Java时间处理：获取今天昨天前天本周上周上上周时间段

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#Java #时间处理 #时间段 #Calendar #TimeInMillis

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本文介绍了一种通过Java的Calendar类获取特定日期范围开始和结束时间戳的方法，包括今天、昨天、前天、本周、上周及上上周的时间帧，适用于日志分析、数据统计等场景。

获取今天开始和现在的时间戳

    public static long[] getTodayTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        frames[1] = calendar.getTimeInMillis(); // 当前时间戳
        calendar.set(Calendar.HOUR_OF_DAY, 0); // 24小时制
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        frames[0] = calendar.getTimeInMillis(); // 今日0时的时间戳
        return frames;
    }

获取今天开始和结束的时间戳

    public static long[] getTodayTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        frames[0] = calendar.getTimeInMillis(); // 今日0时的时间戳
        frames[1] = frames[0] + 86400000 - 1; // 明日0时前的时间戳，86400000是24小时的毫秒数
        return frames;
    }

获取昨天开始和结束的时间戳

    public static long[] getYesterdayTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        frames[1] = calendar.getTimeInMillis()-1;
        frames[0] = calendar.getTimeInMillis() - 86400000;
        return frames;
    }

获取前天开始和结束的时间戳

    public static long[] getBeforYesterdayTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        frames[1] = calendar.getTimeInMillis() - 86400001;
        frames[0] = calendar.getTimeInMillis() - 172800000;
        return frames;
    }

获取本周开始到现在的时间戳

    public static long[] getThisWeekTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        frames[1] = calendar.getTimeInMillis();
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        frames[0] = calendar.getTimeInMillis();
        return frames;
    }

获取上周开始到结束的时间戳

    public static long[] getLastWeekTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        frames[1] = calendar.getTimeInMillis();
        calendar.add(Calendar.DAY_OF_WEEK, -7);
        frames[0] = calendar.getTimeInMillis();
        return frames;
    }

获取上上周开始到结束的时间戳

    public static long[] getBeforeLastWeekTimeFrame() {
        Calendar calendar = Calendar.getInstance();
        long[] frames = new long[]{0, 0};
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        calendar.add(Calendar.DAY_OF_WEEK, -7);
        frames[1] = calendar.getTimeInMillis();
        calendar.add(Calendar.DAY_OF_WEEK, -7);
        frames[0] = calendar.getTimeInMillis();
        return frames;
    }