Question

我的应用程序使用envers将数据写入_aud表，并将其包装到写入另一个表的xml中。我在Envers 4.3中使用条件审计来完成。我的课程扩展了EnversIntegrator

@Override   
public void integrate(Configuration configuration,SessionFactoryImplementor sessionFactory,SessionFactoryServiceRegistry serviceRegistry)
{  
    EventListenerRegistry listenerRegistry = serviceRegistry.getService( EventListenerRegistry.class );
    listenerRegistry.addDuplicationStrategy( EnversListenerDuplicationStrategy.INSTANCE );  
    final AuditConfiguration enversConfiguration = AuditConfiguration.getFor( configuration, serviceRegistry.getService( ClassLoaderService.class ) );  
    if (enversConfiguration.getEntCfg().hasAuditedEntities()) 
    {          
        listenerRegistry.appendListeners( EventType.POST_UPDATE, new PostUpdateListenerLog( enversConfiguration ) );
        listenerRegistry.appendListeners( EventType.POST_INSERT, new PostInsertListenerLog( enversConfiguration ) );
        listenerRegistry.appendListeners( EventType.POST_DELETE, new PostDeleteListenerLog( enversConfiguration ) );
    }   
}

在Envers 5.0中删除了AuditConfiguration（https://github.com/hibernate/hibernate-orm/blob/5.0/migration-guide.adoc）优先于新的org.hibernate.envers.boot.internal.EnversService

所以我改变了我的代码，实现了新的Integrator接口

@Override
public void integrate(Metadata mtdt, SessionFactoryImplementor sfi, SessionFactoryServiceRegistry serviceRegistry) {

    EventListenerRegistry listenerRegistry = serviceRegistry.getService( EventListenerRegistry.class );
    listenerRegistry.addDuplicationStrategy( EnversListenerDuplicationStrategy.INSTANCE );  

    EnversService enversService = new EnversServiceImpl();
    if(enversService.getEntitiesConfigurations().hasAuditedEntities()) {
        listenerRegistry.appendListeners( EventType.POST_UPDATE, new PostUpdateListenerLog( enversService ) );
        listenerRegistry.appendListeners( EventType.POST_INSERT, new PostInsertListenerLog( enversService ) );
        listenerRegistry.appendListeners( EventType.POST_DELETE, new PostDeleteListenerLog( enversService ) );
    }

}

此代码不起作用，因为EnversService未初始化，只给我一个

java.lang.IllegalStateException：服务尚未初始化在org.hibernate.envers.boot.internal.EnversServiceImpl.getEntitiesConfigurations（EnversServiceImpl.java:253）

我尝试检索EnversService，就像我使用旧的AuditConfiguration一样，没有任何结果。我阅读了官方指南（http://docs.jboss.org/hibernate/orm/5.0/userguide/html_single/Hibernate_User_Guide.html），但我发现没有什么可以帮助我。

如何检索可用于自定义侦听器的EnversService实例？

谢谢，安德鲁

Answer 1

我反编译org.hibernate.envers.boot.internal.EnversIntegrator类并找到解决方案。

@Override
public void integrate(Metadata metadata, SessionFactoryImplementor sessionFactory, SessionFactoryServiceRegistry serviceRegistry) {

    EventListenerRegistry listenerRegistry = serviceRegistry.getService( EventListenerRegistry.class );
    listenerRegistry.addDuplicationStrategy( EnversListenerDuplicationStrategy.INSTANCE );  

    EnversService enversService = serviceRegistry.getService(EnversService.class);
    if (!enversService.isInitialized()) {
        throw new HibernateException("Expecting EnversService to have been initialized prior to call to EnversIntegrator#integrate");
    }
    if(enversService.getEntitiesConfigurations().hasAuditedEntities()) {
        listenerRegistry.appendListeners( EventType.POST_UPDATE, new PostUpdateListenerLog( enversService ) );
        listenerRegistry.appendListeners( EventType.POST_INSERT, new PostInsertListenerLog( enversService ) );
        listenerRegistry.appendListeners( EventType.POST_DELETE, new PostDeleteListenerLog( enversService ) );
    }
}

解决了问题！

Hibernate Envers 4.3迁移到5.0 - 条件envers审计

1 个答案: