Java获取两个日期之间的所有日期集合

1.返回Date的list

private List getBetweenDates(Date start, Date end) {
    List result = new ArrayList();
    Calendar tempStart = Calendar.getInstance();
    tempStart.setTime(start);
    tempStart.add(Calendar.DAY_OF_YEAR, 1);
    
    Calendar tempEnd = Calendar.getInstance();
    tempEnd.setTime(end);
    while (tempStart.before(tempEnd)) {
        result.add(tempStart.getTime());
        tempStart.add(Calendar.DAY_OF_YEAR, 1);
    }
    return result;
}

2.返回yyyy-MM-dd的list

public static List getDays(String startTime, String endTime) {

        // 返回的日期集合
        List days = new ArrayList();

        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date start = dateFormat.parse(startTime);
            Date end = dateFormat.parse(endTime);

            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(start);

            Calendar tempEnd = Calendar.getInstance();
            tempEnd.setTime(end);
            tempEnd.add(Calendar.DATE, +1);// 日期加1(包含结束)
            while (tempStart.before(tempEnd)) {
                days.add(dateFormat.format(tempStart.getTime()));
                tempStart.add(Calendar.DAY_OF_YEAR, 1);
            }

        } catch (ParseException e) {
            e.printStackTrace();
        }

        return days;
    }

 3.获取指定时间的 00:00:00 23:59:59

// 获得某天最大时间 2017-10-15 23:59:59
public static Date getEndOfDay(Date date) {
	LocalDateTime localDateTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(date.getTime()), ZoneId.systemDefault());;
	LocalDateTime endOfDay = localDateTime.with(LocalTime.MAX);
	return Date.from(endOfDay.atZone(ZoneId.systemDefault()).toInstant());
}

// 获得某天最小时间 2017-10-15 00:00:00
public static Date getStartOfDay(Date date) {
	LocalDateTime localDateTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(date.getTime()), ZoneId.systemDefault());
	LocalDateTime startOfDay = localDateTime.with(LocalTime.MIN);
	return Date.from(startOfDay.atZone(ZoneId.systemDefault()).toInstant());
}

本文部分转载自：https://www.cnblogs.com/heqiyoujing/p/9992429.html