溪中水

  日志表、评论表、用户表   ReportDao.xml <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://www.mybatis.org/dtd/mybatis-3-mapp...

001、属性关联(single) public class Student() { private String name; private Grade grade; //getter/setter Method; } public class Grade() { private String gradeName; ...