二、一对多（单向）
Bean：
public class Car implements Serializable{ ???private int id ; ???????private String name ; ???????private User user ; ???????????????....}public class User implements Serializable { ???????private int id ; ???????private String name ; ???????private Set<Car> cars ; ???????....}xml配置：
Car.hbm.xml：<class name = "Car"> ???????<!-- id是来配置主键 ?????????????name是类中的哪个属性和主键映射 ????????????generator:表示主键的生成策略 ???????--> ???????<id name = "id"> ???????????<generator class="native" /> ???????</id> ???????<!-- property是用来把类中的属性和表的字段做一一对应 --> ???????<property name="name" /> ???????????</class>User.hbm.xml：<class name = "User"> ???????<!-- id是来配置主键 ?????????????name是类中的哪个属性和主键映射 ????????????generator:表示主键的生成策略 ???????--> ???????<id name = "id"> ???????????<generator class="native" /> ???????</id> ???????<!-- property是用来把类中的属性和表的字段做一一对应 --> ???????<property name="name" /> ???????????????<set name="cars" cascade="all"> ???????????<key column="uid" /> ???????????<one-to-many class="Car"/> ???????</set> ???</class>
annotation配置：
@Entitypublic class Car implements Serializable{ ???@Id @GeneratedValue ???public int getId() { ???????return id; ???}} @Entitypublic class User implements Serializable { ???????@Id @GeneratedValue ???public int getId() { ???????return id; ???} ???@OneToMany(cascade=CascadeType.ALL) ???@JoinColumn(name="uid") ???public Set<Car> getCars() { ???????return cars; ???}}Hibernate映射关系配置（二）
原文地址：http://www.cnblogs.com/hyl-home/p/7576857.html