java 生成两个LocalDateTime之间的随机时间

1.获取两个时间
LocalDateTime startTime,
LocalDateTime endTime
2.将两个时间转为秒为单位的时间戳
long start = startTime.toEpochSecond(ZoneOffset.of("+8"));
long end = endTime.toEpochSecond(ZoneOffset.of("+8"));
3.计算两个时间戳的差值
long difference = (long)(Math.random() * (end - start));
4.生成随机时间
LocalDateTime.ofEpochSecond(start+difference,0, ZoneOffset.ofHours(8))
完整代码

public class DateRandomTools {

/**
 * 一个时间段内随机一个时间
 * @param startTime
 * @param endTime
 * @return
 */
public static LocalDateTime createRandomDate(LocalDateTime startTime, LocalDateTime endTime){
    //将两个时间转为时间戳
    long start = startTime.toEpochSecond(ZoneOffset.of("+8"));
    long end = endTime.toEpochSecond(ZoneOffset.of("+8"));
    //获取两个时间的随机数
    long difference = (long)(Math.random() * (end - start));
    //生成时间
    return LocalDateTime.ofEpochSecond(start+difference,0, ZoneOffset.ofHours(8));
}

/**
 * 一个时间段内随机一个时间
 * @param startTime
 * @param endTime
 * @param number
 * @return
 */
public static List<LocalDateTime> createRandomDate(LocalDateTime startTime, LocalDateTime endTime,Integer number){
    //将两个时间转为时间戳
    long start = startTime.toEpochSecond(ZoneOffset.of("+8"));
    long end = endTime.toEpochSecond(ZoneOffset.of("+8"));
    long difference;
    List<LocalDateTime> list = new ArrayList<>();
    for (int i = 0; i < number; i++) {
        //获取两个时间的随机数
        difference = (long)(Math.random() * (end - start));
        //生成时间
        list.add(LocalDateTime.ofEpochSecond(start+difference,0, ZoneOffset.ofHours(8)));
    }
    return list;
}

public static void main(String[] args) {
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    List<LocalDateTime> localDateTimeList = createRandomDate(LocalDateTime.now(), LocalDateTime.now().plusHours(1L), 10);
    for (LocalDateTime localDateTime : localDateTimeList) {
        System.out.println(localDateTime.format(formatter));
    }

}