List<MainDataMd0006PO> listpo = BeanUtils.transferList(mainDataMd0006Params, MainDataMd0006PO.class);

        //查询 存在的--根据批次编码
        List<MainDataMd0006PO> listup = mainDataMd0006Service.selectBatchIds(listpo);


        // 交集 (list1 & list2) 取list1 表的数据
        List<MainDataMd0006PO> listupdate =
                listpo.stream().filter(item -> listup.stream().map(up -> up.getPOSID()).collect(
                        Collectors.toList()).contains(item.getPOSID())).collect(Collectors.toList());

        listupdate.stream().forEach(update -> listup.stream().filter(up -> Objects.equals(update.getPOSID(), up.getPOSID())).
                findAny().ifPresent(up -> update.setId(up.getId())));


        // 差集 (list1 - list2)
        List<MainDataMd0006PO> listadd =
                listpo.stream().filter(item -> !listup.stream().map(up -> up.getPOSID()).collect(
                        Collectors.toList()).contains(item.getPOSID())).collect(Collectors.toList());