摘要：
LcoalDateTimeLocalDateTimenow=LocalDateTime.now();LocalDateTimeend=LocalDateTime.now();Durationduration=Duration.between(now,end);//相差的天数longdays=duration.toDays();//相差的小时数longhours=duration.toHours()
LcoalDateTime
LocalDateTime now = LocalDateTime.now();
LocalDateTime end = LocalDateTime.now();
Duration duration = Duration.between(now,end);
//相差的天数
long days = duration.toDays();
//相差的小时数
long hours = duration.toHours();
//相差的分钟数
long minutes = duration.toMinutes();
//相差毫秒数
long millis = duration.toMillis();
//相差的纳秒数
long nanos = duration.toNanos();
LocalDate
LocalDate start = LocalDate.of(2020, 12, 27);
Period period = Period.between(start, LocalDate.now());
// 日期相差
int days = period.getDays();
// 相差月份
int months = period.getMonths();
// 相差年份
int years = period.getYears();
System.out.println(days +"-"+ months +"-"+ years);
// 更准确 - 开发用这个，省事
long dayse = LocalDate.now().toEpochDay() - start.toEpochDay();
System.out.println("相差天数" + dayse);