java convert milliseconds to time format

问题:

I am trying to convert a long value (The number of milliseconds elapsed from 1/1/1970) to a time of format h:m:s:ms
The long value I use as timestamp, I get from the field timestamp of logging event from log4j.
How do I do the conversion?
For example to get the minutes I tried the following and all fail:
logEvent.timeStamp/ (1000*60*60) and
TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)
but I get garbage:
I get

1289375173771 for logEvent.timeStamp
358159  for logEvent.timeStamp/ (1000*60*60) 
21489586 for TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)

How can I convert this?

Thanks

回答1:

Try this:

Date date = new Date(logEvent.timeSTamp);
DateFormat formatter = new SimpleDateFormat(\"HH:mm:ss.SSS\");
formatter.setTimeZone(TimeZone.getTimeZone(\"UTC\"));
String dateFormatted = formatter.format(date);

See SimpleDateFormat for a description of other format strings that the class accepts.

See runnable example using input of 1200 ms.

回答2:

long millis = durationInMillis % 1000;
long second = (durationInMillis / 1000) % 60;
long minute = (durationInMillis / (1000 * 60)) % 60;
long hour = (durationInMillis / (1000 * 60 * 60)) % 24;

String time = String.format(\"%02d:%02d:%02d.%d\", hour, minute, second, millis);

回答3:

I\'ll show you three ways to (a) get the minute field from a long value, and (b) print it using the Date format you want. One uses java.util.Calendar, another uses Joda-Time, and the last uses the java.time framework built into Java 8 and later.

The java.time framework supplants the old bundled date-time classes, and is inspired by Joda-Time, defined by JSR 310, and extended by the ThreeTen-Extra project.

The java.time framework is the way to go when using Java 8 and later. Otherwise, such as Android, use Joda-Time. The java.util.Date/.Calendar classes are notoriously troublesome and should be avoided.

java.util.Date & .Calendar

final long timestamp = new Date().getTime();

// with java.util.Date/Calendar api
final Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(timestamp);
// here\'s how to get the minutes
final int minutes = cal.get(Calendar.MINUTE);
// and here\'s how to get the String representation
final String timeString =
    new SimpleDateFormat(\"HH:mm:ss:SSS\").format(cal.getTime());
System.out.println(minutes);
System.out.println(timeString);

Joda-Time

// with JodaTime 2.4
final DateTime dt = new DateTime(timestamp);
// here\'s how to get the minutes
final int minutes2 = dt.getMinuteOfHour();
// and here\'s how to get the String representation
final String timeString2 = dt.toString(\"HH:mm:ss:SSS\");
System.out.println(minutes2);
System.out.println(timeString2);

Output:

24
09:24:10:254
24
09:24:10:254

java.time

long millisecondsSinceEpoch = 1289375173771L;
Instant instant = Instant.ofEpochMilli ( millisecondsSinceEpoch );
ZonedDateTime zdt = ZonedDateTime.ofInstant ( instant , ZoneOffset.UTC );

DateTimeFormatter formatter = DateTimeFormatter.ofPattern ( \"HH:mm:ss:SSS\" );
String output = formatter.format ( zdt );

System.out.println ( \"millisecondsSinceEpoch: \" + millisecondsSinceEpoch + \" instant: \" + instant + \" output: \" + output );

millisecondsSinceEpoch: 1289375173771 instant: 2010-11-10T07:46:13.771Z output: 07:46:13:771

回答4:

It is possible to use apache commons (commons-lang3) and its DurationFormatUtils class.

<dependency>
  <groupId>org.apache.commons</groupId>
  <artifactId>commons-lang3</artifactId>
  <version>3.1</version>
</dependency>

For example:

String formattedDuration = DurationFormatUtils.formatDurationHMS(12313152);
// formattedDuration value is \"3:25:13.152\"
String otherFormattedDuration = DurationFormatUtils.formatDuration(12313152, DurationFormatUtils.ISO_EXTENDED_FORMAT_PATTERN);
// otherFormattedDuration value is \"P0000Y0M0DT3H25M13.152S\"

Hope it can help ...

回答5:

long second = TimeUnit.MILLISECONDS.toSeconds(millis);
long minute = TimeUnit.MILLISECONDS.toMinutes(millis);
long hour = TimeUnit.MILLISECONDS.toHours(millis);
millis -= TimeUnit.SECONDS.toMillis(second);
return String.format(\"%02d:%02d:%02d:%d\", hour, minute, second, millis);

回答6:

public static String timeDifference(long timeDifference1) {
long timeDifference = timeDifference1/1000;
int h = (int) (timeDifference / (3600));
int m = (int) ((timeDifference - (h * 3600)) / 60);
int s = (int) (timeDifference - (h * 3600) - m * 60);

return String.format(\"%02d:%02d:%02d\", h,m,s);

回答7:

Try this:

    String sMillis = \"10997195233\";
    double dMillis = 0;

    int days = 0;
    int hours = 0;
    int minutes = 0;
    int seconds = 0;
    int millis = 0;

    String sTime;

    try {
        dMillis = Double.parseDouble(sMillis);
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }


    seconds = (int)(dMillis / 1000) % 60;
    millis = (int)(dMillis % 1000);

    if (seconds > 0) {
        minutes = (int)(dMillis / 1000 / 60) % 60;
        if (minutes > 0) {
            hours = (int)(dMillis / 1000 / 60 / 60) % 24;
            if (hours > 0) {
                days = (int)(dMillis / 1000 / 60 / 60 / 24);
                if (days > 0) {
                    sTime = days + \" days \" + hours + \" hours \" + minutes + \" min \" + seconds + \" sec \" + millis + \" millisec\";
                } else {
                    sTime = hours + \" hours \" + minutes + \" min \" + seconds + \" sec \" + millis + \" millisec\";
                }
            } else {
                sTime = minutes + \" min \" + seconds + \" sec \" + millis + \" millisec\";
            }
        } else {
            sTime = seconds + \" sec \" + millis + \" millisec\";
        }
    } else {
        sTime = dMillis + \" millisec\";
    }

    System.out.println(\"time: \" + sTime);

回答8:

Doing

logEvent.timeStamp / (1000*60*60)

will give you hours, not minutes. Try:

logEvent.timeStamp / (1000*60)

and you will end up with the same answer as

TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)

回答9:

    long hours = TimeUnit.MILLISECONDS.toHours(timeInMilliseconds);
    long minutes = TimeUnit.MILLISECONDS.toMinutes(timeInMilliseconds - TimeUnit.HOURS.toMillis(hours));
    long seconds = TimeUnit.MILLISECONDS
            .toSeconds(timeInMilliseconds - TimeUnit.HOURS.toMillis(hours) - TimeUnit.MINUTES.toMillis(minutes));
    long milliseconds = timeInMilliseconds - TimeUnit.HOURS.toMillis(hours)
            - TimeUnit.MINUTES.toMillis(minutes) - TimeUnit.SECONDS.toMillis(seconds);
    return String.format(\"%02d:%02d:%02d:%d\", hours, minutes, seconds, milliseconds);