org.joda.time.Duration#getStandardDays ( )源码实例Demo

/**
 * 获得两个时间点之间的时间跨度
 * 
 * @param time1
 *            开始的时间点
 * @param time2
 *            结束的时间点
 * @param timeUnit
 *            跨度的时间单位 see {@link JodaTime}
 *            （支持的时间单位有DAY,HOUR,MINUTE,SECOND,MILLI）
 */
public static long lengthBetween(DateTime time1, DateTime time2,
		DurationFieldType timeUnit) {
	Duration duration = Days.daysBetween(time1, time2).toStandardDuration();
	if (timeUnit == JodaTime.DAY) {
		return duration.getStandardDays();
	} else if (timeUnit == JodaTime.HOUR) {
		return duration.getStandardHours();
	} else if (timeUnit == JodaTime.MINUTE) {
		return duration.getStandardMinutes();
	} else if (timeUnit == JodaTime.SECOND) {
		return duration.getStandardSeconds();
	} else if (timeUnit == JodaTime.MILLI) {
		return duration.getMillis();
	} else {
		throw new RuntimeException(
				"TimeUnit not supported except DAY,HOUR,MINUTE,SECOND,MILLI");
	}
}
 

/**
 * Convert duration to an representation accepted by Configuration parser.
 * @param duration A duration.
 * @return A StringBuilder with the string representation of the duration.
 */
public static StringBuilder durationConfigString(Duration duration) {
    Duration remainder = duration;

    long days = remainder.getStandardDays();
    remainder = remainder.minus(Duration.standardDays(days));

    long hours = remainder.getStandardHours();
    remainder = remainder.minus(Duration.standardHours(hours));

    long minutes = remainder.getStandardMinutes();
    remainder = remainder.minus(Duration.standardMinutes(minutes));

    long seconds = remainder.getStandardSeconds();
    remainder = remainder.minus(Duration.standardSeconds(seconds));

    if (!remainder.isEqual(Duration.ZERO))
        Logger.getLogger(ConfigSupport.class.getName()).log(Level.WARNING, "Duration is more precise than configuration will handle: {0}, dropping remainder: {1}", new Object[]{duration, remainder});

    StringBuilder result = new StringBuilder();
    if (days != 0) {
        if (result.length() != 0) result.append(' ');
        result.append(days).append('d');
    }
    if (hours != 0) {
        if (result.length() != 0) result.append(' ');
        result.append(hours).append('h');
    }
    if (minutes != 0) {
        if (result.length() != 0) result.append(' ');
        result.append(minutes).append('m');
    }
    if (result.length() == 0 || seconds != 0) {
        if (result.length() != 0) result.append(' ');
        result.append(seconds).append('s');
    }

    return result;
}
 

public static void humanizeDate(long instantMs, long baseMs, String tzId, boolean showSeconds, StringBuilder buf) {
  DateTimeZone timeZone = DateTimeZone.forID(tzId);
  int offset = timeZone.getOffset(instantMs);
  Duration delta = new Duration(baseMs - instantMs + offset);

  int days = (int)delta.getStandardDays();
  int years = (int)Math.floor(days / 365.0);
  if (years > 0) {
    humanizeDatePlural(years, DatePartType.YEAR, buf);
    return;
  }
  int months = (int)Math.floor(days / 30.0);
  if (months > 0) {
    humanizeDatePlural(months, DatePartType.MONTH, buf);
    return;
  }
  int weeks = (int)Math.floor(days / 7.0);
  if (weeks > 0) {
    humanizeDatePlural(weeks, DatePartType.WEEK, buf);
    return;
  }
  if (days > 0) {
    humanizeDatePlural(days, DatePartType.DAY, buf);
    return;
  }
  int hours = (int)delta.getStandardHours();
  if (hours > 0) {
    humanizeDatePlural(hours, DatePartType.HOUR, buf);
    return;
  }
  int mins = (int)delta.getStandardMinutes();
  if (mins > 0) {
    humanizeDatePlural(mins, DatePartType.MINUTE, buf);
    return;
  }
  int secs = (int)delta.getStandardSeconds();
  if (showSeconds) {
    humanizeDatePlural(secs, DatePartType.SECOND, buf);
    return;
  }
  buf.append("less than a minute ago");
}