// 判空
// 排序
//映射
//对象list转属性list
List<ActivityDTO> activities = shopActivityTools.list(command, accountId);
List<String> codeList = activities.stream().map(e -> e.getCode()).collect(Collectors.toList());
//对象list转map
List<ActivityStrategyDTO> strategies = validateAndGet(activityServiceFacade.listStrategies(command, codes));
Map<String, ActivityStrategyDTO> codeEntityMap = strategies.stream().collect(Collectors.toMap(e -> e.getCode(), e -> e));
//序列化