私は、呼び出しが行われた日時も検証する Java のセキュリティ署名に取り組んでいます。POST呼び出しは次のようなもので到着します
String date = "Sat, 27 Apr 2013 01:11:30 GMT"
SimpleDateFormat RFC1123Format = new SimpleDateFormat("EEE, dd MMM yyyyy HH:mm:ss z", Locale.US);
そして、私はそれを解析することができます
Calendar gmtTime = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
Date dateHeader = RFC1123Format.parse(date);
gmtTime.setTime(dateHeader);
System.out.println("Date Header (GMT TIME): " + gmtTime.getTimeInMillis() + " ms");
System.out.println("Hour of day (GMT TIME): " + gmtTime.get(Calendar.HOUR_OF_DAY));
Calendar currentTime = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
currentTime.setTimeInMillis(System.currentTimeMillis());
System.out.println("System Date (LA TIME): " + currentTime.getTimeInMillis() + " ms");
System.out.println("Hour of day (LA TIME): " + currentTime.get(Calendar.HOUR_OF_DAY));
currentTime.setTimeZone(TimeZone.getTimeZone("GMT"));
System.out.println("System Date (GMT TIME): " + currentTime.getTimeInMillis() + " ms");
System.out.println("Hour of day (GMT TIME): " + currentTime.get(Calendar.HOUR_OF_DAY));
System.out.println("Diff: " + Math.abs(gmtTime.getTimeInMillis() - currentTime.getTimeInMillis()));
ただし、取得するプリントアウトは 1 時間異なります。
Date Header (GMT TIME): 1367025090000 ms
Hour of day (GMT TIME): 1
System Date (LA TIME): 1367022298441 ms
Hour of day (LA TIME): 0
System Date (GMT TIME): 1367022298441 ms
Hour of day (GMT TIME): 0
Diff: 2791559
何か案は?