创建关系ManyToMany beetwen my Subject table和Group table . 但我对“mappedBy”有疑问
Subject class :
@ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
@Fetch(value = FetchMode.SUBSELECT)
@JoinTable(
name = "ugroup_subject",
joinColumns = @JoinColumn(
name = "subject_id", referencedColumnName = "id"),
inverseJoinColumns = @JoinColumn(
name = "group_id", referencedColumnName = "id")
)
List<Group> groups;
Group class :
@ManyToMany(mappedBy = "group")
private List<Subject> subjects;
这是我的错误：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: com.example.tim.model.Subject.group in com.example.tim.model.Group.subjects
我在哪里弄错了？预先感谢您的帮助 ！
1 回答
错字在这里
将
@ManyToMany(mappedBy = "group")更改为@ManyToMany(mappedBy = "groups")