Spring data jpa -多对多关系中值的聚合列表

@Entity
public class Student {
    @Id
    private Long id;
    private String name;
    
    @ManyToMany
    @JoinTable(name = "student_course",
            joinColumns = @JoinColumn(name = "student_id"),
            inverseJoinColumns = @JoinColumn(name = "course_id"))
    private List<Course> courses;
    
    // getters and setters
}

@Entity
public class Course {
    @Id
    private Long id;
    private String name;
    
    @ManyToMany(mappedBy = "courses")
    private List<Student> students;
    
    // getters and setters
}

@Entity
@Table(name = "student_course")
public class StudentCourse {
    @Id
    private Long id;
    
    @ManyToOne
    @JoinColumn(name = "student_id")
    private Student student;
    
    @ManyToOne
    @JoinColumn(name = "course_id")
    private Course course;
    
    private Integer score;
    
    // getters and setters
}

public interface StudentCourseRepository extends JpaRepository<StudentCourse, Long> {
    // 可以定义一些自定义的查询方法
}