java8 获取近30天 12个月

最新推荐文章于 2024-08-09 03:58:43 发布

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#java #开发语言

本文介绍如何使用Java中的LocalDate和LocalDateTime类来获取指定时间段内的日期集合，包括过去30天和12个月的具体实现。

30天

        LocalDate localDate = LocalDate.now();
 
        LocalDate afterDate = localDate.minusDays(30);
 
        // 获取倒数30天
        List<LocalDateTime> localDateTimes = new ArrayList<>(30);
        for (LocalDate currentdate = afterDate; currentdate.isBefore(localDate) || currentdate.isEqual(localDate); currentdate = currentdate.plusDays(1)) {
            localDateTimes.add(LocalDateTime.of(currentdate.getYear(), currentdate.getMonth(), currentdate.getDayOfMonth(), 0, 0));
        }

12个月

        LocalDate localDate = LocalDate.now();
        LocalDate afterDate = localDate.minusMonths(12);
 
        // 获取倒数12个月
        List<LocalDateTime> localDateTimes = new ArrayList<>(30);
        for (LocalDate currentdate = afterDate; currentdate.isBefore(localDate) || currentdate.isEqual(localDate); currentdate = currentdate.plusMonths(1)) {
            localDateTimes.add(LocalDateTime.of(currentdate.getYear(), currentdate.getMonth(), 1, 0, 0));
        }