| | |
| | | return weekDays[w]; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * 获取当前日期是星期几<br> |
| | | * Obtain the day of the week for the current date. |
| | | * @param dt |
| | | * @return 当前日期是星期几 |
| | | */ |
| | | public static int getWeekNumOfDate(Date dt) { |
| | | Integer[] weekDays = {7, 1, 2, 3, 4, 5, 6}; // 将周一的数值设为2,依次递增表示周二到周日 |
| | | Calendar cal = Calendar.getInstance(); |
| | | cal.setTime(dt); |
| | | int w = cal.get(Calendar.DAY_OF_WEEK) - 1; |
| | | if (w < 0) { |
| | | w = 6; // 如果为负数,将其设为6,表示周日 |
| | | } |
| | | return weekDays[w]; |
| | | } |
| | | |
| | | /** |
| | | * 获取今天时间 2017-11-20 00:00:00 |
| | | */ |
| | |
| | | return Date.from(endOfDay.atZone(ZoneId.systemDefault()).toInstant()); |
| | | } |
| | | |
| | | /** |
| | | * 获取有效期数的结束时间 |
| | | * @param startTime 开始时间 |
| | | * @param validPeriod 有效期数 |
| | | * @return 结束时间 |
| | | */ |
| | | public static Date getExpirationDate(Date startTime, int validPeriod){ |
| | | Calendar calendar = Calendar.getInstance(); |
| | | calendar.setTime(startTime); |
| | | calendar.add(Calendar.DAY_OF_MONTH, validPeriod); |
| | | return calendar.getTime(); |
| | | } |
| | | |
| | | |
| | | } |