Question

在我们的项目中，我们面临着下面的堆栈跟踪异常。它在对象合并期间发生有时（我无法重现它）。我不确切知道哪个对象导致此错误，因为很多级联。环境无关紧要，它发生在生产和开发环境中。

我们使用Hibernate 4.2.5.Final，Spring 3.2.2.RELEASE，Java 7，Tomcat 7。

java.lang.ClassCastException: java.lang.Boolean cannot be cast to java.util.Date
at org.hibernate.type.descriptor.java.JdbcTimestampTypeDescriptor.areEqual(JdbcTimestampTypeDescriptor.java:41)
at org.hibernate.type.AbstractStandardBasicType.isEqual(AbstractStandardBasicType.java:205)
at org.hibernate.type.AbstractStandardBasicType.isSame(AbstractStandardBasicType.java:195)
at org.hibernate.type.AbstractStandardBasicType.isDirty(AbstractStandardBasicType.java:231)
at org.hibernate.type.AbstractStandardBasicType.isDirty(AbstractStandardBasicType.java:227)
at org.hibernate.type.TypeHelper.findDirty(TypeHelper.java:294)
at org.hibernate.persister.entity.AbstractEntityPersister.findDirty(AbstractEntityPersister.java:4037)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:527)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.isUpdateNecessary(DefaultFlushEntityEventListener.java:234)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:163)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:228)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:100)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234)
at org.springframework.orm.hibernate4.SpringSessionSynchronization.beforeCommit(SpringSessionSynchronization.java:91)
at org.springframework.transaction.support.TransactionSynchronizationUtils.triggerBeforeCommit(TransactionSynchronizationUtils.java:95)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerBeforeCommit(AbstractPlatformTransactionManager.java:925)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:738)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:475)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:270)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy115.method(Unknown Source)
at com.some.package.OurClass.method(OurClass.java:114)

编辑：方法“com.some.package.OurClass.method”刚做了Hibernate merge（）操作。

Answer 1

我再一次看了它，我找到了原因。我们在域对象中有字段，名称为＆＃34; created＆＃34; （类型日期）和瞬态方法被处理。方法如下：

@Column(...)
public Date getCreated() {
    return created;
}

@Transient
public boolean isCreated() {
    return isStatus(StatusType.CREATED);
}

我通过将方法isCreated重命名为isCreatedStatus（）来解决它。

Hibernate异常java.lang.ClassCastException：java.lang.Boolean不能强制转换为java.util.Date

1 个答案: