求问大神以下方法有没有办法优化，看着太伤眼了

Question

    List<TbHoursDataDto> dataArrangement(List<TbHoursDataDto> dataList, List<TbHoursDataDto> qualityIndexList){
        for (TbHoursDataDto dto: dataList) {
            List<TbHoursDataDto> indexs=qualityIndexList.stream().filter(index -> index.getStationId().equals(dto.getStationId())).collect(Collectors.toList());

            //空气质量
            List<QualityIndexDto> so2List = new ArrayList<>();
            List<QualityIndexDto> no2List = new ArrayList<>();
            List<QualityIndexDto> pm10List = new ArrayList<>();
            List<QualityIndexDto> coList = new ArrayList<>();
            List<QualityIndexDto> o3List = new ArrayList<>();
            List<QualityIndexDto> pm25List = new ArrayList<>();

            //浓度
            List<QualityIndexDto> so2IaqiList = new ArrayList<>();
            List<QualityIndexDto> no2IaqiList = new ArrayList<>();
            List<QualityIndexDto> pm10IaqiList = new ArrayList<>();
            List<QualityIndexDto> coIaqiList = new ArrayList<>();
            List<QualityIndexDto> o3IaqiList = new ArrayList<>();
            List<QualityIndexDto> pm25IaqiList = new ArrayList<>();

            for (TbHoursDataDto i: indexs) {
                QualityIndexDto quality=null;

                //空气质量
                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getSo21h());
                so2List.add(quality);
                dto.setSo2List(so2List);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getNo21h());
                no2List.add(quality);
                dto.setNo2List(no2List);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getPm101h());
                pm10List.add(quality);
                dto.setPm10List(pm10List);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getCo1h());
                coList.add(quality);
                dto.setCoList(coList);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getO31h());
                o3List.add(quality);
                dto.setO3List(o3List);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getPm251h());
                pm25List.add(quality);
                dto.setPm25List(pm25List);

                //浓度
                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getSo21hIaqi());
                so2IaqiList.add(quality);
                dto.setSo2IaqiList(so2IaqiList);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getNo21hIaqi());
                no2IaqiList.add(quality);
                dto.setNo2IaqiList(no2IaqiList);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getPm101hIaqi());
                pm10IaqiList.add(quality);
                dto.setPm10IaqiList(pm10IaqiList);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getCo1hIaqi());
                coIaqiList.add(quality);
                dto.setCoIaqiList(coIaqiList);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getO31h());
                o3IaqiList.add(quality);
                dto.setO3IaqiList(o3IaqiList);

                quality=new QualityIndexDto();
                quality.setStationId(dto.getStationId());
                quality.setTimePoint(i.getTimePoint());
                quality.setQualityIndex(i.getPm251hIaqi());
                pm25IaqiList.add(quality);
                dto.setPm25List(pm25IaqiList);
            }
        }
        return dataList;
    }

Answer 1

可以把第二个循环给讲解一下吗 ，为什么要每次set进去值再添加到list然后再添加到dto如果第二层循环不止一条数据 你这么做不就把第一次循环的已经添加的数据给覆盖了 还是说肯定只有一条数据