| | |
|---|
| | | * @return 相差天数
|
|---|
| | | * @throws ParseException calendar 对日期进行时间操作 getTimeInMillis() 获取日期的毫秒显示形式
|
|---|
| | | */
|
|---|
| | | public static int daysBetween(Date smdate, Date bdate) throws ParseException {
|
|---|
| | | public static int daysBetween(Date minDate, Date maxDate) throws ParseException {
|
|---|
| | | Calendar cal = Calendar.getInstance();
|
|---|
| | | cal.setTime(smdate);
|
|---|
| | | long time1 = cal.getTimeInMillis();
|
|---|
| | | cal.setTime(bdate);
|
|---|
| | | long time2 = cal.getTimeInMillis();
|
|---|
| | | long between_days = (time2 - time1) / (1000 * 3600 * 24);
|
|---|
| | | cal.setTime(minDate);
|
|---|
| | | long minTime = cal.getTimeInMillis();
|
|---|
| | | cal.setTime(maxDate);
|
|---|
| | | long maxTime = cal.getTimeInMillis();
|
|---|
| | | long between_days = (maxTime - minTime) / (1000 * 3600 * 24);
|
|---|
| | | return Integer.parseInt(String.valueOf(between_days));
|
|---|
| | | }
|
|---|
| | |
|
|---|
| | | |
|---|
| | | /**
|
|---|
| | | * 字符串日期格式的计算
|
|---|
| | | * |
|---|
| | | * @param smdate
|
|---|
| | | * @param bdate
|
|---|
| | | * @return 单位天数
|
|---|
| | | * @throws ParseException
|
|---|
| | | */
|
|---|
| | | public static int daysBetween2(Date minDate, Date maxDate) throws ParseException {
|
|---|
| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
|---|
| | | return daysBetween(sdf.format(minDate), sdf.format(maxDate));
|
|---|
| | | }
|
|---|
| | |
|
|---|
| | | |
|---|
| | | /**
|
|---|
| | | * 字符串日期格式的计算
|
|---|
| | | *
|
|---|
| | |
|---|
| | | * @return
|
|---|
| | | * @throws ParseException
|
|---|
| | | */
|
|---|
| | | public static int daysBetween(String smdate, String bdate) throws ParseException {
|
|---|
| | | public static int daysBetween(String minDate, String maxDate) throws ParseException {
|
|---|
| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
|---|
| | | Calendar cal = Calendar.getInstance();
|
|---|
| | | cal.setTime(sdf.parse(smdate));
|
|---|
| | | long time1 = cal.getTimeInMillis();
|
|---|
| | | cal.setTime(sdf.parse(bdate));
|
|---|
| | | long time2 = cal.getTimeInMillis();
|
|---|
| | | long between_days = (time2 - time1) / (1000 * 3600 * 24);
|
|---|
| | | cal.setTime(sdf.parse(minDate));
|
|---|
| | | long minTime = cal.getTimeInMillis();
|
|---|
| | | cal.setTime(sdf.parse(maxDate));
|
|---|
| | | long maxTime = cal.getTimeInMillis();
|
|---|
| | | long between_days = (maxTime - minTime) / (1000 * 3600 * 24);
|
|---|
| | | return Integer.parseInt(String.valueOf(between_days));
|
|---|
| | | }
|
|---|
| | |
|
|---|
| | |
|---|
| | | /**
|
|---|
| | | * 随机减去几分钟
|
|---|
| | | * @param date
|
|---|
| | | * @param min 随机添加的分钟数
|
|---|
| | | * @return
|
|---|
| | | */
|
|---|
| | | public static Date reduceRandomMinute(Date date) {
|
|---|
| | | long rand = (long) (Math.random() * 60 * 8);
|
|---|
| | | public static Date reduceRandomMinute(Date date , int min) {
|
|---|
| | | long rand = (long) (Math.random() * 1000 * 60 * min);
|
|---|
| | | long time = date.getTime() - rand;
|
|---|
| | | return new Date(time);
|
|---|
| | | }
|
|---|
