timestamp 格式 加减 天月等;
def subStractOneYear(time:TimeStamp): TimeStamp = {
val calendar = Calendar.getInstance()
calendar.setTimeInMillis(time.getTime)
calendar.add(Calendar.YEAR,-1)
new TimeStamp(calendar.getTimeInMillis)
}
判断时间日期是否在一个范围内：
caseclassDateRange(startDate:Timestamp, endDate:Timestamp) {
defin(targetDate:Date):Boolean={
targetDate.before(endDate)
&& targetDate.after(startDate)
}
}
