Hibernate使用JPA实现一对多配置

直接上代码，以下省略set和get方法

@Entity@Table(name="t_customer")public class Customer{@Id@Column(name="cust_id")@GenericGenerator(name="sysnative",strategy="native")@GeneratedValue(generator="sysnative")private Long custId;@Column(name="cust_name")private String custName;@Column(name="cust_sex")private String custSex;//mappedBy="customer" 外键映射,放弃外键维护@OneToMany(targetEntity=Linkman.class,mappedBy="customer",cascade={CascadeType.ALL})//默认放弃外键维护private Set<Linkman> linkmans = new HashSet<Limkman>();}

@Entity@Table(name="t_limkman")public class Linkman{@Id@Column(name="lkm_id")@GenericGenerator(name="sysnative",strategy="native")@GeneratedValue(generator="sysnative")private Long lkmId;@Column(name="lkm_name")private String lkmName;//另一方的字节码对象@ManyToOne(targetEntity=Customer.class)//referencedColumnName="cust_id" 另一个表的主键字段名称@JoinColumn(name="lkm_cust_id",referencedColumnName="cust_id")private Customer customer;}

一对多中，一的一方默认延迟加载，多的一方默认立即加载