10

我正在将时间从 CST 转换为当地时间，但getTimeZone似乎无法正常工作。

    String cstTime = "2013-06-21 14:00:00";

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat(
            "yyyy-MM-dd HH:mm:ss");
    simpleDateFormat.setTimeZone(TimeZone.getTimeZone("CST"));

    Date date = null;
    try {
        date = simpleDateFormat.parse(cstTime);
    } catch (ParseException e) {
        System.out.println("Parse time error");
        e.printStackTrace();
    }

    TimeZone destTz = TimeZone.getDefault();//here I should get EDT on my phone
    simpleDateFormat.setTimeZone(destTz);
    String convertedLocalTime = simpleDateFormat.format(date);

    //the converted time I get is  "2013-06-21 10:00:00" 
    //but it should be             "2013-06-21 15:00:00"

它似乎使用的是 GMT 而不是 CST，下面是我在调试时得到的：

String abc = TimeZone.getTimeZone("CST").toString();
System.out.println("CST:"+abc);
Output:
I/System.out(19404): CST:java.util.SimpleTimeZone[id=GMT,offset=0,dstSavings=3600000,
useDaylight=fals‌​e,startYear=0,startMode=0,startMonth=0,startDay=0,startDayOfWeek=0,
startTime=0,en‌​dMode=0,endMonth=0,endDay=0,endDayOfWeek=0,endTime=0]

它使用格林威治标准时间吗？为什么..提前谢谢！

编辑：

终于通过使用让它工作了

simpleDateFormat.setTimeZone(TimeZone.getTimeZone( "GMT-5")); //GMT-5 is for CDT, I found my server is actually using CDT not CST

仍然不知道为什么使用字符串“CST”不起作用......

4

6 回答 6

10

来自 getTimeZone 的 javadoc：

Returns a TimeZone corresponding to the given id, or GMT for unknown ids. 

An ID can be an Olson name of the form Area/Location, such as America/Los_Angeles. 
The getAvailableIDs() method returns the supported names.

尝试使用 getAvailableIDs？

于 2013-06-21T19:40:25.730 回答
4

您可以使用“CST6CDT”时区，当中央夏令时间 (CDT) 切换回 CST 时，它会自动为您提供正确的时间，反之亦然。

于 2015-09-09T06:28:58.700 回答
2

以下代码帮助了我。

TimeZone tzone = TimeZone.getTimeZone("Singapore");
// set time zone to default
tzone.setDefault(tzone);
于 2015-05-06T09:42:53.613 回答
1

for any date time conversion i would suggest using JODA date time, its help me solve a bunch of date time issues.

you can initialize a date with a time zone, and convert between them very easily

DateTimeZone zone = DateTimeZone.forID("Europe/London");

or

DateTimeZone zoneUTC = DateTimeZone.UTC;

from JODA DATE TIME API

DateTime(DateTimeZone zone)
Constructs an instance set to the current system millisecond time using ISOChronology in the specified time zone.
于 2013-06-21T19:53:28.767 回答
1

由于面临类似问题，以下内容似乎对我有用：

Calendar c = Calendar.getInstance(TimeZone.getTimeZone("America/Chicago"));
于 2014-09-21T19:36:32.757 回答
0

One thing I found is that Java's TimeZone doesn't recognize "+09:00", but it does recognize "GMT+09:00" and "GMT+0900".

于 2015-12-16T17:53:35.457 回答