如何解决Hibernate异常的原因"调用setter时发生IllegalArgumentException"？

Question

IllegalArgumentException occurred while calling setter当我的程序试图从数据库中按名称加载用户时,如何解决Hibernate抛出的偶然异常的原因？

我是否错误地将USER_RV表中的列映射User到类Integer而不是BigDecimal其他整数类型？请注意,同一应用程序将NUMBER其他表中的列映射到Integer对象,但在使用这些表中的行填充对象时,Hibernate 不会抛出此异常.

还要注意,计划使RMI缓存复制的唯一用户缓存.这个异常可能与缓存复制有关吗？这是Ehcache或Hibernate中的错误吗？

Caused by: org.springframework.orm.hibernate3.HibernateSystemException: IllegalArgumentException occurred while calling setter of com.db.spgit.abstrack.model.User.rv; nested exception is org.hibernate.PropertyAccessException: IllegalArgumentException occurred while calling setter of com.db.spgit.abstrack.model.User.rv
    at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:676)
    at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
    at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
    at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
    at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:1055)
    at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:1048)
    at com.db.abstrack.dao.hibernate.AbstrackDaoHibernate.findByCriteria(AbstrackDaoHibernate.java:57)
    at com.db.abstrack.dao.hibernate.UserDaoHibernate.loadByName(UserDaoHibernate.java:63)
    at com.db.spgit.abstrack.manager.QuoteManager.populateUser(QuoteManager.java:330)
    at com.db.spgit.abstrack.manager.QuoteManager.populateOwnerUK(QuoteManager.java:307)
    at com.db.spgit.abstrack.manager.QuoteManager.populateGuids(QuoteManager.java:254)
    at com.db.spgit.abstrack.manager.QuoteManager.addQuoteReturnVwRfqUK(QuoteManager.java:429)
    at com.db.spgit.abstrack.manager.QuoteManager$$FastClassByCGLIB$$d817accb.invoke(<generated>)
    at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
    at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:700)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:635)
    at com.db.spgit.abstrack.manager.QuoteManager$$EnhancerByCGLIB$$cc8d0025.addQuoteReturnVwRfqUK(<generated>)
    at com.db.abstrack.ejb.RfqBean.addRfqDraftListUK(RfqBean.java:370)
    ... 59 more
Caused by: org.hibernate.PropertyAccessException: IllegalArgumentException occurred while calling setter of com.db.spgit.abstrack.model.User.rv
    at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:104)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:337)
    at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:200)
    at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:3514)
    at org.hibernate.cache.entry.CacheEntry.assemble(CacheEntry.java:116)
    at org.hibernate.cache.entry.CacheEntry.assemble(CacheEntry.java:82)
    at org.hibernate.event.def.DefaultLoadEventListener.assembleCacheEntry(DefaultLoadEventListener.java:553)
    at org.hibernate.event.def.DefaultLoadEventListener.loadFromSecondLevelCache(DefaultLoadEventListener.java:508)
    at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:357)
    at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:139)
    at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:179)
    at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103)
    at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
    at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:846)
    at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:557)
    at org.hibernate.type.ManyToOneType.assemble(ManyToOneType.java:196)
    at org.hibernate.cache.StandardQueryCache.get(StandardQueryCache.java:130)
    at org.hibernate.loader.Loader.getResultFromQueryCache(Loader.java:2152)
    at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2117)
    at org.hibernate.loader.Loader.list(Loader.java:2087)
    at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95)
    at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
    at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
    at org.springframework.orm.hibernate3.HibernateTemplate$36.doInHibernate(HibernateTemplate.java:1065)
    at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419)
    ... 77 more
Caused by: java.lang.IllegalArgumentException: java.lang.ClassCastException@6be0d6
    at sun.reflect.GeneratedMethodAccessor104.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:42)
    ... 101 more

课程定义User:

@Entity
@Proxy(lazy=false)
@Cache(usage=CacheConcurrencyStrategy.TRANSACTIONAL)
@Table(name="TB_USER"
    ,schema="ABSOL_USER"
)
public class User  implements java.io.Serializable {
     private String id;
     private String userName;
     private Integer rv;

     public User() {
     }

     public User(String userName, Integer rv) {
        this.userName = userName;
        this.rv = rv;
     }

     @GenericGenerator(name="generator", strategy="guid")@Id @GeneratedValue(generator="generator")

     @Column(name="USER_ID", unique=true, nullable=false)
     public String getId() {
         return this.id;
     }

     public void setId(String id) {
         this.id = id;
     }

     @Column(name="USER_NAME", nullable=false, length=20)
     public String getUserName() {
         return this.userName;
     }

     public void setUserName(String userName) {
         this.userName = userName;
     }

     @Column(name="USER_RV", precision=22, scale=0)
     public Integer getRv() {
         return this.rv;
     }

     public void setRv(Integer rv) {
         this.rv = rv;
     }
}

表的定义TB_USER:

CREATE TABLE "ABSOL_OWNER"."TB_USER" (
   "USER_ID" RAW(16) DEFAULT SYS_GUID(), 
   "USER_NAME" VARCHAR2(20 CHAR) NOT NULL ENABLE, 
   "USER_RV" NUMBER NOT NULL ENABLE, 
   PRIMARY KEY ("USER_ID")
)

环境:

• Hibernate 3.3.2.GA
• Ehcache 2.2.0
• WebLogic Server 10.3.2
• Oracle数据库
• 缓存用户对象
• 通过远程密钥失效启用RMI缓存复制

Answer 1

事实证明,这个异常是由于Hibernate中的一个错误造成的.我的一个队友发现了一个相关的错误报告,从群集JBoss Cache重新组装实体可能会因"参数类型不匹配"而失败,这种情况在使用Hibernate和JBoss Cache时会发生.

根据该报告,将Hibernate属性设置hibernate.cache.use_structured_entries为true可以避免异常.根据Hibernate 文档,此属性"强制Hibernate以更人性化的格式将数据存储在二级缓存中".显然,结构化缓存条目还确保Hibernate正确地将二级缓存中对象的属性映射到实体中的相应属性.

Javalobby有一篇有趣的文章解释了Hibernate如何使用二级缓存.

3.3.2GA之后的Hibernate版本是否也表现出这种行为？