多对一例子：用户与部门是多对一User类public class User {
private int id;
private String userName;
private Department department;
......
}
Department类public class Department {
private int id;
pr
表结构： public class Teacher { private int id; private String name; // 一个老师多个学生 private List<Student> student; } public class Student { private int id; p ...
