public class DateUtils {
private DateUtils() {
}
public static final String FORMAT_UTC = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";
public static long formatUTCToLong(String utc) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat(FORMAT_UTC);
Date parse = sdf.parse(utc);
Calendar calendar = Calendar.getInstance();
calendar.setTime(parse);
calendar.set(Calendar.HOUR, calendar.get(Calendar.HOUR) + 8);
return calendar.getTimeInMillis();
}
public static void main(String[] args) throws ParseException {
String FORMAT_UTC = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";
String utc ="2022-11-15T14:00:08.996Z";
SimpleDateFormat sdf = new SimpleDateFormat(FORMAT_UTC);
Date parse = sdf.parse(utc);
Calendar calendar = Calendar.getInstance();
calendar.setTime(parse);
calendar.set(Calendar.HOUR, calendar.get(Calendar.HOUR) + 8);
System.out.println(formatUTCToLong("2022-11-15T14:00:08.996Z"));
System.out.println(formatUTCToLong("2022-11-15T14:00:08.997Z"));
System.out.println(formatUTCToLong("2022-11-15T14:00:09.000Z"));
}
}
输出效果
1668520808996
1668520808997
1668520809000