jdk1.8 利用流字元串轉集合

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List<Long> idList = Arrays.stream(StringUtils.split(ids, ","))
                .map(id -> Long.parseLong(id.trim()))
                .collect(Collectors.toList());

     List<Object> categoryList = new ArrayList<>();
        getAllCategoryResponse.getCategoryList().forEach(byteString -> {
            categoryList.add(byteString.toStringUtf8());
        });