博客

Date date = new Date();
//使用plusDays加传入的时间加1天，将时分秒设置成0
LocalDateTime midnight = LocalDateTime.ofInstant(date.toInstant(),
        ZoneId.systemDefault()).plusDays(1).withHour(0).withMinute(0)
        .withSecond(0).withNano(0);
LocalDateTime currentDateTime = LocalDateTime.ofInstant(date.toInstant(),
        ZoneId.systemDefault());
//使用ChronoUnit.SECONDS.between方法，传入两个LocalDateTime对象即可得到相差的秒数
long seconds = ChronoUnit.SECONDS.between(currentDateTime, midnight);
System.out.println(seconds);