摘要:
:双向一对多关系,一是关系维护端(owner side),多是关系被维护端(inverse side)。在关系被维护端需要通过@JoinColumn建立外键列指向关系维护端的主键列。publicclass Order implements Serializable {privateSet<OrderItem> orderItems = new HashSet<OrderItem>();。。。。@OneToMany(mappedBy="order",cascade = CascadeType.ALL, fetch = FetchType.LAZY)@O 阅读全文