请教hibernate问题。。。。。。急！！！！

Question

老是抛出一下错误：
Exception in thread "main" org.hibernate.PropertyAccessException: IllegalArgumentException occurred while calling setter of Domain.Typeofuser.drivers
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:3566)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:129)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854)
at org.hibernate.loader.Loader.doQuery(Loader.java:729)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1860)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:48)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:42)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3044)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:395)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:375)
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.get(SessionImpl.java:815)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:808)
at QinHan.DaoImpl.typeofuserDaoImpl.getById(typeofuserDaoImpl.java:19)
at test.main(test.java:22)
Caused by: java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:42)
... 21 more

Answer 1

以下是借口实现类：
public class typeofuserDaoImpl  extends BaseDaoImpl implements typeofuserDAO { public Typeofuser getById(int did){
Session session=this.getSession();
Typeofuser typeofuser=null;
session.isOpen();
typeofuser=(Typeofuser)session.get(Typeofuser.class, new Integer(did));
this.closeSession();
return typeofuser;
}
public Session getSession() 
{
// TODO Auto-generated method stub
return HibernateSessionFactory.getSession();
}

public void closeSession() 
{
// TODO Auto-generated method stub
HibernateSessionFactory.closeSession();
}

}

Answer 2

以下是测试类： /**
 * @param args
 */
public static void main(String[] args) {

// TODO Auto-generated method stub
driverDAO driverdao=new driverDaoImpl();
typeofuserDAO typeofuserdao=new typeofuserDaoImpl();
Typeofuser typeofuser=null;

typeofuser=typeofuserdao.getById(1);

/*
Drivers driver=new Drivers();
driver.setDriver_descripition("wo shi qin han");
driver.setTypeOfUser(typeofuser);

driverdao.add(driver);
*/
System.out.println( typeofuser.getName());
}}

Answer 3

调试发现每次执行到typeofuser=(Typeofuser)session.get(Typeofuser.class, new Integer(did));这一局就执行不下去了，请问各位高手是咋回事啊

Answer 4

Hibernate映射文件和实体属性映射个数不对，或类型出错.
看看你的实体Bean和映射文件映射是否正确，也可以把你的实体Bean和映射文件发上来让大家看看
检查一下这两个文件Domain.Typeofuser.drivers，drivers.hbm.xml