T WORK AS PERSIST EITHER
        user = userService.merge( user.loginSuccess() );

user.loginSuccess只是设置一些字段并返回这个我确定它正在通过代码,因为我收到日志语句,我可以设置一个断点并通过它.我的postgres日志没有显示任何流量到postgres合并.

我保存所有地方的其他东西没有问题,包括用户在另一个位置,当他们更改密码,我知道这个代码以前工作.这里有什么明显的不好吗？我使用OpenEntityManagerInViewFilter不正确吗？我应该使用@Transactional方法,以便实体被认为是管理的？任何帮助是赞赏.

更新
我尝试了由prajeesh建议的冲水.这是代码

@Transactional
public T merge( T entity )
{
    entity = em.merge( entity );
    em.flush();
    return entity;
}

在com.bi.data的一个类中.我有这个在我的春天app配置文件

<context:component-scan base-package="com.bi.controller,com.bi.data,com.bi.web" />

在我的春天配置我有

<context:load-time-weaver/>
<tx:annotation-driven mode="aspectj"/>

一个aop.xml如下所示：

<aspectj>
    <weaver>
        <!-- only weave classes in our application-specific packages -->
        <include within="com.bi..*"/>
    </weaver>
</aspectj>

我得到了

javax.persistence.TransactionrequiredException: 
Exception Description: No transaction is currently active

所以有些东西显然配置错误,但是什么？

更新2：
我恢复了我的更改以启用加载时间编织,现在合并通过或不使用flush,但我仍然不明白LTW的问题是什么…