【MongoDB】mongo时间问题

String date = "2017-05-26T02:11:11Z";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
sdf.setCalendar(new GregorianCalendar(new SimpleTimeZone(0, "GMT")));
Date date2 = sdf.parse(date);

public static Date mongoDateTran(Date date) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateStr = format.format(date);
format.setCalendar(new GregorianCalendar(new SimpleTimeZone(0, "GMT")));
try {
return format.parse(dateStr);
} catch (ParseException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
return date;
}
}