java - Hibernate Envers - DefaultRevisionEntity 无法转换为 javassist.util.proxy.Proxy

Question

我的配置:

1. AS:Weblogic 12 c
2. Java 8
3. Hibernate 核心 5.0.5.Final
4. Hibernate Envers 5.0.5.Final

我正在使用 Hibernate Envers 的基本配置，我可以看到我的审核表已正确填充，并且在插入/更新/删除时也可以看到我的“revinfo”表。

问题是当我咨询某些实体/修订时，会发生错误。

我的查询:

    @PersistenceContext(unitName = "pu")
    protected EntityManager em;


    @SuppressWarnings("rawtypes")
    public List<Object[]> list(Class classe){
        AuditQuery query = getAuditReader().createQuery()
                .forRevisionsOfEntity(classe, false, true);

//Error occurs here:
        Number revision = (Number) query
                .getSingleResult();

        System.out.println(revision);

        List<Object[]> list = null;
        return list;
    }

    private AuditReader getAuditReader() {
        AuditReader reader = AuditReaderFactory.get(em);
        return reader;
    }

错误:

javax.ejb.EJBException: EJB Exception: : org.hibernate.HibernateException: HHH000142: Javassist Enhancement failed: org.hibernate.envers.DefaultRevisionEntity
    at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:130)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:666)
    at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:4461)
    at org.hibernate.event.internal.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:336)
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:257)
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:137)
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1129)
    at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1022)
    at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:632)
    at org.hibernate.type.EntityType.resolve(EntityType.java:424)
    at org.hibernate.type.ComponentType.resolve(ComponentType.java:687)
    at org.hibernate.loader.Loader.extractKeysFromResultSet(Loader.java:848)
    at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:714)
    at org.hibernate.loader.Loader.processResultSet(Loader.java:972)
    at org.hibernate.loader.Loader.doQuery(Loader.java:930)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:336)
    at org.hibernate.loader.Loader.doList(Loader.java:2611)
    at org.hibernate.loader.Loader.doList(Loader.java:2594)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2423)
    at org.hibernate.loader.Loader.list(Loader.java:2418)
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:501)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:371)
    at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216)
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1326)
    at org.hibernate.internal.QueryImpl.list(QueryImpl.java:87)
Caused by: java.lang.ClassCastException: org.hibernate.envers.DefaultRevisionEntity_$$_javassist_153 cannot be cast to javassist.util.proxy.Proxy
    at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:123)
    ... 129 more
    at weblogic.ejb.container.internal.EJBRuntimeUtils.throwEJBException(EJBRuntimeUtils.java:88)
    at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:503)
    at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:446)
    at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:251)
    at weblogic.ejb.container.internal.BaseLocalObject.__WL_postInvokeTxRetry(BaseLocalObject.java:204)
    Truncated. see log file for complete stacktrace
Caused By: org.hibernate.HibernateException: HHH000142: Javassist Enhancement failed: org.hibernate.envers.DefaultRevisionEntity
    at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:130)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:666)
    at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:4461)
    at org.hibernate.event.internal.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:336)
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:257)
    Truncated. see log file for complete stacktrace
Caused By: java.lang.ClassCastException: org.hibernate.envers.DefaultRevisionEntity_$$_javassist_153 cannot be cast to javassist.util.proxy.Proxy
    at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:123)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:666)
    at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:4461)
    at org.hibernate.event.internal.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:336)
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:257)
    Truncated. see log file for complete stacktrace

编辑:。我可以在 Weblogic CAT 中看到存在多个库冲突(app lib 与 weblogic lib)，包括 javassist。

所以我将其添加到我耳中的 weblogic-application.xml 中:

<prefer-application-packages>
    <package-name>antlr.*</package-name>
    <package-name>javassist.*</package-name>
</prefer-application-packages>

现在我遇到了一个新的不同异常，但是现在当 Weblogic 启动时会发生这种情况:

weblogic.management.DeploymentException: java.lang.ClassCastException: org.jboss.weld.security.Principal$1127466021$Proxy$_$$_Weld$Proxy$ cannot be cast to javassist.util.proxy.ProxyObject
    at weblogic.application.internal.BaseDeployment.throwAppException(BaseDeployment.java:123)
    at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:260)
    at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:61)
    at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165)
    at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:80)
    Truncated. see log file for complete stacktrace
Caused By: java.lang.ClassCastException: org.jboss.weld.security.Principal$1127466021$Proxy$_$$_Weld$Proxy$ cannot be cast to javassist.util.proxy.ProxyObject
    at org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:249)
    at org.jboss.weld.bean.builtin.ee.AbstractEEBean.<init>(AbstractEEBean.java:43)
    at org.jboss.weld.bean.builtin.ee.PrincipalBean.<init>(PrincipalBean.java:52)
    at org.jboss.weld.bootstrap.BeanDeployment.createBeans(BeanDeployment.java:193)
    at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:349)
    Truncated. see log file for complete stacktrace

知道发生了什么吗？

Answer 1

我首先要确保类路径上有正确版本的 Javassist，并且不会意外地拥有多个版本。过去当我遇到版本冲突时，我也遇到过类似的问题。

对于 Hibernate 5.0.5，它将是 javassist-3.18.1-GA.jar。

这是我的审核历史存储库实现的示例，它返回按给定实体类型的修订号排序的实体修订列表，并作为引用的实体标识符。

public class AuditHistoryRepository<T, ID extends Serializable> {

  @PersistenceContext 
  private EntityManager entityManager;
  private Class<T> entityClazz;

  public List<T> getEntityRevisionsById(ID id) {
    List<T> results = new ArrayList<>();
    // read audit history
    AuditReader reader = AuditReaderFactory.get(entityManager);
    AuditQuery query = reader.createQuery()
      .forRevisionsOfEntity(entityClazz, false, true)
      .add(AuditEntity.id().eq(id))
      .addOrder(AuditEntity.revisionNumber().asc());
    // get results
    for(Object row : query.getResultList()) {
      if(row instanceof Object[]) {
        Object[] array = (Object[])row;
        T entity = (T) array[0];
        results.add(entity);
      }
    }
    return results;
  }
}