1.批量查询

通过in查询

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

2.批量删除

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