两个实体类，Album类（一）对PictureList类(多)

• 下面是Album类
  1、@OneToMany和@JoinColumn注解只能放在私有属性下面
  2、JoinColumn中的name为“多”对象的外键名称
  3、两者的联系是通过List对象联系的

@Entity
@Data
public class Album {
    @GeneratedValue
    @Id
    private Integer id;
    private String albumCover;
    private String albumTitle;
    private String albumDescription;
    private Integer likes;


    @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.REMOVE)
    @JoinColumn(name = "picture_id")

    private List<PictureList> pictureList = new ArrayList<>();


    public Album() {
    }

• 下面是PictureList类

@Entity
@Data
public class PictureList {
    @GeneratedValue
    @Id
    private Integer id;
    private String pictureTitle;
    private String pictureRoad;

    public PictureList(String pictureTitle, String pictureRoad) {
        this.pictureTitle = pictureTitle;
        this.pictureRoad = pictureRoad;
    }

    public PictureList() {
    }
}

• 在编写时需要注意细节，注意点都要标注