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下面是我的代碼..我應用了Spring框架n休眠JPA，除了一個保存它的函數之外，我的所有代碼都可以工作..在其他類似的代碼中，Service for Makanan實體工作好..我不知道哪裏是錯誤的...org.hibernate.MappingException：未知實體SessionFactoryImpl.getEntityPersister
有3個實體（S），其有兩個多對一關係的..
的salesdetail有它的銷售和Makanan關係.. Makanan的所有代碼都很好用，但不適用於Sales and SalesDetail。
當我要救銷售，其將錯誤這樣
Exception in thread "main" org.hibernate.MappingException: Unknown entity: restodeskapp.model.Sales
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)
at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:495)
at restodeskapp.dao.BaseDaoHibernate.save(BaseDaoHibernate.java:29)
at restodeskapp.service.impl.SalesServiceImpl.save(SalesServiceImpl.java:33)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
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.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy16.save(Unknown Source)
at restodeskapp.MainSpring.main(MainSpring.java:74)
我這裏銷售的代碼
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import org.hibernate.annotations.Cascade;
@Entity
@Table(name="T_SALES")
public class Sales implements Serializable{
@Id @GeneratedValue
@Column(name="ID")
private Long id;
@Column(name="NO_TABLE", nullable=false)
private int noTable;
@Temporal(TemporalType.TIMESTAMP)
@Column(name="SALES_DATE",nullable=false)
private Date salesDate;
@OneToMany(mappedBy="sales",cascade=CascadeType.ALL)
@Cascade(org.hibernate.annotations.CascadeType.DELETE_ORPHAN)
private List<SalesDetail> salesDetails;
@Column(name="TOTAL_SALES",precision=18,scale=0,nullable=false)
private BigDecimal totalSales;
//setter getter
}
這裏我的salesdetail
@Entity
@Table(name="T_SALES_DETAIL")
public class SalesDetail implements Serializable{
@Id @GeneratedValue
@Column(name="ID")
private Long id;
@ManyToOne
@JoinColumn(name="MAKANAN_ID",nullable=false)
private Makanan product;
@Column(name="QUANTITY",nullable=false)
private Integer quantity;
@Column(name="PRICE",nullable=false,precision=18,scale=0)
private BigDecimal price;
@Column(name="SUBTOTAL",nullable=false,precision=18,scale=0)
private BigDecimal subtotal = BigDecimal.ZERO;
@ManyToOne
@JoinColumn(name="SALES_ID",nullable=false)
private Sales sales;
//setter getter
}
basedaohibernate.java
public class BaseDaoHibernate<T> {
@SuppressWarnings("unchecked")
protected Class domainClass;
@Autowired
protected SessionFactory sessionFactory;
@SuppressWarnings("unchecked")
public BaseDaoHibernate() {
this.domainClass = (Class) ((ParameterizedType)
getClass().getGenericSuperclass())
.getActualTypeArguments()[0];
}
public T save(T domain) {
sessionFactory.getCurrentSession().saveOrUpdate(domain);
return domain;
}
@SuppressWarnings("unchecked")
public T getById(Long id) {
return (T) sessionFactory.getCurrentSession().get(domainClass, id);
}
public T delete(T domain) {
sessionFactory.getCurrentSession().delete(domain);
return domain;
}
@SuppressWarnings("unchecked")
public T getByName(String name) {
return (T) sessionFactory.getCurrentSession().get(domainClass, name);
}
@SuppressWarnings("unchecked")
public Long count() {
List list = sessionFactory.getCurrentSession().createQuery(
"select count(*) from " + domainClass.getName() + " x").list();
Long count = (Long) list.get(0);
return count;
}
@SuppressWarnings("unchecked")
public List<T> getAll() {
return sessionFactory.getCurrentSession().createQuery("from " +
domainClass.getName())
.list();
}
@SuppressWarnings("unchecked")
public List<T> getAll(int start, int num) {
return sessionFactory.getCurrentSession().createQuery("from " +
domainClass.getName())
.setFirstResult(start).setMaxResults(num)
.list();
}
}
SalesServiceImpl
@Service(value="salesService")
@Transactional(readOnly=true)
public class SalesServiceImpl implements SalesService{
@Autowired private SalesDao salesDao;
@Transactional
public Sales save(Sales sales) {
//agar yang digunakan adalah Date server bukan date client kalau dijalankan
//dengan arsitektur three tier
sales.setSalesDate(new Date());
return salesDao.save(sales);
}
@Transactional
public Sales delete(Sales sales) {
return salesDao.delete(sales);
}
public Sales getSales(Long id) {
Sales s = salesDao.getById(id);
Hibernate.initialize(s.getSalesDetails());
return s;
}
public List<Sales> getSales() {
return salesDao.getAll();
}
public List<Sales> getSales(int start, int num) {
return salesDao.getAll(start, num);
}
}
我的數據庫架構
create table T_MAKANAN(
id integer auto_increment primary key,
`name` varchar(100) unique not null,
description varchar(777) not null,
price decimal(65) not null,
note varchar(777),
status varchar(200) not null,
type varchar(200) not null,
picture varbinary(2222222222) not null
) engine=InnoDB;
create table T_SALES(
id integer auto_increment primary key,
no_table integer(50) not null,
sales_date date not null,
total_sales decimal(65) not null
) engine=InnoDB;
create table T_SALES_DETAIL(
id integer auto_increment primary key,
quantity integer not null,
price decimal(65) not null,
subtotal decimal(65) not null,
makanan_id integer not null,
sales_id integer not null,
FOREIGN KEY (makanan_id) REFERENCES T_MAKANAN(id),
FOREIGN KEY (sales_id) REFERENCES T_SALES(id)
) engine=InnoDB;
感謝ü....