一、mybatis实现批量删除

void deleteId(@Param("ids") String ids);

<delete id="deleteId">
        delete from t_user where id in (${ids})
    </delete>

@Test
    public void test16() {
        SqlSession sqlSession = SqlSessionUtils.getSqlSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
         mapper.deleteId("2,4,5");
    }