如何使用 Java 从 UUID 中提取日期?[已关闭]
如何将日期格式转换为日期?UUID
2011-04-22
例如,我有这样的UUID
118ffe80-466b-11e1-b5a5-5732cf729524.
如何将其转换为日期格式?
我试过了
String uuid="118ffe80-466b-11e1-b5a5-5732cf729524";
UUID uid = UUID.fromString(uuid);
long ls=convertTime(uid.timeStamp()); // it returns long value
public String convertTime(long time){
System.out.println("====="+time);
Date date = new Date(time);
Format format = new SimpleDateFormat("yyyy/MM/dd");
return format.format(date).toString();
}
输出我得到:4294744/11/02
相同的情况对于perl来说工作正常
$uuid='ef802820-46b3-11e2-bf3a-47ef6b3e28e2';
$uuid =~ s/-//g;
my $timelow = hex substr( $uuid, 2 * 0, 2 * 4 );
my $timemid = hex substr( $uuid, 2 * 4, 2 * 2 );
my $version = hex substr( $uuid, 2 * 6, 1 );
my $timehi = hex substr( $uuid, 2 * 6 + 1, 2 * 2 - 1 );
my $time = ( $timehi * ( 2**16 ) + $timemid ) * ( 2**32 ) + $timelow;
my $epoc = int( $time / 10000000 ) - 12219292800;
my $nano = $time - int( $time / 10000000 ) * 10000000;
#$time_date = scalar localtime $epoc;
#print strftime( '%d-%m-%Y %H:%M:%S', localtime($epoc) );
#print "\n Time: ", scalar localtime $epoc, " +", $nano / 10000, "ms\n";