4
我得到了weired異常，無法跟蹤它爲什麼如此。請在這裏幫助我。休眠代碼... onetoone映射中的異常
我只是使用OnetoOne映射與PrimarykeyJoinColumn屬性。
@Entity
@Table(name="mediashow_user1")
public class UserVO implements Serializable{
private static final long serialVersionUID = 6066636545309839156L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long empid ;
private String email = null;
private String fname = null ;
private String lname = null ;
private String mname = null ;
private String uname = null ;
private String passwd = null ;
private String serctquestion = null ;
private String serctanswer = null ;
private int telephone;
private Timestamp cur_timestamp = null ;
private Timestamp lastvisited_timestamp = null ;
@OneToOne(cascade=CascadeType.ALL)
@PrimaryKeyJoinColumn
private AddressVO addressVO;
@Column(name="empid")
public Long getEmpid() {
return empid;
}
..................
另一AddressVO.java
@Entity
@Table(name="mediashow_address1")
@GenericGenerator(name="foreign", strategy = "foreign", parameters={
@Parameter(name="property", value="userVO")
})
public class AddressVO implements Serializable {
private static final long serialVersionUID = -96886746528894662L;
@Id
@GeneratedValue(generator="foreign")
private Long empid;
private String street = null ;
private String zipcode = null ;
private String landmark = null ;
........
}
Transaction transaction = null;
try {
transaction = session.beginTransaction();
AnnotationConfiguration conf = (new AnnotationConfiguration()).configure();
new SchemaExport(conf).create(true, false);
UserVO user = new UserVO();
user.setEmail("[email protected]");
user.setFname("Rahul10");
user.setMname("Bapusaheb10");
user.setLname("Bandgar10");
user.setUname("rahul");
user.setPasswd("rahul");
user.setSerctanswer("baramati");
user.setSerctquestion("What is your birth place name?");
AddressVO address = new AddressVO();
address.setLandmark("Landmark5");
address.setStreet("street4");
address.setZipcode("234344");
int i = 9850;
user.setTelephone(i);
user.setAddressVO(address);
Long id= (Long)session.save(user);
System.out.println("ID::"+id);
transaction.commit();
} catch (HibernateException e) {
System.out.println("Exception:"+e.getMessage());
transaction.rollback();
e.printStackTrace();
} finally {
session.close();
}
和我得到在運行上面的代碼下面的異常。
ALTER TABLE mediashow_user1 下降 外鍵FK5FD5BCE8801495D
drop table if exists mediashow_address1
drop table if exists mediashow_user1
create table mediashow_address1 (
empid bigint not null,
landmark varchar(255),
street varchar(255),
zipcode varchar(255),
primary key (empid)
)
create table mediashow_user1 (
empid bigint not null auto_increment,
cur_timestamp datetime,
email varchar(255),
fname varchar(255),
lastvisited_timestamp datetime,
lname varchar(255),
mname varchar(255),
passwd varchar(255),
serctanswer varchar(255),
serctquestion varchar(255),
telephone integer not null,
uname varchar(255),
primary key (empid)
)
alter table mediashow_user1
add index FK5FD5BCE8801495D (empid),
add constraint FK5FD5BCE8801495D
foreign key (empid)
references mediashow_address1 (empid)
Exception in thread "main" java.lang.NullPointerException
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getPropertyValue(AbstractEntityTuplizer.java:521)
at org.hibernate.persister.entity.AbstractEntityPersister.getPropertyValue(AbstractEntityPersister.java:3867)
at org.hibernate.id.ForeignGenerator.generate(ForeignGenerator.java:100)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:117)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677)
at org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:252)
at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:392)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:335)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204)
at org.hibernate.engine.Cascade.cascade(Cascade.java:161)
at org.hibernate.event.def.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:450)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:282)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
at com.imgshop.run.TestAddIntoLogin.main(TestAddIntoLogin.java:49)
只有當我google搜索3+小時後得到正確答案的地方。 – xyz