java List 排序

return proofList
                .stream()
                .sorted(Comparator.comparing(ProofCheckDTO::getAvailable).reversed()
                        .thenComparing(Comparator.comparing(ProofCheckDTO::getPromotionAmount).reversed())
                        .thenComparing(ProofCheckDTO::getEndTime, Comparator.nullsLast(Comparator.naturalOrder()))
                        .thenComparing(ProofCheckDTO::getProofId, Comparator.nullsLast(Comparator.naturalOrder()))
                ).map(proofCheckMeta -> {
                    if (!proofCheckMeta.getAvailable()) {
                        proofCheckMeta.setPromotionAmount(0);
                    }
                    return proofCheckMeta;
                }).collect(Collectors.toList());