JDK1.8用stream比較兩個List某個屬性，取出差集

		//過濾直播間已導入的商品
        List<LiveGoods> pageList = page.getList();
        if (EmptyUtils.isNotEmpty(liveGoods)) {
            pageList = pageList.stream().filter(a ->
                    !liveGoods.stream().map(b -> b.getId()).collect(Collectors.toList()).contains(a.getId())
            ).collect(Collectors.toList());
        }