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:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="wck.stu.vo.oneToMany_single.Customer" table="CUSTOMER">
<id name="id" type="java.lang.String">
<column name="C_ID" length="32" not-null="true"></column>
<generator class="uuid.hex"></generator>
</id>
<property column="CNAME" name="cName" type="string" length="100"/>
<property column="BANK" name="bank" type="string" length="100"/>
<property column="PHONE" name="phone" type="string" length="20"/>
<!--一对多双向关联映射customer到orders，单的一方配置 -->
<set cascade="all" inverse="true" lazy="false" name="orders">
<key column="CUSTOMER_ID" />
<one-to-many class="wck.stu.vo.oneToMany_single.Orders" />
</set>
</class>
</hibernate-mapping>

Customer.hbm.xml

复制代码 代码如下:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="wck.stu.vo.oneToMany_single.Orders" table="ORDERS">
<id name="id" type="java.lang.String">
<column name="C_ID" length="32" not-null="true"></column>
<generator class="uuid.hex"></generator>
</id>
<property column="ORDERNO" name="orderNo" type="java.lang.String" length="17"/>
<property column="MONEY" name="money" type="java.lang.Double" />
<many-to-one name="customer" class="wck.stu.vo.oneToMany_single.Customer" column="CUSTOMER_ID" cascade="all" lazy="false" not-null="true"/>
</class>
</hibernate-mapping>

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();
}