hibernate：mappedBy在oneToMany关系中引用未知的目标实体属性

Question

我的代码中有以下结构：

用户有TvShows的收藏列表，TvShow有季节列表，季节有剧集列表。

用户

@Entity
@Table(name = "users")
public class User {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "user_id", updatable = false, nullable = false)
private int id;

@OneToMany(mappedBy = "tvshows", fetch = FetchType.EAGER)
private List<TvShow> favourites;
/// everything else removed for clarity
}

TvShow

@Entity
@Table(name = "tvshows")
public class TvShow {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "tvShow_id", updatable = false, nullable = false)
private int id;

@OneToMany(mappedBy = "tvshows", fetch = FetchType.EAGER)
private List<Season> seasons;
/// everything else removed for clarity
}

季

@Entity
@Table(name = "seasons")
public class Season{

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "season_id", updatable = false, nullable = false)
private int id;

@OneToMany(mappedBy = "seasons", fetch = FetchType.EAGER)
private List<Episode> episodes;
/// everything else removed for clarity
}

应用程序不会从以下错误消息开始：

mappedBy reference an unknown target entity property: com.gcimpoies.project.model.Season.seasons in com.gcimpoies.project.model.TvShow.seasons

另外，

Invocation of init method failed; nested exception is org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: com.gcimpoies.project.model.Season.seasons in com.gcimpoies.project.model.TvShow.seasons

我很确定我只是错过了正确的属性名称（mappedBy的参数），但我不知道我做错了什么。

提前致谢！

Answer 1

您必须在mappedBy内添加的名称是您引用的类的ID。

而不是：

@OneToMany(mappedBy = "tvshows", fetch = FetchType.EAGER)

尝试：

@OneToMany(mappedBy = "id", fetch = FetchType.EAGER)

您也必须为其余的映射执行此操作。