[英]Convert GMT pattern date time
how can I parse this DateTime format?如何解析这种 DateTime 格式?
Wed Feb 03 2021 08:40:44 GMT+08:00 2021 年 2 月 3 日星期三 08:40:44 GMT+08:00
to至
Wed 03 Feb 2021 08:40:44 am 2021 年 2 月 3 日星期三 08:40:44 am
I recommend you do it using the the modern date-time API * .我建议您使用现代日期时间 API *来执行此操作。 The legacy date-time API (
java.util
date-time types and their formatting API, SimpleDateFormat
) are outdated and error-prone.旧的日期时间 API (
java.util
日期时间类型及其格式 API, SimpleDateFormat
) 已过时且容易出错。 It is recommended to stop using them completely and switch to java.time
, the modern date-time API.建议完全停止使用它们并切换到
java.time
,现代日期时间 API。
Solution using modern date-time API:使用现代日期时间 API 的解决方案:
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;
public class Main {
public static void main(String args[]) {
String dateStr = "Wed Feb 03 2021 08:40:44 GMT+08:00";
DateTimeFormatter dtfInput = DateTimeFormatter.ofPattern("EEE MMM d u H:m:s O", Locale.ENGLISH);
ZonedDateTime zdt = ZonedDateTime.parse(dateStr, dtfInput);
DateTimeFormatter dtfOutput = DateTimeFormatter.ofPattern("EEE dd MMM uuuu hh:mm:ss a", Locale.UK);
String formatted = dtfOutput.format(zdt);
System.out.println(formatted);
}
}
Output: Output:
Wed 03 Feb 2021 08:40:44 am
In case you need an object of java.util.Date
from this object of ZonedDateTime
, you can so as follows:如果您需要 object 的
java.util.Date
来自 object 的ZonedDateTime
,您可以执行以下操作:
Date date = Date.from(zdt.toInstant());
Learn more about the the modern date-time API * from Trail: Date Time .从Trail: Date Time了解有关现代日期时间 API *的更多信息。
Solution using the legacy API:使用旧版 API 的解决方案:
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String args[]) throws ParseException {
String dateStr = "Wed Feb 03 2021 08:40:44 GMT+08:00";
SimpleDateFormat sdfInput = new SimpleDateFormat("EEE MMM d y H:m:s z", Locale.ENGLISH);
Date date = sdfInput.parse(dateStr);
SimpleDateFormat sdfOutput = new SimpleDateFormat("EEE dd MMM yyyy hh:mm:ss a", Locale.UK);
String formatted = sdfOutput.format(date);
System.out.println(formatted);
}
}
Output: Output:
Wed 03 Feb 2021 12:40:44 am
* For any reason, if you have to stick to Java 6 or Java 7, you can use ThreeTen-Backport which backports most of the java.time functionality to Java 6 & 7. If you are working for an Android project and your Android API level is still not compliant with Java-8, check Java 8+ APIs available through desugaring and How to use ThreeTenABP in Android Project . * For any reason, if you have to stick to Java 6 or Java 7, you can use ThreeTen-Backport which backports most of the java.time functionality to Java 6 & 7. If you are working for an Android project and your Android API级别仍然不符合 Java-8,请检查Java 8+ API 可通过脱糖和如何在 Android 项目中使用 ThreeTenABP 。
Have you taken a look at the SimpleDateFormat class ( https://developer.android.com/reference/java/text/SimpleDateFormat )?您是否看过 SimpleDateFormat class ( https://developer.android.com/reference/java/text/SimpleDateFormat )? It should be able to display the date any way you like.它应该能够以您喜欢的任何方式显示日期。
Edit: Please see Arvind Kumar Avinash's answer instead.编辑:请参阅 Arvind Kumar Avinash 的回答。
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