我真的对Calendar.getInstance(TimeZone.getTimeZone("UTC"))
方法调用得到的结果感到困惑,它返回的是IST时间。
下面是我使用的代码
Calendar cal_Two = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
System.out.println(cal_Two.getTime());
我得到的回应是:
Sat Jan 25 15:44:18 IST 2014
因此,我尝试将默认TimeZone更改为UTC,然后进行了检查,结果运行正常
Calendar cal_Two = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
System.out.println(cal_Two.getTime());
TimeZone tz = TimeZone.getDefault() ;
TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
Calendar cal_Three = Calendar.getInstance();
System.out.println(cal_Three.getTime());
TimeZone.setDefault(tz);
结果:
Sat Jan 25 16:09:11 IST 2014
Sat Jan 25 10:39:11 UTC 2014
我是不是漏掉了什么?
发布于 2014-01-25 18:50:00
System.out.println(cal_Two.getTime())
调用从getTime()
返回一个Date
。正在将Date
转换为println
的字符串,在本例中,该转换将使用默认的IST
时区。
您需要显式地使用DateFormat.setTimeZone()
在所需的时区中打印Date
。
编辑:@Laurynas的礼仪,考虑一下:
TimeZone timeZone = TimeZone.getTimeZone("UTC");
Calendar calendar = Calendar.getInstance(timeZone);
SimpleDateFormat simpleDateFormat =
new SimpleDateFormat("EE MMM dd HH:mm:ss zzz yyyy", Locale.US);
simpleDateFormat.setTimeZone(timeZone);
System.out.println("Time zone: " + timeZone.getID());
System.out.println("default time zone: " + TimeZone.getDefault().getID());
System.out.println();
System.out.println("UTC: " + simpleDateFormat.format(calendar.getTime()));
System.out.println("Default: " + calendar.getTime());
发布于 2016-02-11 01:25:11
Calendar currentTime = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
currentTime.set(Calendar.ZONE_OFFSET, TimeZone.getTimeZone("UTC").getRawOffset());
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, currentTime.get(Calendar.HOUR_OF_DAY));
calendar.getTimeInMillis()
是为我工作的
发布于 2020-10-10 18:23:59
这对我来说很有效。
获取时间戳类型:
public static Timestamp getCurrentTimestamp() {
TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
final Calendar cal = Calendar.getInstance();
Date date = cal.getTime();
Timestamp ts = new Timestamp(date.getTime());
return ts;
}
获取字符串类型:
public static String getCurrentTimestamp() {
TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
final Calendar cal = Calendar.getInstance();
Date date = cal.getTime();
Timestamp ts = new Timestamp(date.getTime());
return ts.toString();
}
https://stackoverflow.com/questions/21349475
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