Hibernate一对多关联双向关联代码实现分享

1、创建实体类（Customer.java、Orders.java）

复制代码 代码如下:

package wck.stu.vo.oneToMany_single;

import java.util.HashSet;
import java.util.Set;

public class Customer {
    private String id = "";

    private String cName = "";

    private String bank = "";

    private String phone = "";

    private Set orders = new HashSet();

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getcName() {
        return cName;
    }

    public void setcName(String cName) {
        this.cName = cName;
    }

    public String getBank() {
        return bank;
    }

    public void setBank(String bank) {
        this.bank = bank;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public Set getOrders() {
        return orders;
    }

    public void setOrders(Set orders) {
        this.orders = orders;
    }

   
}

Customer.java

复制代码 代码如下:

package wck.stu.vo.oneToMany_single;

public class Orders {
    private String id = "";

    private String orderNo = "";

    private Double money = 0.0;

    private Customer customer;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getOrderNo() {
        return orderNo;
    }

    public void setOrderNo(String orderNo) {
        this.orderNo = orderNo;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

    public Customer getCustomer() {
        return customer;
    }

    public void setCustomer(Customer customer) {
        this.customer = customer;
    }
}

Orders.java

2、配置文件（Customer.hbm.xml、Orders.hbm.xml）

复制代码 代码如下:

    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

   
       
           
           
       
       
       
       
       
       
           
           
       
   

Customer.hbm.xml

复制代码 代码如下:

    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

   
       
           
           
       
       
       
       
   

Orders.hbm.xml

3、测试代码

复制代码 代码如下:

public String saveCustomerInfo() {
        Customer customer = new Customer();
        customer.setcName("清华大学出版社");
        customer.setBank("9559501012356789");
        customer.setPhone("010-62772015");   
        Orders order = new Orders();
        order.setOrderNo(new Long(System.currentTimeMillis()).toString());
        order.setMoney(new Double(rnd.nextDouble()*10000));
        order.setCustomer(customer);
        customer.getOrders().add(order);
        oneToManyDao.saveCustormerInfo(customer);
        return customer.getId();
    }