根据间隔获取一段时间内的所有时间

public static List<LocalDateTime> getTimeIntervals(LocalDateTime startTime, LocalDateTime endTime, int interval, String intervalType) {List<LocalDateTime> timeIntervals = new ArrayList<>();switch (intervalType) {case "day":while (!startTime.isAfter(endTime)) {timeIntervals.add(startTime);startTime = startTime.plusDays(interval);}break;case "hour":while (!startTime.isAfter(endTime)) {timeIntervals.add(startTime);startTime = startTime.plusHours(interval);}break;case "minute":while (!startTime.isAfter(endTime)) {timeIntervals.add(startTime);startTime = startTime.plusMinutes(interval);}break;case "second":while (!startTime.isAfter(endTime)) {timeIntervals.add(startTime);startTime = startTime.plusSeconds(interval);}break;default:throw new IllegalArgumentException("Unsupported interval type: " + intervalType);}return timeIntervals;}public static List<String> getTimeIntervalStrList(LocalDateTime startTime, LocalDateTime endTime, int interval, String intervalType){List<LocalDateTime> timeIntervals = getTimeIntervals(startTime, endTime, interval, intervalType);List<String> ss = new ArrayList<>();for (LocalDateTime t : timeIntervals) {ss.add(toTimeStr(t));}return ss;}

String,Date,LocalDateTime 之间的转换

public static Date toDate(LocalDateTime a){ZonedDateTime zonedDateTime = a.atZone(ZoneId.systemDefault());Instant instant = zonedDateTime.toInstant();return Date.from(instant);}public static LocalDateTime toLocalDateTime(Date a){Instant instant = a.toInstant();return LocalDateTime.ofInstant(instant,ZoneId.systemDefault());}public static Date getDateByStr(String s){Date date = new Date();try {SimpleDateFormat simpleDateFormat = new SimpleDateFormat(s.contains(" ") ? "yyyy-MM-dd HH:mm:ss" : "yyyy-MM-dd");date = simpleDateFormat.parse(s);} catch (ParseException e) {e.printStackTrace();}finally {return date;}}public static LocalDateTime getLocalDateTimeByStr(String s){DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");return LocalDateTime.parse(s,df);}public static String toTimeStr(LocalDateTime a){DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");return a.format(df);}