开始

1. 构造出两张表

create table if not exists proper(
    id int(8) primary key ,
    name char(16) not null ,
    meg char(32) not null
);
create table if not exists home (
    id int(8) primary key ,
    name char(16) not null ,
    master int(8) not null ,
    foreign key (master) references proper(id)
);

2.在接口中增加一个方法

public int addHome(Home home);

3.在mapper配置文件中编写对应的标签

<insert id="addHome" parameterType="com.example.mybatis.Home">
      insert into home (id, name, master) value (#{id},#{name},#{proper.id})
 </insert>

4. 测试

@Test
	void conTextLoadsHome() throws IOException {
		SqlSessionFactory sqlSessionFactory=SessionFactory.getSessionFactory();
		try (SqlSession sqlSession=sqlSessionFactory.openSession()){
			t1Mapper mapper = sqlSession.getMapper(t1Mapper.class);
			int i = mapper.addHome(new Home(10, "home10", new Proper(1, "a1", "10")));
			System.out.println(i);
			sqlSession.commit();
		}
	}

注意

• 在xml中使用对象中的对象的属性的时候，用对象.属性如：#{proper.id})