## 配置一对多关系 Customer类: ~~~ //配置一对多关系 //targetEntity:对面的字节码文件类. mappedBy:自己在对面的属性名,出现在哪一方意味着哪一方不去维护外键了 @OneToMany(targetEntity = Linkman.class, mappedBy = "customer") private Set<Linkman> linkmens = new HashSet<>(); ~~~ Linkman类: ~~~ //对方字节码文件 @ManyToOne(targetEntity = Customer.class) //name:外键字段名.referencedColumnName:指向的主键字段名 @JoinColumn(name = "cust_id",referencedColumnName = "cust_id") private Customer customer; ~~~