SKU生成

    public static List descartes(List... lists) {
        List tempList = new ArrayList<>();
        for (List list : lists) {
            if (tempList.isEmpty()) {
                tempList = list;
            } else {
//java8新特性，stream流
                tempList = tempList.stream().flatMap(item -> list.stream().map(item2 -> item + " " + item2)).collect(Collectors.toList());
            }
        }
        return tempList;
    }

test

    public static void main(String[] args) {
        List colorList = Arrays.asList("红色", "黑色", "金色");
        List sizeList = Arrays.asList("32G", "64G");
        List placeList = Arrays.asList("国产", "进口");

        List descartesList = descartes(colorList, sizeList, placeList);
        descartesList.forEach(System.out::println);

    }