1.批量查询

通过in查询

    @Test
    public void testBatchSelectByIds()
    {
        List<Integer> ids = Arrays.asList(5,7);
        List<User> users = userMapper.selectBatchIds(ids);
        log.info(users);
    }

2.批量删除

    @Test
    public void testBatchDelete()
    {
        List<Integer> ids = Arrays.asList(2,1008613);
        int i = userMapper.deleteBatchIds(ids);
        log.info("受影响的行数",i);
    }