public Date getdate(int i) // //获取前后日期 i为正数 向后推迟i天,负数时向前提前i天
{
Date dat = null;
Calendar cd = Calendar.getInstance();
cd.add(Calendar.DATE, i);
dat = cd.getTime();
SimpleDateFormat dformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Timestamp date = Timestamp.valueOf(dformat.format(dat));
return date;
}
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