将java日期转换为Sql时间戳

Question

我试图java.util.Date将其转换为java.sql.Timestamp后插入,我使用以下代码段:

java.util.Date utilDate = new java.util.Date();
java.sql.Timestamp sq = new java.sql.Timestamp(utilDate.getTime());

但是,这是给我sq的2014-04-04 13:30:17.533

有没有办法在没有毫秒的情况下获得输出？

Answer 1

您可以使用以下命令切断毫秒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 10:10:17.78
2014-04-04 10:10:17.0

Answer 2

看看SimpleDateFormat:

java.util.Date utilDate = new java.util.Date();
java.sql.Timestamp sq = new java.sql.Timestamp(utilDate.getTime());  

SimpleDateFormat sdf = new SimpleDateFormat("dd.MM.yyyy HH:mm:ss");
System.out.println(sdf.format(sq));

Answer 3

问题在于您打印时间数据的方式

java.util.Date utilDate = new java.util.Date();
java.sql.Timestamp sq = new java.sql.Timestamp(utilDate.getTime());
System.out.println(sa); //this will print the milliseconds as the toString() has been written in that format

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println(sdf.format(timestamp)); //this will print without ms

Answer 4

我建议使用 apache.commons 库中的 DateUtils。

long millis = DateUtils.truncate(utilDate, Calendar.MILLISECOND).getTime();
java.sql.Timestamp sq = new java.sql.Timestamp(millis );

编辑：固定Calendar.MILISECOND为Calendar.MILLISECOND