定義兩個時間

var start = LocalDate.now().atTime(0, 0, 0);var end = LocalDateTime.of(2023, 2, 20, 14, 10, 10);

1：獲取天

var start = LocalDate.now().atTime(0, 0, 0);var end = LocalDateTime.of(2023, 2, 20, 14, 10, 10);for (int i = 0; i <= ChronoUnit.DAYS.between(start, end); i++) {System.out.println(start.plusDays(i));}

輸出

2023-01-10T00:00 2023-01-11T00:00 2023-01-12T00:00 2023-01-13T00:00 ......

2：獲取周（包括周包含的時間）

var start = LocalDate.now().atTime(0, 0, 0);LocalDateTime end = LocalDateTime.of(2024, 1, 20, 14, 10, 10);// 幾周， 每周是哪幾天LocalDateTime tmp =LocalDateTime.of(LocalDate.from(start.minusDays(start.getDayOfWeek().getValue() - 1)), LocalTime.MIN);ChronoUnit unit = ChronoUnit.WEEKS;DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd");// 用于轉(zhuǎn)換 周結(jié)束日期TemporalAdjuster LAST_OF_WEEK = TemporalAdjusters.ofDateAdjuster(localDate -> localDate.plusDays(DayOfWeek.SUNDAY.getValue() - localDate.getDayOfWeek().getValue()));Map<Long, List<String>> weekMap =new HashMap<>();while (tmp.isBefore(end) || tmp.isEqual(end)) {// 求 tmp 是哪一周LocalDateTime endWeek = tmp.with(LAST_OF_WEEK); //開始周結(jié)束日期List<String> list = new ArrayList<>();weekMap.put(tmp.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(), list);while (tmp.isBefore(endWeek) || tmp.isEqual(endWeek)) {list.add(tmp.format(formatter));tmp = tmp.plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0);}}Map<Long, List<String>> result = new LinkedHashMap<>();//排序weekMap.entrySet().stream().sorted(Map.Entry.comparingByKey()).forEachOrdered(x -> result.put(x.getKey(), x.getValue()));for(Long key:result.keySet()){LocalDateTime keys =LocalDateTime.ofInstant(Instant.ofEpochMilli(key), ZoneId.systemDefault());System.out.println("key="+keys+",vlaue="+result.get(key).toString());}

輸出

key=2023-01-09T00:00,vlaue=[20230109, 20230110, 20230111, 20230112, 20230113, 20230114, 20230115] key=2023-01-16T00:00,vlaue=[20230116, 20230117, 20230118, 20230119, 20230120, 20230121, 20230122] key=2023-01-23T00:00,vlaue=[20230123, 20230124, 20230125, 20230126, 20230127, 20230128, 20230129] key=2023-01-30T00:00,vlaue=[20230130, 20230131, 20230201, 20230202, 20230203, 20230204, 20230205] ......

總結(jié)

以上是生活随笔為你收集整理的通过两个时间获取之间的天/周（周包含的时间）的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

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