Goods 实体层及注解
package entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
/**
* 商品表
* */
@Entity
@Table(name="t_goods")
public class Goods {
@Id
@GeneratedValue(generator="seq_goods",strategy=GenerationType.SEQUENCE)
@SequenceGenerator(name="seq_goods",sequenceName="seq_goods",allocationSize=1,initialValue=1)
private Integer id;//商品编号
@Column
private Double price;//商品价格
@Column
private String name;//商品名称
@Column
private String specification;//商品介绍
@Column
private String manufacture;//制造商
public Goods() {
}
public Goods(Double price, String name, String specification,String manufacture) {
this.price = price;
this.name = name;
this.specification = specification;
this.manufacture = manufacture;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSpecification() {
return specification;
}
public void setSpecification(String specification) {
this.specification = specification;
}
public String getManufacture() {
return manufacture;
}
public void setManufacture(String manufacture) {
this.manufacture = manufacture;
}
}
Order 实体层及注解
package entity;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
/**
* 订单表
* */
@Entity
@Table(name="t_order")
public class Order {
@Id
@GeneratedValue(generator="seq_order",strategy=GenerationType.SEQUENCE)
@SequenceGenerator(name="seq_order",sequenceName="seq_order",allocationSize=1,initialValue=1)
private Integer id;//订单号
@Column
private String name;//收货人
@Column
private String address;//收货地址
@Column
private Date createTime;//订单创建时间
@OneToMany
@Cascade(CascadeType.SAVE_UPDATE)
@JoinColumn(name="order_id")
private Set<OrderDetail> details=new HashSet<OrderDetail>();
public Order() {
}
public Order(String name, String address, Date createTime) {
this.name = name;
this.address = address;
this.createTime = createTime;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public Set<OrderDetail> getDetails() {
return details;
}
public void setDetails(Set<OrderDetail> details) {
this.details = details;
}
}
OrderDetail 实体层及注解
package entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
/**
* 订单明细表
* */
@Entity
@Table
public class OrderDetail {
@Id
@GeneratedValue(generator="seq_orderDetail",strategy=GenerationType.SEQUENCE)
@SequenceGenerator(name="seq_orderDetail",sequenceName="seq_orderDetail",allocationSize=1,initialValue=1)
private Integer id;//订单明细编号
@Column(nullable=false)
private Integer amount;//商品数量
@ManyToOne(targetEntity=Goods.class)
@JoinColumn(name="goods_id")
private Goods goods;
@ManyToOne(targetEntity=Order.class)
@JoinColumn(name="order_id")
private Order order;
public OrderDetail() {
}
public OrderDetail(Integer amount, Goods goods, Order order) {
super();
this.amount = amount;
this.goods = goods;
this.order = order;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getAmount() {
return amount;
}
public void setAmount(Integer amount) {
this.amount = amount;
}
public Goods getGoods() {
return goods;
}
public void setGoods(Goods goods) {
this.goods = goods;
}
public Order getOrder() {
return order;
}
public void setOrder(Order order) {
this.order = order;
}
}
GoodsDao 数据访问层接口与实现
package dao;
import java.util.List;
import org.hibernate.HibernateException;
import entity.Goods;
/**
* 商品数据访问层接口
* */
public interface GoodsDao {
//获取所有商品的信息
public List<Goods> getAll() throws HibernateException;
//根据多个id获取商品信息
public List<Goods> getGoodsByIds(Integer[] ids) throws HibernateException;
//保存订单
public void saveOrder(List<Goods> goodsList,Integer[] amounts,String name,String address);
}
package dao.impl;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import tool.Tool;
import util.HibernateSessionFactory;
import entity.Goods;
import entity.Order;
import entity.OrderDetail;
import dao.GoodsDao;
/**
* 商品数据访问层实现
* */
public class GoodsDaoImpl implements GoodsDao {
//获取所有商品的信息
@SuppressWarnings("unchecked")
public List<Goods> getAll() throws HibernateException {
String hql="from Goods";
List<Goods> goods=null;
Session session=HibernateSessionFactory.getSession();
Query query=session.createQuery(hql);
goods=query.list();
HibernateSessionFactory.closeSession();
return goods;
}
//根据多个id获取商品信息
public List<Goods> getGoodsByIds(Integer[] ids) throws HibernateException {
String hql="from Goods where id=:id";
List<Goods> goods=new ArrayList<Goods>();
Session session=HibernateSessionFactory.getSession();
for (int i=0; i<ids.length; i++) {
Query query=session.createQuery(hql);
query.setInteger("id", ids[i]);
goods.add((Goods)query.uniqueResult());
}
HibernateSessionFactory.closeSession();
return goods;
}
//保存订单
public void saveOrder(List<Goods> goodsList,Integer[] amounts,String name,String address){
Session session=HibernateSessionFactory.getSession();
Order order=new Order(name,address,new Date());
Transaction tx=null;
try {
tx=session.beginTransaction();
Tool.oId = (Integer) session.save(order);
for(int i=0; i<amounts.length; i++){
OrderDetail detail = new OrderDetail(amounts[i], goodsList.get(i), order);
Integer odId =(Integer) session.save(detail);
Tool.odIds.add(odId);
}
tx.commit();
} catch (HibernateException e) {
e.printStackTrace();
tx.rollback();
}finally{
HibernateSessionFactory.closeSession();
}
}
}
OrderDao 数据访问层接口与实现
package dao;
import org.hibernate.HibernateException;
import entity.Order;
/**
* 订单数据访问层接口
* */
public interface OrderDao {
//根据id获取订单信息
public Order getOrderByIds(Integer oId) throws HibernateException;
}
package dao.impl;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import util.HibernateSessionFactory;
import dao.OrderDao;
import entity.Order;
/**
* 订单数据访问层实现
* */
public class OrderDaoImpl implements OrderDao {
public Order getOrderByIds(Integer oId) throws HibernateException {
String hql="from Order where id =:oId";
Order order=null;
Session session=HibernateSessionFactory.getSession();
Query query=session.createQuery(hql);
query.setInteger("oId", oId);
order = (Order) query.uniqueResult();
HibernateSessionFactory.closeSession();
return order;
}
}
OrderDetailDao 数据访问层接口与实现