用MyBatis实现表的一对多关联查询

package ys; import java.util.List; public class Grades { private Integer gid; private String gname; private Teacher teacher; private List<Student> students; public Integer getGid() { return gid; } public void setGid(Integer gid) { this.gid = gid; } public String getGname() { return gname; } public void setGname(String gname) { this.gname = gname; } public Teacher getTeacher() { return teacher; } public void setTeacher(Teacher teacher) { this.teacher = teacher; } public List<Student> getStudents() { return students; } public void setStudents(List<Student> students) { this.students = students; } @Override public String toString() { return "Grades [gid=" + gid + ", gname=" + gname + ", teacher=" + teacher + ", students=" + students + "]"; } }