[Java知识库]Java获得两个日期之间的所有年、月份、日

 /**
     * 获取两个时间段的时间段值
     * @param startTime 开始时间
     * @param endTime 结束时间
     * @param typeEnum 时间类型枚举
     * @return
     */
    protected static List<String> getTimePeriodFromTwoTime(Long startTime, Long endTime, TimeTypeEnum typeEnum) {
        LocalDate start = Instant.ofEpochMilli(startTime).atZone(ZoneOffset.ofHours(8)).toLocalDate();
        LocalDate end = Instant.ofEpochMilli(endTime).atZone(ZoneOffset.ofHours(8)).toLocalDate();

        List<String> result = new ArrayList<>();

        // 年
        if (typeEnum.getType().equals(TimeTypeEnum.YEAR.getType())) {
            Year startyear = Year.from(start);
            Year endYear = Year.from(end);
            // 包含最后一个时间
            for (long i = 0; i <= ChronoUnit.YEARS.between(startyear, endYear); i++) {
                result.add(startyear.plusYears(i).toString());
            }
        }
        // 月
        else if (TimeTypeEnum.MONTH.getType().equals(typeEnum.getType())) {
            YearMonth from = YearMonth.from(start);
            YearMonth to = YearMonth.from(end);
            for (long i = 0; i <= ChronoUnit.MONTHS.between(from, to); i++) {
                result.add(from.plusMonths(i).toString());
            }
        }
        // 日
        else {
            for (long i = 0; i <= ChronoUnit.DAYS.between(start, end); i++) {
                result.add(start.plus(i, ChronoUnit.DAYS).toString());
            }
        }
        return result;
    }

获取两个时间之间的日期

    public static void main(String[] args) {
        LocalDate start = LocalDate.of(2022, 1, 1);
        LocalDate end = LocalDate.of(2022, 1, 15);
        long timstrap = start.atStartOfDay(ZoneOffset.ofHours(8)).toInstant().toEpochMilli();
        long endtime = end.atStartOfDay(ZoneOffset.ofHours(8)).toInstant().toEpochMilli();
        for (String s : getTimePeriodFromTwoTime(timstrap, endtime, TimeTypeEnum.DAY)) {
            System.out.println(s);
        }
    }
2022-01-01
2022-01-02
2022-01-03
2022-01-04
2022-01-05
2022-01-06
2022-01-07
2022-01-08
2022-01-09
2022-01-10
2022-01-11
2022-01-12
2022-01-13
2022-01-14
2022-01-15

获取两个时间之间的月份

    public static void main(String[] args) {
        LocalDate start = LocalDate.of(2022, 1, 1);
        LocalDate end = LocalDate.of(2022, 5, 31);
        long timstrap = start.atStartOfDay(ZoneOffset.ofHours(8)).toInstant().toEpochMilli();
        long endtime = end.atStartOfDay(ZoneOffset.ofHours(8)).toInstant().toEpochMilli();
        for (String s : getTimePeriodFromTwoTime(timstrap, endtime, TimeTypeEnum.MONTH)) {
            System.out.println(s);
        }
    }
2022-01
2022-02
2022-03
2022-04
2022-05

获取两个时间之间的年份

    public static void main(String[] args) {
        LocalDate start = LocalDate.of(2016, 1, 1);
        LocalDate end = LocalDate.of(2022, 3, 31);
        long timstrap = start.atStartOfDay(ZoneOffset.ofHours(8)).toInstant().toEpochMilli();
        long endtime = end.atStartOfDay(ZoneOffset.ofHours(8)).toInstant().toEpochMilli();
        for (String s : getTimePeriodFromTwoTime(timstrap, endtime, TimeTypeEnum.YEAR)) {
            System.out.println(s);
        }
    }
  
2016
2017
2018
2019
2020
2021
2022