根据当前时间确定统计开始和结束时间

/*
   0-20点计算前一天,21-23计算当天
 */
public void syncDataToOld() {
    String param = XxlJobHelper.getJobParam();
    RangeDTO range = JSON.parseObject(param, RangeDTO.class);
    LocalDateTime startTime = null;
    LocalDateTime endTime = null;

    if (!ObjectUtils.isEmpty(range) && StringUtils.hasText(range.getStartDate()) && StringUtils.hasText(range.getEndDate())) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");

        LocalDateTime start = LocalDateTime.parse(range.getStartDate(), formatter);
        LocalDateTime end = LocalDateTime.parse(range.getEndDate(), formatter);
        startTime = start.with(LocalTime.MIN);
        endTime = end.with(LocalTime.MAX);
    } else {
        LocalDateTime now = LocalDateTime.now();
        if (now.getHour() <= 20) {
            // 20点之前计算前一天 t -1
            now = now.plusDays(-1);
        }
        startTime = now.with(LocalTime.MIN);
        endTime = now.with(LocalTime.MAX);
    }

    XxlJobHelper.log("syncDataToOld范围入参 startTime={}, endTime={}", startTime, endTime);
    syncDataService.syncData(startTime, endTime);

}

根据当前时间确定统计时间集合

/**
 * 
 * 返回时间日期：[2025-03-01, 2025-03-02, 2025-03-03, 2025-03-04]
 */
public static void main(String[] args) {
    SyncRangeDTO syncRange = new SyncRangeDTO();
    syncRange.setStartDate("2025-03-01");
    syncRange.setEndDate("2025-03-04");

    //[2025-03-01, 2025-03-02, 2025-03-03, 2025-03-04]
    System.out.println(getTrackDate(syncRange));
}

/**
 * {
 *   "startDate": "startDate_2435cbe2468b",
 *   "endDate": "endDate_4016aa4551ed"
 * }
 */
private static List<LocalDate> getTrackDate(DateRangeDTO rangeDTO) {
    List<LocalDate> dateList = new ArrayList<>();
    if (ObjectUtils.isEmpty(rangeDTO)) {
        dateList.add(getLocalDate());
    } else {
        String beginDateStr = rangeDTO.getStartDate();
        String endDateStr = rangeDTO.getEndDate();
        if (StringUtils.hasText(beginDateStr) && StringUtils.hasText(endDateStr)) {
            LocalDate beginDate = DateUtils.parseLocalDateTime(DateUtils.YYYY_MM_DD, beginDateStr);
            LocalDate endDate = DateUtils.parseLocalDateTime(DateUtils.YYYY_MM_DD, endDateStr);
            long daysBetween = ChronoUnit.DAYS.between(beginDate, endDate);
            for (int i = 0; i <= daysBetween; i++) {
                dateList.add(beginDate.plusDays(i));
            }
        } else {
            dateList.add(getLocalDate());
        }
    }

    return dateList;
}

private static LocalDate getLocalDate() {
    // from 0 to 23
    int hour = LocalDateTime.now().getHour();
    LocalDate trackDate;
    if (hour <= 21) {
        // 昨天
        trackDate = LocalDate.now().plusDays(-1);
    } else {
        // 当天
        trackDate = LocalDate.now();
    }
    return trackDate;
}

除法：返回百分数

public static String calculatePercent(Integer up, Integer down) {
    try {
        if (up.equals(0) || down.equals(0)) {
            return "0%";
        }
        // 四舍五入
        BigDecimal bigDecimal = new BigDecimal(up).divide(new BigDecimal(down), 5, RoundingMode.HALF_UP)
                .multiply(BigDecimal.valueOf(100));
        //保留2位小数
        BigDecimal precent = bigDecimal.setScale(2, RoundingMode.HALF_UP);
        return precent+"%";
    } catch (Exception e) {
        log.error("计算分数失败，now=【{}】，before=【{}】", up, down, e);
    }
    return "0%";
}