import java.util.List;import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Options;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import com.lfy.bean.User;public interface UserMapper {@Insert("INSERT INTO TB_USER(name,sex,age) VALUES(#{name},#{sex},#{age})")@Options(useGeneratedKeys=true,keyProperty="id")
//    @SelectKey(before=false,keyProperty="id",resultType=Integer.class,
//    statement="SELECT LAST_INSERT_ID() AS id")int saveUser(User user);//@Param指定参数的名称，如果没有，则按顺序对应语句中的参数    @Delete("DELETE FROM TB_USER WHERE id = #{id}")int removeUser(@Param("id") Integer id);@Update("UPDATE TB_USER SET name = #{name},sex = #{sex},age = #{age} WHERE id = #{id}")void modifyUser(User user);//如果属性列的名称一致，可以省略@Result    @Select("SELECT * FROM TB_USER WHERE id = #{id}")@Results({@Result(id=true,column="id",property="id"),@Result(column="name",property="name"),@Result(column="sex",property="sex"),@Result(column="age",property="age")})User selectUserById(@Param("id") Integer id);@Select("SELECT * FROM TB_USER ")List<User> selectAllUser();}

public class InsertTest {public static void main(String[] args) {// 定义SqlSession变量SqlSession sqlSession = null;try {// 创建SqlSession实例sqlSession = FKSqlSessionFactory.getSqlSession();// 创建UserMapper实例UserMapper um = sqlSession.getMapper(UserMapper.class);// 创建User对象并设置属性User user = new User();user.setName("test");user.setSex("男");user.setAge(18);// 插入数据
            um.saveUser(user);// 查看插入数据生成的主键System.out.println("插入数据生成的主键id为：" + user.getId());// 提交事务
            sqlSession.commit();} catch (Exception e) {// 回滚事务
            sqlSession.rollback();e.printStackTrace();}finally {// 关闭SqlSessionif(sqlSession != null) sqlSession.close();}}}

public interface CardMapper {@Select("SELECT * FROM TB_CARD WHERE ID = #{id} ")Card selectCardById(Integer id);}

public interface PersonMapper {//TB_PERSON表中有个字段card_id    @Select("SELECT * FROM TB_PERSON WHERE ID = #{id}")@Results({@Result(id=true,column="id",property="id"),@Result(column="name",property="name"),@Result(column="sex",property="sex"),@Result(column="age",property="age"),@Result(column="card_id",property="card",one=@One(select="com.lfy.mapping.CardMapper.selectCardById",fetchType=FetchType.EAGER))})Person selectPersonById(Integer id);}

public interface StudentMapper {// 根据班级id查询班级所有学生@Select("SELECT * FROM TB_STUDENT WHERE CLAZZ_ID = #{id}")@Results({@Result(id=true,column="id",property="id"),@Result(column="name",property="name"),@Result(column="sex",property="sex"),@Result(column="age",property="age")})List<Student> selectByClazzId(Integer clazz_id);
}

public interface ClazzMapper {// 根据id查询班级信息@Select("SELECT * FROM TB_CLAZZ  WHERE ID = #{id}")@Results({@Result(id=true,column="id",property="id"),@Result(column="code",property="code"),@Result(column="name",property="name"),@Result(column="id",property="students",many=@Many(select="com.lfy.mapping.StudentMapper.selectByClazzId",fetchType=FetchType.LAZY))})Clazz selectById(Integer id);
}

public interface OrderMapper {@Select("SELECT * FROM TB_ORDER WHERE ID = #{id}")@Results({@Result(id=true,column="id",property="id"),@Result(column="code",property="code"),@Result(column="total",property="total"),@Result(column="user_id",property="user",one=@One(select="com.lfy.mapping.UserMapper.selectById",fetchType=FetchType.EAGER)),@Result(column="id",property="articles",many=@Many(select="com.lfy.mapping.ArticleMapper.selectByOrderId",fetchType=FetchType.LAZY))})Order selectById(Integer id);}