您可以使用来减少毫秒数
Calendar：
java.util.Date utilDate = new java.util.Date();Calendar cal = Calendar.getInstance();cal.setTime(utilDate);cal.set(Calendar.MILLISECOND, 0);System.out.println(new java.sql.Timestamp(utilDate.getTime()));System.out.println(new java.sql.Timestamp(cal.getTimeInMillis()));
输出：
2014-04-04 10:10:17.782014-04-04 10:10:17.0
