Hibernate一对多关联------双向关联（亲测成功）

1、创建实体类（Customer.java、Orders.java）

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
 1  package wck.stu.vo.oneToMany_single;
 2 
 3 public class Orders {
 4     private String id = "";
 5     
 6     private String orderNo = "";
 7     
 8     private Double money = 0.0;
 9     
10     private Customer customer;
11 
12     public String getId() {
13         return id;
14     }
15 
16     public void setId(String id) {
17         this.id = id;
18     }
19 
20     public String getOrderNo() {
21         return orderNo;
22     }
23 
24     public void setOrderNo(String orderNo) {
25         this.orderNo = orderNo;
26     }
27 
28     public Double getMoney() {
29         return money;
30     }
31 
32     public void setMoney(Double money) {
33         this.money = money;
34     }
35 
36     public Customer getCustomer() {
37         return customer;
38     }
39 
40     public void setCustomer(Customer customer) {
41         this.customer = customer;
42     }
43 }
Orders.java


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

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE hibernate-mapping PUBLIC 
 3     "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
 4     "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 5 
 6 <hibernate-mapping>
 7     <class name="wck.stu.vo.oneToMany_single.Customer" table="CUSTOMER">
 8         <id name="id" type="java.lang.String">
 9             <column name="C_ID" length="32" not-null="true"></column>
10             <generator class="uuid.hex"></generator>
11         </id>
12         <property column="CNAME" name="cName" type="string" length="100"/>
13         <property column="BANK" name="bank" type="string" length="100"/>
14         <property column="PHONE" name="phone" type="string" length="20"/>
15         <!--一对多双向关联映射customer到orders，单的一方配置 -->
16         <set cascade="all" inverse="true" lazy="false" name="orders">
17             <key column="CUSTOMER_ID" />
18             <one-to-many class="wck.stu.vo.oneToMany_single.Orders" />
19         </set>
20     </class>
21 </hibernate-mapping>
Customer.hbm.xml
 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE hibernate-mapping PUBLIC 
 3     "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
 4     "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 5 
 6 <hibernate-mapping>
 7     <class name="wck.stu.vo.oneToMany_single.Orders" table="ORDERS">
 8         <id name="id" type="java.lang.String">
 9             <column name="C_ID" length="32" not-null="true"></column>
10             <generator class="uuid.hex"></generator>
11         </id>
12         <property column="ORDERNO" name="orderNo" type="java.lang.String" length="17"/>
13         <property column="MONEY" name="money" type="java.lang.Double" />
14         <many-to-one name="customer" class="wck.stu.vo.oneToMany_single.Customer" column="CUSTOMER_ID" cascade="all" lazy="false" not-null="true"/>
15     </class>
16 </hibernate-mapping>
Orders.hbm.xml


3、测试代码

 1     public String saveCustomerInfo() {
 2         Customer customer = new Customer();
 3         customer.setcName("清华大学出版社");
 4         customer.setBank("9559501012356789");
 5         customer.setPhone("010-62772015");    
 6         Orders order = new Orders();
 7         order.setOrderNo(new Long(System.currentTimeMillis()).toString());
 8         order.setMoney(new Double(rnd.nextDouble()*10000));
 9         order.setCustomer(customer);
10         customer.getOrders().add(order);
11         oneToManyDao.saveCustormerInfo(customer);
12         return customer.getId();
13     }

 

posted on 2013-12-23 16:06  完w美c人k生  阅读(533)  评论(0)    收藏  举报