先在 mapper.xml
中创建一个 mapper:
<mapper namespace="TestMapper">
<select id="selectStudent" resultType="Map">
select * from student
</select>
</mapper>
类型选择 Map。然后在对应的 TestMapper.java
接口中创建抽象方法:
public interface TestMapper {
List<Map> selectStudent();
}
之后在主函数中调用即可生成:
try (SqlSession sqlSession = MybatisUtil.getSqlSession(true)){
//暂时还没有业务
TestMapper testMapper = sqlSession.getMapper(TestMapper.class);
List<Map> student = testMapper.selectStudent();
student.forEach(System.out::println);
}