如何在Java中将UTC时间戳转换为本地日期，小时，分钟？ [英] How to convert a UTC timestamp to local day, hour, minute in Java?

问题描述

然后给出时间戳1245613885，这是GMT中的时间戳

Given then timestamp 1245613885 that is a timestamp in GMT

如何使用服务器的本地时区信息将其转换为Java中的Year，Day，hour，Minute值？

How do I turn that into Year, Day, Hour, Minute values in Java using the server's local timezone info?

推荐答案

您可以使用 java.util.Calendar 。它提供了 setTimeZone（） 方法（这是多余的，因为默认情况下它已经选择了系统默认时区）。

You can use java.util.Calendar for this. It offers a setTimeZone() method (which is by the way superfluous since it by default already picks the system default timezone).

long timestamp = 1245613885;
Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(TimeZone.getDefault());
calendar.setTimeInMillis(timestamp * 1000);

int year = calendar.get(Calendar.YEAR);
int day = calendar.get(Calendar.DATE);
int hour = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);

如果您想将其显示在易于理解的日期字符串中，那么我建议< a href = http://download.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html rel = noreferrer> SimpleDateFormat 。

If you'd like to present it in a human readable date string, then I'd suggest SimpleDateFormat for this.

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateString = sdf.format(calendar.getTime());
System.out.println(dateString); // 2009-06-21 15:51:25

（输出正确为每个我的时区GMT-4）

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