blocks|key|1172127|text|JodaTime有一个Period类可以表示这样的量，并且可以(通过IsoPeriodFormat)以ISO8601格式呈现，例如PT4D1H3M5S，例如。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1172128|Period+period+=+new+Period(millis);
String+formatted+=+ISOPeriodFormat.standard().print(period);|code-block|syntax|javascript|1172129|如果这种格式不是您想要的格式，那么PeriodFormatterBuilder允许您组装任意布局，包括C#样式的4d1h3m5s。|1172130|entityMap|0|LINK|mutability|MUTABLE|url|http://joda-time.sourceforge.net/|1|http://joda-time.sourceforge.net/api-release/org/joda/time/Period.html|2|http://joda-time.sourceforge.net/api-release/org/joda/time/format/ISOPeriodFormat.html|3|http://en.wikipedia.org/wiki/ISO_8601|4|http://joda-time.sourceforge.net/api-release/org/joda/time/format/PeriodFormatterBuilder.html^0|B|6|Y|F|1T|A|0|8|0|B|6|1|Y|F|2|1F|7|3|0|0|H|M|1K|8|H|M|4|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]|$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@$9|19|A|1A|1|1B]|$9|1C|A|1D|1|1E]|$9|1F|A|1G|1|1H]|$9|1I|A|1J|1|1K]]|E|$]]|$1|F|3|G|5|H|7|1L|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1M|8|@$9|1N|A|1O|B|C]|$9|1P|A|1Q|B|C]]|D|@$9|1R|A|1S|1|1T]]|E|$]]|$1|M|3|-4|5|6|7|1U|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]|W|$5|P|Q|R|E|$S|X]]|Y|$5|P|Q|R|E|$S|Z]]|10|$5|P|Q|R|E|$S|11]]]]

<a href="http://joda-time.sourceforge.net/" rel="noreferrer">JodaTime</a> has a <a href="http://joda-time.sourceforge.net/api-release/org/joda/time/Period.html" rel="noreferrer"><code>Period</code></a> class that can represent such quantities, and can be rendered (via <a href="http://joda-time.sourceforge.net/api-release/org/joda/time/format/ISOPeriodFormat.html" rel="noreferrer"><code>IsoPeriodFormat</code></a>) in <a href="http://en.wikipedia.org/wiki/ISO_8601" rel="noreferrer">ISO8601</a> format, e.g. <code>PT4D1H3M5S</code>, e.g.

<pre><code>Period period = new Period(millis);
String formatted = ISOPeriodFormat.standard().print(period);
</code></pre>

If that format isn't the one you want, then <a href="http://joda-time.sourceforge.net/api-release/org/joda/time/format/PeriodFormatterBuilder.html" rel="noreferrer"><code>PeriodFormatterBuilder</code></a> lets you assemble arbitrary layouts, including your C#-style <code>4d1h3m5s</code>.

blocks|key|957729|text|使用PeriodFormatterBuilder，Joda+Time有一个很好的方法来实现这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|957730|速战速决：PeriodFormat.getDefault().print(duration.toPeriod());|style|CODE|957731|例如：|957732|//import+org.joda.time.format.PeriodFormatter;
//import+org.joda.time.format.PeriodFormatterBuilder;
//import+org.joda.time.Duration;

Duration+duration+=+new+Duration(123456);+//+in+milliseconds
PeriodFormatter+formatter+=+new+PeriodFormatterBuilder()
+++++.appendDays()
+++++.appendSuffix("d")
+++++.appendHours()
+++++.appendSuffix("h")
+++++.appendMinutes()
+++++.appendSuffix("m")
+++++.appendSeconds()
+++++.appendSuffix("s")
+++++.toFormatter();
String+formatted+=+formatter.print(duration.toPeriod());
System.out.println(formatted);|code-block|syntax|javascript|957733|entityMap|0|LINK|mutability|MUTABLE|url|http://joda-time.sourceforge.net/apidocs/org/joda/time/format/PeriodFormatterBuilder.html|1|http://joda-time.sourceforge.net/^0|2|M|0|P|9|1|0|5|1H|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]|$A|12|B|13|1|14]]|C|$]]|$1|D|3|E|5|6|7|15|8|@$A|16|B|17|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@]|C|$]]|$1|J|3|K|5|L|7|19|8|@]|9|@]|C|$M|N]]|$1|O|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]|W|$5|R|S|T|C|$U|X]]]]

<a href="http://joda-time.sourceforge.net/" rel="noreferrer">Joda Time</a> has a pretty good way to do this using a <a href="http://joda-time.sourceforge.net/apidocs/org/joda/time/format/PeriodFormatterBuilder.html" rel="noreferrer">PeriodFormatterBuilder</a>.

Quick Win: <code>PeriodFormat.getDefault().print(duration.toPeriod());</code>

e.g.

<pre><code>//import org.joda.time.format.PeriodFormatter;
//import org.joda.time.format.PeriodFormatterBuilder;
//import org.joda.time.Duration;

Duration duration = new Duration(123456); // in milliseconds
PeriodFormatter formatter = new PeriodFormatterBuilder()
 .appendDays()
 .appendSuffix("d")
 .appendHours()
 .appendSuffix("h")
 .appendMinutes()
 .appendSuffix("m")
 .appendSeconds()
 .appendSuffix("s")
 .toFormatter();
String formatted = formatter.print(duration.toPeriod());
System.out.println(formatted);
</code></pre>

blocks|key|957759|text|Apache+commons-lang提供了一个有用的类来实现这一点，DurationFormatUtils|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|957760|例如DurationFormatUtils.formatDurationHMS(+15362+*+1000+)+)+=>+4:16:02.000+(H:m:s.millis)+DurationFormatUtils.formatDurationISO(+15362+*+1000+)+)+=>+P0Y0M0DT4H16M2.000S，参见。ISO8601|style|CODE|957761|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DurationFormatUtils.html^0|Z|J|0|0|2|1J|2G|1J|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@$A|U|B|V|F|G]|$A|W|B|X|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

Apache commons-lang provides a useful class to get this done as well <a href="http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DurationFormatUtils.html">DurationFormatUtils</a>

e.g. 
<code>DurationFormatUtils.formatDurationHMS( 15362 * 1000 ) )</code> => 4:16:02.000 (H:m:s.millis)
<code>DurationFormatUtils.formatDurationISO( 15362 * 1000 ) )</code> => P0Y0M0DT4H16M2.000S, cf. ISO8601

blocks|key|957781|text|下面是如何使用纯JDK代码完成此操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|957782|import+javax.xml.datatype.DatatypeFactory;
import+javax.xml.datatype.Duration;

long+diffTime+=+215081000L;
Duration+duration+=+DatatypeFactory.newInstance().newDuration(diffTime);

System.out.printf("%2502d:%2502d:%2502d",+duration.getDays()+*+24+%2B+duration.getHours(),+duration.getMinutes(),+duration.getSeconds());+|code-block|syntax|javascript|957783|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here's how you can do it using pure JDK code:

<pre><code>import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.Duration;

long diffTime = 215081000L;
Duration duration = DatatypeFactory.newInstance().newDuration(diffTime);

System.out.printf("%02d:%02d:%02d", duration.getDays() * 24 + duration.getHours(), duration.getMinutes(), duration.getSeconds()); 
</code></pre>

blocks|key|1172238|text|我知道这可能并不完全适合您的用例，但是PrettyTime在这里可能很有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1172239|PrettyTime+p+=+new+PrettyTime();
System.out.println(p.format(new+Date()));
//prints:+“right+now”

System.out.println(p.format(new+Date(1000*60*10)));
//prints:+“10+minutes+from+now”|code-block|syntax|javascript|1172240|entityMap|0|LINK|mutability|MUTABLE|url|http://ocpsoft.org/prettytime/^0|J|A|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

I realize this might not fit your use case exactly, but <a href="http://ocpsoft.org/prettytime/" rel="nofollow noreferrer">PrettyTime</a> might be useful here.

<pre><code>PrettyTime p = new PrettyTime();
System.out.println(p.format(new Date()));
//prints: “right now”

System.out.println(p.format(new Date(1000*60*10)));
//prints: “10 minutes from now”
</code></pre>

blocks|key|957851|text|在Java8中，您还可以使用java.time.Duration的toString()方法来格式化它，而无需使用ISO+8601+seconds+based+representation的外部库，比如PT8H6M12.345S。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|957852|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/8/docs/api/java/time/Duration.html.|1|http://docs.oracle.com/javase/8/docs/api/java/time/Duration.html#toString--|2|https://en.wikipedia.org/wiki/ISO_8601#Durations^0|E|I|X|A|E|I|0|X|A|1|1K|11|2|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]|$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|F|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]|N|$5|I|J|K|E|$L|O]]|P|$5|I|J|K|E|$L|Q]]]]

With Java 8 you can also use the <a href="http://docs.oracle.com/javase/8/docs/api/java/time/Duration.html#toString--" rel="noreferrer"><code>toString()</code></a> method of <a href="http://docs.oracle.com/javase/8/docs/api/java/time/Duration.html." rel="noreferrer"><code>java.time.Duration</code></a> to format it without external libraries using <a href="https://en.wikipedia.org/wiki/ISO_8601#Durations" rel="noreferrer">ISO 8601 seconds based representation</a> such as PT8H6M12.345S.

blocks|key|957899|text|我构建了一个简单的解决方案，使用Java8的Duration.toString()和一些正则表达式：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|957900|public+static+String+humanReadableFormat(Duration+duration)+{
++++return+duration.toString()
++++++++++++.substring(2)
++++++++++++.replaceAll("(\\d[HMS])(?!$)",+"$1+")
++++++++++++.toLowerCase();
}|code-block|syntax|javascript|957901|结果将如下所示：|957902|-+5h
-+7h+15m
-+6h+50m+15s
-+2h+5s
-+0.1s|957903|如果不想要空格，只需删除replaceAll即可。|957904|entityMap^0|M|J|0|0|0|0|C|A|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

I've built a simple solution, using Java 8's <code>Duration.toString()</code> and a bit of regex:

<pre><code>public static String humanReadableFormat(Duration duration) {
 return duration.toString()
 .substring(2)
 .replaceAll("(\\d[HMS])(?!$)", "$1 ")
 .toLowerCase();
}
</code></pre>

The result will look like:

<pre><code>- 5h
- 7h 15m
- 6h 50m 15s
- 2h 5s
- 0.1s
</code></pre>

If you don't want spaces between, just remove <code>replaceAll</code>.

blocks|key|957925|text|Java+9%2B|type|unstyled|depth|inlineStyleRanges|entityRanges|data|957926|Duration+d1+=+Duration.ofDays(0);
++++++++d1+=+d1.plusHours(47);
++++++++d1+=+d1.plusMinutes(124);
++++++++d1+=+d1.plusSeconds(124);
System.out.println(String.format("%25s+d+%25sh+%25sm+%25ss",+
++++++++++++++++d1.toDaysPart(),+
++++++++++++++++d1.toHoursPart(),+
++++++++++++++++d1.toMinutesPart(),+
++++++++++++++++d1.toSecondsPart()));|code-block|syntax|javascript|957927|2d+1h+6m+4s|957928|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Java 9+

<pre><code>Duration d1 = Duration.ofDays(0);
 d1 = d1.plusHours(47);
 d1 = d1.plusMinutes(124);
 d1 = d1.plusSeconds(124);
System.out.println(String.format("%s d %sh %sm %ss", 
 d1.toDaysPart(), 
 d1.toHoursPart(), 
 d1.toMinutesPart(), 
 d1.toSecondsPart()));
</code></pre>

2 d 1h 6m 4s

blocks|key|1172385|text|另一个Java+9%2B解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1172386|private+String+formatDuration(Duration+duration)+{
++++List<String>+parts+=+new+ArrayList<>();
++++long+days+=+duration.toDaysPart();
++++if+(days+>+0)+{
++++++++parts.add(plural(days,+"day"));
++++}
++++int+hours+=+duration.toHoursPart();
++++if+(hours+>+0+%7C%7C+!parts.isEmpty())+{
++++++++parts.add(plural(hours,+"hour"));
++++}
++++int+minutes+=+duration.toMinutesPart();
++++if+(minutes+>+0+%7C%7C+!parts.isEmpty())+{
++++++++parts.add(plural(minutes,+"minute"));
++++}
++++int+seconds+=+duration.toSecondsPart();
++++parts.add(plural(seconds,+"second"));
++++return+String.join(",+",+parts);
}

private+String+plural(long+num,+String+unit)+{
++++return+num+%2B+"+"+%2B+unit+%2B+(num+==+1+?+""+:+"s");
}|code-block|syntax|javascript|1172387|例如，|1172388|6+days,+21+hours,+2+minutes,+14+seconds|1172389|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Another Java 9+ solution:
<pre><code>private String formatDuration(Duration duration) {
 List&lt;String&gt; parts = new ArrayList&lt;&gt;();
 long days = duration.toDaysPart();
 if (days &gt; 0) {
 parts.add(plural(days, &quot;day&quot;));
 }
 int hours = duration.toHoursPart();
 if (hours &gt; 0 || !parts.isEmpty()) {
 parts.add(plural(hours, &quot;hour&quot;));
 }
 int minutes = duration.toMinutesPart();
 if (minutes &gt; 0 || !parts.isEmpty()) {
 parts.add(plural(minutes, &quot;minute&quot;));
 }
 int seconds = duration.toSecondsPart();
 parts.add(plural(seconds, &quot;second&quot;));
 return String.join(&quot;, &quot;, parts);
}

private String plural(long num, String unit) {
 return num + &quot; &quot; + unit + (num == 1 ? &quot;&quot; : &quot;s&quot;);
}
</code></pre>
E.g.,
<pre><code>6 days, 21 hours, 2 minutes, 14 seconds
</code></pre>

Does anyone know of a Java library that can pretty print a number in milliseconds in the same way that C# does?

E.g., 123456 ms as a long would be printed as 4d1h3m5s.

How can I "pretty print" a Duration in Java?

Java

有没有人知道Java库可以像C#一样以毫秒为单位漂亮地打印数字？例如，123456毫秒的长度将打印为4d1h3m5s。

问如何在Java中“漂亮地打印”一个持续时间？
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