数据库中拿最后6条数据

    List<AGongdan> list = aGongdanService.selectAGongdanList(aGongdan);
    List<AGongdan> list1;
    if (list.size() >= 6) {
        list1 = list.stream()
                .skip(list.size() - 6) // Skip the first (size - 6) elements
                .collect(Collectors.toList());

    } else {
        list1 = aGongdanService.selectAGongdanList(aGongdan);
    }
    return getDataTable(list1);