我正在尝试使用复合主键在学生和教学类(class)之间创建多对多关系:我的类(class):@Entity@Table(name="Student_mtm_cId")publicclassStudent{privateStringid;privateSetteachingClasses=newHashSet();@OneToMany(fetch=FetchType.LAZY,mappedBy="pk.student")publicSetgetTeachingClasses(){returnteachingClasses;}publicvoidsetTeachingClasses(Set
