【1】计算两个日期之间差
① 获取两个日期之间小时
LocalDateTime endTime = meet.getEndTime();
LocalDateTime beginTime = meet.getBeginTime();
Duration duration = Duration.between(beginTime, endTime); // 计算两个日期时间之间的持续时间
long hoursDifference = duration.toHours(); // 获取小时数差值
① 获取两个日期之间分钟
LocalDateTime endTime = meet.getEndTime();
LocalDateTime beginTime = meet.getBeginTime();
Duration duration = Duration.between(beginTime, endTime); // 计算两个日期时间之间的持续时间
long toMinutes= duration.toMinutes();