- 求两个时间相差月份
SimpleDateFormat yyyyMM = new SimpleDateFormat("yyyyMM");
Calendar cal1 = Calendar.getInstance();
cal1.setTime(yyyyMM.parse(startTime));
Calendar cal2 = Calendar.getInstance();
cal2.setTime(yyyyMM.parse(endTime));
return (cal2.get(Calendar.YEAR) - cal1
.get(Calendar.YEAR))* 12+ cal2.get(Calendar.MONTH)
- cal1.get(Calendar.MONTH);