如何在 Java 中以毫秒为单位获取 ISO 格式？
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How to get ISO format from time in milliseconds in Java?
提问by alicjasalamon
Is it simple way to get yyyy-MM-dd HH:mm:ss,SSSfrom time in millisecond? I've found some information how to do this from new Date()or Calendar.getInstance(), but couldn't find if it can be done from long (e.g. 1344855183166)
yyyy-MM-dd HH:mm:ss,SSS以毫秒为单位获取时间的简单方法是什么？我从new Date()or找到了一些如何做到这一点的信息Calendar.getInstance()，但找不到它是否可以从 long 开始（例如1344855183166）
回答by theINtoy
I thought you had asked how to get the time in this format "yyyy-MM-dd HH:mm:ss,SSS"
我以为你问过如何以这种格式获取时间“yyyy-MM-dd HH:mm:ss,SSS”
One way is to use java's SimpleDateFormat: http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html
一种方法是使用 java 的 SimpleDateFormat：http: //docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html
NOTE that this is not thread-safe.
请注意，这不是线程安全的。
...
...
Date d = new Date(1344855183166L);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS");
String dateStr = sdf.format(d);
...
...
回答by Jigar Joshi
回答by Y__
The Dateconstructor does take a long (milliseconds) doesn't it?
该Date构造函数需要很长的时间（毫秒），不是吗？
Regards,
问候，
回答by Basil Bourque
The question does not mention time zone, so I'll assume you meant UTC/GMT. The question does not explain "ISO format", so I'll assume you meant ISO 8601. This happens to be the default for third-party Joda-Time2.3 library. This isthread-safe.
这个问题没有提到时区，所以我假设你的意思是UTC/GMT。这个问题没有解释“ISO格式”，所以我假设你的意思是ISO 8601。这恰好是第三方Joda-Time2.3 库的默认设置。这是线程安全的。
// ? 2013 Basil Bourque. This source code may be used freely forever by anyone taking full responsibility for doing so.
System.out.println( "That moment: " + new org.joda.time.DateTime( 1344855183166L, org.joda.time.DateTimeZone.UTC ) );
When run…
运行时…
That moment: 2012-08-13T10:53:03.166Z
If the original poster meant a Poland time zone…
如果原始海报的意思是波兰时区......
// ? 2013 Basil Bourque. This source code may be used freely forever by anyone taking full responsibility for doing so.
// Time Zone list… http://joda-time.sourceforge.net/timezones.html
org.joda.time.DateTimeZone warsawTimeZone = org.joda.time.DateTimeZone.forID( "Europe/Warsaw" );
System.out.println( "That moment in Poland: " + new org.joda.time.DateTime( 1344855183166L, warsawTimeZone ) );
When run…
运行时…
That moment in Poland: 2012-08-13T12:53:03.166+02:00
回答by Sridhar Sg
If you have epoch millis. The below line should work,
如果你有纪元毫秒。下面的行应该工作，
Instant.ofEpochMilli(millis).toString()
