如何将毫秒转换为“X分,X秒”;在Java中?

我想使用System.currentTimeMillis()记录用户在程序中开始某件事情时的时间。当他完成时,我将从start变量中减去当前的System.currentTimeMillis(),我想用人类可读的格式显示他们所花费的时间,例如“XX小时,XX分,XX秒”,甚至“XX分,XX秒”,因为它不太可能花费某人一个小时。

最好的方法是什么?

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嗯……一秒是多少毫秒?一分钟后呢?除法没那么难。

int seconds = (int) ((milliseconds / 1000) % 60);
int minutes = (int) ((milliseconds / 1000) / 60);

这样持续几小时、几天、几周、几个月、一年、几十年,等等。

手动除法,或者使用SimpleDateFormat API

long start = System.currentTimeMillis();
// do your work...
long elapsed = System.currentTimeMillis() - start;
DateFormat df = new SimpleDateFormat("HH 'hours', mm 'mins,' ss 'seconds'");
df.setTimeZone(TimeZone.getTimeZone("GMT+0"));
System.out.println(df.format(new Date(elapsed)));

编辑炸弹:在评论中显示,这种方法只适用于更短的持续时间(即少于一天)。

我不会为此引入额外的依赖项(毕竟,除法并不难),但如果你无论如何都在使用Commons Lang,还有DurationFormatUtils

用法示例(改编自在这里):

import org.apache.commons.lang3.time.DurationFormatUtils


public String getAge(long value) {
long currentTime = System.currentTimeMillis();
long age = currentTime - value;
String ageString = DurationFormatUtils.formatDuration(age, "d") + "d";
if ("0d".equals(ageString)) {
ageString = DurationFormatUtils.formatDuration(age, "H") + "h";
if ("0h".equals(ageString)) {
ageString = DurationFormatUtils.formatDuration(age, "m") + "m";
if ("0m".equals(ageString)) {
ageString = DurationFormatUtils.formatDuration(age, "s") + "s";
if ("0s".equals(ageString)) {
ageString = age + "ms";
}
}
}
}
return ageString;
}

例子:

long lastTime = System.currentTimeMillis() - 2000;
System.out.println("Elapsed time: " + getAge(lastTime));


//Output: 2s

请注意:要从两个LocalDateTime对象中获得millis,您可以使用:

long age = ChronoUnit.MILLIS.between(initTime, LocalDateTime.now())

使用java.util.concurrent.TimeUnit类:

String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes(millis),
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))
);

注意:TimeUnit是Java 1.5规范的一部分,但是toMinutes是在Java 1.6中添加的。

为0-9的值添加前导零,只需执行以下操作:

String.format("%02d min, %02d sec",
TimeUnit.MILLISECONDS.toMinutes(millis),
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))
);

如果不支持TimeUnittoMinutes(例如API版本9之前的Android),则使用以下公式:

int seconds = (int) (milliseconds / 1000) % 60 ;
int minutes = (int) ((milliseconds / (1000*60)) % 60);
int hours   = (int) ((milliseconds / (1000*60*60)) % 24);
//etc...

我认为最好的办法是:

String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toSeconds(length)/60,
TimeUnit.MILLISECONDS.toSeconds(length) % 60 );

对于一小时以内的小时间,我更喜欢:

long millis = ...


System.out.printf("%1$TM:%1$TS", millis);
// or
String str = String.format("%1$TM:%1$TS", millis);

对于较长的间隔:

private static final long HOUR = TimeUnit.HOURS.toMillis(1);
...
if (millis < HOUR) {
System.out.printf("%1$TM:%1$TS%n", millis);
} else {
System.out.printf("%d:%2$TM:%2$TS%n", millis / HOUR, millis % HOUR);
}
只是为了增加更多的信息 如果你想格式化为:HH:mm:ss

0 <= HH <=无限

0 <= mm <60

0 <= ss <60

用这个:

int h = (int) ((startTimeInMillis / 1000) / 3600);
int m = (int) (((startTimeInMillis / 1000) / 60) % 60);
int s = (int) ((startTimeInMillis / 1000) % 60);

我只是现在有这个问题,并解决了这个问题

基于@siddhadev的回答,我写了一个将毫秒转换为格式化字符串的函数:

   /**
* Convert a millisecond duration to a string format
*
* @param millis A duration to convert to a string form
* @return A string of the form "X Days Y Hours Z Minutes A Seconds".
*/
public static String getDurationBreakdown(long millis) {
if(millis < 0) {
throw new IllegalArgumentException("Duration must be greater than zero!");
}


long days = TimeUnit.MILLISECONDS.toDays(millis);
millis -= TimeUnit.DAYS.toMillis(days);
long hours = TimeUnit.MILLISECONDS.toHours(millis);
millis -= TimeUnit.HOURS.toMillis(hours);
long minutes = TimeUnit.MILLISECONDS.toMinutes(millis);
millis -= TimeUnit.MINUTES.toMillis(minutes);
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);


StringBuilder sb = new StringBuilder(64);
sb.append(days);
sb.append(" Days ");
sb.append(hours);
sb.append(" Hours ");
sb.append(minutes);
sb.append(" Minutes ");
sb.append(seconds);
sb.append(" Seconds");


return(sb.toString());
}

对于正确的字符串(“1小时,3秒”,“3分钟”,而不是“0小时,0分钟,3秒”),我写这样的代码:

int seconds = (int)(millis / 1000) % 60 ;
int minutes = (int)((millis / (1000*60)) % 60);
int hours = (int)((millis / (1000*60*60)) % 24);
int days = (int)((millis / (1000*60*60*24)) % 365);
int years = (int)(millis / 1000*60*60*24*365);


ArrayList<String> timeArray = new ArrayList<String>();


if(years > 0)
timeArray.add(String.valueOf(years)   + "y");


if(days > 0)
timeArray.add(String.valueOf(days) + "d");


if(hours>0)
timeArray.add(String.valueOf(hours) + "h");


if(minutes>0)
timeArray.add(String.valueOf(minutes) + "min");


if(seconds>0)
timeArray.add(String.valueOf(seconds) + "sec");


String time = "";
for (int i = 0; i < timeArray.size(); i++)
{
time = time + timeArray.get(i);
if (i != timeArray.size() - 1)
time = time + ", ";
}


if (time == "")
time = "0 sec";
long time = 1536259;


return (new SimpleDateFormat("mm:ss:SSS")).format(new Date(time));

打印:

25:36:259

    long startTime = System.currentTimeMillis();
// do your work...
long endTime=System.currentTimeMillis();
long diff=endTime-startTime;
long hours=TimeUnit.MILLISECONDS.toHours(diff);
diff=diff-(hours*60*60*1000);
long min=TimeUnit.MILLISECONDS.toMinutes(diff);
diff=diff-(min*60*1000);
long seconds=TimeUnit.MILLISECONDS.toSeconds(diff);
//hour, min and seconds variables contains the time elapsed on your work

适用于API 9以下的Android

(String.format("%d hr %d min, %d sec", millis/(1000*60*60), (millis%(1000*60*60))/(1000*60), ((millis%(1000*60*60))%(1000*60))/1000))

下面是一个基于Brent Nash的答案,希望有帮助!

public static String getDurationBreakdown(long millis)
{
String[] units = {" Days ", " Hours ", " Minutes ", " Seconds "};
Long[] values = new Long[units.length];
if(millis < 0)
{
throw new IllegalArgumentException("Duration must be greater than zero!");
}


values[0] = TimeUnit.MILLISECONDS.toDays(millis);
millis -= TimeUnit.DAYS.toMillis(values[0]);
values[1] = TimeUnit.MILLISECONDS.toHours(millis);
millis -= TimeUnit.HOURS.toMillis(values[1]);
values[2] = TimeUnit.MILLISECONDS.toMinutes(millis);
millis -= TimeUnit.MINUTES.toMillis(values[2]);
values[3] = TimeUnit.MILLISECONDS.toSeconds(millis);


StringBuilder sb = new StringBuilder(64);
boolean startPrinting = false;
for(int i = 0; i < units.length; i++){
if( !startPrinting && values[i] != 0)
startPrinting = true;
if(startPrinting){
sb.append(values[i]);
sb.append(units[i]);
}
}


return(sb.toString());
}

Joda-Time

使用# EYZ0:

DateTime startTime = new DateTime();


// do something


DateTime endTime = new DateTime();
Duration duration = new Duration(startTime, endTime);
Period period = duration.toPeriod().normalizedStandard(PeriodType.time());
System.out.println(PeriodFormat.getDefault().print(period));

在Java 8中使用java。时间包:

Instant start = Instant.now();
Thread.sleep(63553);
Instant end = Instant.now();
System.out.println(Duration.between(start, end));

输出在ISO 8601持续时间格式: PT1M3.553S(1分3.553秒)中。

最短的解决方案:

这可能是最短的一个,也涉及到时区。

System.out.printf("%tT", millis-TimeZone.getDefault().getRawOffset());

输出例如:

00:18:32

解释:

%tT是24小时制的时间,格式为%tH:%tM:%tS

%tT也接受长值作为输入,所以不需要创建Dateprintf()将简单地打印以毫秒为单位的指定时间,但在当前时区中,因此我们必须减去当前时区的原始偏移量,以便0毫秒将是0小时,而不是当前时区的时间偏移值。

如果你需要结果为String,你可以像这样得到它:

String t = String.format("%tT", millis-TimeZone.getDefault().getRawOffset());

只有当millis小于一天时才会给出正确的结果,因为日期部分不包括在输出中。

如果你知道时间差将小于一个小时,那么你可以使用以下代码:

    Calendar c1 = Calendar.getInstance();
Calendar c2 = Calendar.getInstance();


c2.add(Calendar.MINUTE, 51);


long diff = c2.getTimeInMillis() - c1.getTimeInMillis();


c2.set(Calendar.MINUTE, 0);
c2.set(Calendar.HOUR, 0);
c2.set(Calendar.SECOND, 0);


DateFormat df = new SimpleDateFormat("mm:ss");
long diff1 = c2.getTimeInMillis() + diff;
System.out.println(df.format(new Date(diff1)));

结果是:51:00

这个答案与上面的一些答案相似。然而,我觉得这将是有益的,因为与其他答案不同,这将删除任何额外的逗号或空格,并处理缩写。

/**
* Converts milliseconds to "x days, x hours, x mins, x secs"
*
* @param millis
*            The milliseconds
* @param longFormat
*            {@code true} to use "seconds" and "minutes" instead of "secs" and "mins"
* @return A string representing how long in days/hours/minutes/seconds millis is.
*/
public static String millisToString(long millis, boolean longFormat) {
if (millis < 1000) {
return String.format("0 %s", longFormat ? "seconds" : "secs");
}
String[] units = {
"day", "hour", longFormat ? "minute" : "min", longFormat ? "second" : "sec"
};
long[] times = new long[4];
times[0] = TimeUnit.DAYS.convert(millis, TimeUnit.MILLISECONDS);
millis -= TimeUnit.MILLISECONDS.convert(times[0], TimeUnit.DAYS);
times[1] = TimeUnit.HOURS.convert(millis, TimeUnit.MILLISECONDS);
millis -= TimeUnit.MILLISECONDS.convert(times[1], TimeUnit.HOURS);
times[2] = TimeUnit.MINUTES.convert(millis, TimeUnit.MILLISECONDS);
millis -= TimeUnit.MILLISECONDS.convert(times[2], TimeUnit.MINUTES);
times[3] = TimeUnit.SECONDS.convert(millis, TimeUnit.MILLISECONDS);
StringBuilder s = new StringBuilder();
for (int i = 0; i < 4; i++) {
if (times[i] > 0) {
s.append(String.format("%d %s%s, ", times[i], units[i], times[i] == 1 ? "" : "s"));
}
}
return s.toString().substring(0, s.length() - 2);
}


/**
* Converts milliseconds to "x days, x hours, x mins, x secs"
*
* @param millis
*            The milliseconds
* @return A string representing how long in days/hours/mins/secs millis is.
*/
public static String millisToString(long millis) {
return millisToString(millis, false);
}

我修改了@MyKuLLSKI的回答,增加了多元化支持。我去掉了几秒,因为我不需要它们,如果你需要的话,可以重新添加。

public static String intervalToHumanReadableTime(int intervalMins) {


if(intervalMins <= 0) {
return "0";
} else {


long intervalMs = intervalMins * 60 * 1000;


long days = TimeUnit.MILLISECONDS.toDays(intervalMs);
intervalMs -= TimeUnit.DAYS.toMillis(days);
long hours = TimeUnit.MILLISECONDS.toHours(intervalMs);
intervalMs -= TimeUnit.HOURS.toMillis(hours);
long minutes = TimeUnit.MILLISECONDS.toMinutes(intervalMs);


StringBuilder sb = new StringBuilder(12);


if (days >= 1) {
sb.append(days).append(" day").append(pluralize(days)).append(", ");
}


if (hours >= 1) {
sb.append(hours).append(" hour").append(pluralize(hours)).append(", ");
}


if (minutes >= 1) {
sb.append(minutes).append(" minute").append(pluralize(minutes));
} else {
sb.delete(sb.length()-2, sb.length()-1);
}


return(sb.toString());


}


}


public static String pluralize(long val) {
return (Math.round(val) > 1 ? "s" : "");
}

我已经在另一个回答中覆盖了这一点,但你可以这样做:

public static Map<TimeUnit,Long> computeDiff(Date date1, Date date2) {
long diffInMillies = date2.getTime() - date1.getTime();
List<TimeUnit> units = new ArrayList<TimeUnit>(EnumSet.allOf(TimeUnit.class));
Collections.reverse(units);
Map<TimeUnit,Long> result = new LinkedHashMap<TimeUnit,Long>();
long milliesRest = diffInMillies;
for ( TimeUnit unit : units ) {
long diff = unit.convert(milliesRest,TimeUnit.MILLISECONDS);
long diffInMilliesForUnit = unit.toMillis(diff);
milliesRest = milliesRest - diffInMilliesForUnit;
result.put(unit,diff);
}
return result;
}

输出类似于Map:{DAYS=1, HOURS=3, MINUTES=46, SECONDS=40, MILLISECONDS=0, MICROSECONDS=0, NANOSECONDS=0},单位是有序的。

由您决定如何根据目标语言环境对这些数据进行国际化。

回顾@brent-nash的贡献,我们可以使用模函数代替减法并使用String。结果字符串的格式方法:

  /**
* Convert a millisecond duration to a string format
*
* @param millis A duration to convert to a string form
* @return A string of the form "X Days Y Hours Z Minutes A Seconds B Milliseconds".
*/
public static String getDurationBreakdown(long millis) {
if (millis < 0) {
throw new IllegalArgumentException("Duration must be greater than zero!");
}


long days = TimeUnit.MILLISECONDS.toDays(millis);
long hours = TimeUnit.MILLISECONDS.toHours(millis) % 24;
long minutes = TimeUnit.MILLISECONDS.toMinutes(millis) % 60;
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis) % 60;
long milliseconds = millis % 1000;


return String.format("%d Days %d Hours %d Minutes %d Seconds %d Milliseconds",
days, hours, minutes, seconds, milliseconds);
}

我的简单计算是:

String millisecToTime(int millisec) {
int sec = millisec/1000;
int second = sec % 60;
int minute = sec / 60;
if (minute >= 60) {
int hour = minute / 60;
minute %= 60;
return hour + ":" + (minute < 10 ? "0" + minute : minute) + ":" + (second < 10 ? "0" + second : second);
}
return minute + ":" + (second < 10 ? "0" + second : second);
}

快乐编码:)

这在Java 9中更容易:

    Duration elapsedTime = Duration.ofMillis(millisDiff );
String humanReadableElapsedTime = String.format(
"%d hours, %d mins, %d seconds",
elapsedTime.toHours(),
elapsedTime.toMinutesPart(),
elapsedTime.toSecondsPart());

这会产生一个像0 hours, 39 mins, 9 seconds这样的字符串。

如果你想在格式化前舍入整秒:

    elapsedTime = elapsedTime.plusMillis(500).truncatedTo(ChronoUnit.SECONDS);

如果小时数为0,则省略:

    long hours = elapsedTime.toHours();
String humanReadableElapsedTime;
if (hours == 0) {
humanReadableElapsedTime = String.format(
"%d mins, %d seconds",
elapsedTime.toMinutesPart(),
elapsedTime.toSecondsPart());


} else {
humanReadableElapsedTime = String.format(
"%d hours, %d mins, %d seconds",
hours,
elapsedTime.toMinutesPart(),
elapsedTime.toSecondsPart());
}

现在我们可以使用39 mins, 9 seconds

要打印前导为0的分钟和秒,使它们始终是两位数字,只需在相关的格式说明符中插入02,如下所示:

    String humanReadableElapsedTime = String.format(
"%d hours, %02d mins, %02d seconds",
elapsedTime.toHours(),
elapsedTime.toMinutesPart(),
elapsedTime.toSecondsPart());

现在我们可以使用0 hours, 39 mins, 09 seconds

使用java . util . concurrent。TimeUnit,使用这个简单的方法:

private static long timeDiff(Date date, Date date2, TimeUnit unit) {
long milliDiff=date2.getTime()-date.getTime();
long unitDiff = unit.convert(milliDiff, TimeUnit.MILLISECONDS);
return unitDiff;
}

例如:

SimpleDateFormat sdf = new SimpleDateFormat("yy/MM/dd HH:mm:ss");
Date firstDate = sdf.parse("06/24/2017 04:30:00");
Date secondDate = sdf.parse("07/24/2017 05:00:15");
Date thirdDate = sdf.parse("06/24/2017 06:00:15");


System.out.println("days difference: "+timeDiff(firstDate,secondDate,TimeUnit.DAYS));
System.out.println("hours difference: "+timeDiff(firstDate,thirdDate,TimeUnit.HOURS));
System.out.println("minutes difference: "+timeDiff(firstDate,thirdDate,TimeUnit.MINUTES));
System.out.println("seconds difference: "+timeDiff(firstDate,thirdDate,TimeUnit.SECONDS));

有个问题。当毫秒为59999时,实际上是1分钟,但它将被计算为59秒,损失了999毫秒。

以下是根据之前的答案修改后的版本,可以解决这个损失:

public static String formatTime(long millis) {
long seconds = Math.round((double) millis / 1000);
long hours = TimeUnit.SECONDS.toHours(seconds);
if (hours > 0)
seconds -= TimeUnit.HOURS.toSeconds(hours);
long minutes = seconds > 0 ? TimeUnit.SECONDS.toMinutes(seconds) : 0;
if (minutes > 0)
seconds -= TimeUnit.MINUTES.toSeconds(minutes);
return hours > 0 ? String.format("%02d:%02d:%02d", hours, minutes, seconds) : String.format("%02d:%02d", minutes, seconds);
}

首先,System.currentTimeMillis()Instant.now()不是理想的时机。它们都报告了挂钟时间,而计算机并不能准确地知道这个时间,而且它可能会不规律地移动,例如,如果NTP守护进程纠正了系统时间,则会出现向后。如果你的计时发生在一台机器上,那么你应该使用system . nanotime ()

其次,从Java 8开始,java.time.Duration是表示持续时间的最佳方式:

long start = System.nanoTime();
// do things...
long end = System.nanoTime();
Duration duration = Duration.ofNanos(end - start);
System.out.println(duration); // Prints "PT18M19.511627776S"
System.out.printf("%d Hours %d Minutes %d Seconds%n",
duration.toHours(), duration.toMinutes() % 60, duration.getSeconds() % 60);
// prints "0 Hours 18 Minutes 19 Seconds"

对于那些寻找Kotlin代码的人:

fun converter(millis: Long): String =
String.format(
"%02d : %02d : %02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(
TimeUnit.MILLISECONDS.toHours(millis)
),
TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(
TimeUnit.MILLISECONDS.toMinutes(millis)
)
)

示例输出:09 : 10 : 26

这个主题已经被很好地覆盖了,我只是想分享我的函数,也许你可以使用这些函数,而不是导入整个库。

    public long getSeconds(ms) {
return (ms/1000%60);
}
public long getMinutes(ms) {
return (ms/(1000*60)%60);
}
public long getHours(ms) {
return ((ms/(1000*60*60))%24);
}