map中的循环遍历

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Map<String, CmmodityItem> cmmodityItemss =
                    cmmodityItem.stream().collect(Collectors.toMap(CmmodityItem::getDataId, temp -> temp, (e1, e2) -> e2));
            List<CmmodityItem> cmmodityItemList = new ArrayList<>();
            for (Map.Entry<String, CmmodityItem> entry : cmmodityItemss.entrySet()) {
                CmmodityItem value = entry.getValue();
                cmmodityItemList.add(value);
            }

        }