每分钟一个时间点

  public  static  void main(String[] arg){

        System.out.println("qi yun");
        Map<Long, Double> map = new HashMap<>();
        Date now = new Date();
        List<MonitorChartInfVo> result =  packageForMonitorChartInfVo(map,1656297644000L,1656319244000L,60 * 1000);
        SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
      //  String dateStr = fmt.format(new Date());
        result.forEach(s -> {
            System.out.println( fmt.format(new Date(s.getSamplingTime())));
        });

    }

    //时间聚合
    private static List<MonitorChartInfVo> packageForMonitorChartInfVo(Map<Long, Double> map, Long beginTime, Long endTime, int timeInterval){
        List<MonitorChartInfVo> voList = new LinkedList<>();
        int periodSecond = timeInterval;
        int aggregationTimes = 0;
        long timeIndex = beginTime;
        //一段时间里数据的总和
        //Double aggregationSumBytes = 0.0;
        Double dataForEveryInterval = null;

        while (timeIndex <= endTime) {
            Double sumBytes = map.getOrDefault((timeIndex), 0.0);
            aggregationTimes += 1;
            //用于筛选
            Double everyTimeData = map.get(timeIndex);
            if(everyTimeData != null ){
                dataForEveryInterval = everyTimeData;
            }

            if (aggregationTimes == periodSecond / (60000)) {
                if( null == dataForEveryInterval){
                    voList.add(new MonitorChartInfVo(sumBytes, (timeIndex)));
                }else{
                    voList.add(new MonitorChartInfVo(dataForEveryInterval, (timeIndex)));
                }
                aggregationTimes = 0;
                dataForEveryInterval = null;
            }
            timeIndex += 60000;
        }
        return voList;
    }



    public static class MonitorChartInfVo {
        //采样时间
        private Long samplingTime;

        //数据
        private Double traffic;

        public MonitorChartInfVo(Double traffic, Long samplingTime) {
            this.traffic = traffic;
            this.samplingTime = samplingTime;
        }

        public Long getSamplingTime() {
            return samplingTime;
        }

        public void setSamplingTime(Long samplingTime) {
            this.samplingTime = samplingTime;
        }

        public Double getTraffic() {
            return traffic;
        }

        public void setTraffic(Double traffic) {
            this.traffic = traffic;
        }
    }