List<FastVerifyUser> newList = userList.stream().sorted(Comparator.comparing(FastVerifyUser::getCreationTime)).collect(Collectors.toList());
verifyUser = newList.get(newList.size() - 1);
Collections.reverse(newList);//反转顺序
FastVerifyUser 根据该bean的 getCreationTime 创建时间属性排序