本文整理了Java中java.time.zone.ZoneOffsetTransition类的一些代码示例，展示了ZoneOffsetTransition类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZoneOffsetTransition类的具体详情如下：
包路径：java.time.zone.ZoneOffsetTransition
类名称：ZoneOffsetTransition

ZoneOffsetTransition介绍

[英]A transition between two offsets caused by a discontinuity in the local time-line.

A transition between two offsets is normally the result of a daylight savings cutover. The discontinuity is normally a gap in spring and an overlap in autumn. ZoneOffsetTransition models the transition between the two offsets.

Gaps occur where there are local date-times that simply do not not exist. An example would be when the offset changes from +03:00 to +04:00. This might be described as 'the clocks will move forward one hour tonight at 1am'.

Overlaps occur where there are local date-times that exist twice. An example would be when the offset changes from +04:00 to +03:00. This might be described as 'the clocks will move back one hour tonight at 2am'.

Specification for implementors

This class is immutable and thread-safe.
[中]由当地时间线的不连续性引起的两个偏移之间的过渡。
两个偏移之间的过渡通常是夏令时切换的结果。这种不连续性通常是春季的一个间隙，秋季的一个重叠。ZoneOffsetTransition为两个偏移之间的过渡建模。
当本地日期时间根本不存在时，就会出现间隔。例如，偏移从+03:00更改为+04:00。这可能被描述为“时钟将在今晚凌晨1点向前移动一小时”。
如果存在两次本地日期时间，则会发生重叠。例如，偏移从+04:00更改为+03:00。这可以被描述为“今晚凌晨2点钟会向后拨一小时”。
####实施者规范
这个类是不可变的，是线程安全的。

代码示例

代码示例来源：origin: com.github.seratch/java-time-backport

/**
 * Finds the offset info for a local date-time and transition.
 *
 * @param dt  the date-time, not null
 * @param trans  the transition, not null
 * @return the offset info, not null
 */
private Object findOffsetInfo(LocalDateTime dt, ZoneOffsetTransition trans) {
  LocalDateTime localTransition = trans.getDateTimeBefore();
  if (trans.isGap()) {
    if (dt.isBefore(localTransition)) {
      return trans.getOffsetBefore();
    }
    if (dt.isBefore(trans.getDateTimeAfter())) {
      return trans;
    } else {
      return trans.getOffsetAfter();
    }
  } else {
    if (dt.isBefore(localTransition) == false) {
      return trans.getOffsetAfter();
    }
    if (dt.isBefore(trans.getDateTimeAfter())) {
      return trans.getOffsetBefore();
    } else {
      return trans;
    }
  }
}

代码示例来源：origin: com.github.seratch/java-time-backport

this.standardOffsets[0] = baseStandardOffset;
for (int i = 0; i < standardOffsetTransitionList.size(); i++) {
  this.standardTransitions[i] = standardOffsetTransitionList.get(i).toEpochSecond();
  this.standardOffsets[i + 1] = standardOffsetTransitionList.get(i).getOffsetAfter();
localTransitionOffsetList.add(baseWallOffset);
for (ZoneOffsetTransition trans : transitionList) {
  if (trans.isGap()) {
    localTransitionList.add(trans.getDateTimeBefore());
    localTransitionList.add(trans.getDateTimeAfter());
  } else {
    localTransitionList.add(trans.getDateTimeAfter());
    localTransitionList.add(trans.getDateTimeBefore());
  localTransitionOffsetList.add(trans.getOffsetAfter());
  this.savingsInstantTransitions[i] = transitionList.get(i).getInstant().getEpochSecond();

代码示例来源：origin: com.vaadin/vaadin-server

break;
i = t.getInstant().atZone(zoneId);
if (i.toLocalDate().getYear() != year) {
  break;
    .ofSeconds(t.getInstant().getEpochSecond())
    .toHours();
long duration = Math.max(t.getDuration().toMinutes(), 0);
transitionsList.add(epochHours);
transitionsList.add(duration);

代码示例来源：origin: com.github.seratch/java-time-backport

/**
 * Gets the valid offsets during this transition.
 * <p>
 * A gap will return an empty list, while an overlap will return both offsets.
 *
 * @return the list of valid offsets
 */
List<ZoneOffset> getValidOffsets() {
  if (isGap()) {
    return Collections.emptyList();
  }
  return Arrays.asList(getOffsetBefore(), getOffsetAfter());
}

代码示例来源：origin: com.github.seratch/java-time-backport

/**
 * Does this transition represent a gap in the local time-line.
 * <p>
 * Gaps occur where there are local date-times that simply do not not exist.
 * An example would be when the offset changes from {@code +01:00} to {@code +02:00}.
 * This might be described as 'the clocks will move forward one hour tonight at 1am'.
 *
 * @return true if this transition is a gap, false if it is an overlap
 */
public boolean isGap() {
  return getOffsetAfter().getTotalSeconds() > getOffsetBefore().getTotalSeconds();
}

代码示例来源：origin: ical4j/ical4j

private static void addTransitions(ZoneId zoneId, VTimeZone result, int rawTimeZoneOffsetInSeconds) throws ParseException {
  Map<ZoneOffsetKey, Set<ZoneOffsetTransition>> zoneTransitionsByOffsets = new HashMap<ZoneOffsetKey, Set<ZoneOffsetTransition>>();
  for (ZoneOffsetTransition zoneTransitionRule : zoneId.getRules().getTransitions()) {
    ZoneOffsetKey offfsetKey = ZoneOffsetKey.of(zoneTransitionRule.getOffsetBefore(), zoneTransitionRule.getOffsetAfter());
    Set<ZoneOffsetTransition> transitionRulesForOffset = zoneTransitionsByOffsets.computeIfAbsent(offfsetKey, k -> new HashSet<ZoneOffsetTransition>(1));
    transitionRulesForOffset.add(zoneTransitionRule);
  }
  for (Map.Entry<ZoneOffsetKey, Set<ZoneOffsetTransition>> e : zoneTransitionsByOffsets.entrySet()) {
    Observance observance = (e.getKey().offsetAfter.getTotalSeconds() > rawTimeZoneOffsetInSeconds) ? new Daylight() : new Standard();
    LocalDateTime start = Collections.min(e.getValue()).getDateTimeBefore();
    DtStart dtStart = new DtStart(start.format(DateTimeFormatter.ofPattern(DATE_TIME_TPL)));
    TzOffsetFrom offsetFrom = new TzOffsetFrom(e.getKey().offsetBefore);
    TzOffsetTo offsetTo = new TzOffsetTo(e.getKey().offsetAfter);
    observance.getProperties().add(dtStart);
    observance.getProperties().add(offsetFrom);
    observance.getProperties().add(offsetTo);
    for (ZoneOffsetTransition transition : e.getValue()) {
      RDate rDate = new RDate(new ParameterList(), transition.getDateTimeBefore().format(DateTimeFormatter.ofPattern(DATE_TIME_TPL)));
      observance.getProperties().add(rDate);
    }
    result.getObservances().add(observance);
  }
}

代码示例来源：origin: com.addthis/cronus

/**
 * If there is no daylight savings time transition
 * the ignore any effects of daylight savings and return
 * the local output time.
 *
 * If there is a daylight savings time overlap transition
 * (the clocks are set back) then select the time zone
 * offset from before the transition.
 *
 * If there is a daylight saving time gap transition
 * (the clocks are set forward) then we cannot use the local
 * output time because it is not a legal time value.
 * Move the event to the end of the transition.
 */
private ZonedDateTime outputAdjustDaylightSavings(LocalDateTime output, ZoneId zoneId) {
  if (output == null) {
    return null;
  }
  ZoneRules zoneRules = zoneId.getRules();
  ZoneOffsetTransition transition = zoneRules.getTransition(output);
  if (transition == null) {
    return ZonedDateTime.of(output, zoneId);
  } else if (transition.isOverlap()) {
    return ZonedDateTime.ofInstant(output, transition.getOffsetBefore(), zoneId);
  } else {
    return ZonedDateTime.ofInstant(transition.getDateTimeAfter(), transition.getOffsetAfter(), zoneId);
  }
}

代码示例来源：origin: com.github.seratch/java-time-backport

for (TZRule rule : window.ruleList) {
    ZoneOffsetTransition trans = rule.toTransition(loopStandardOffset, loopSavings);
    if (trans.toEpochSecond() > loopWindowStart.toEpochSecond(loopWindowOffset)) {
    new ZoneOffsetTransition(
      LocalDateTime.ofEpochSecond(loopWindowStart.toEpochSecond(loopWindowOffset), 0, loopStandardOffset),
      loopStandardOffset, window.standardOffset)));
if (loopWindowOffset.equals(effectiveWallOffset) == false) {
  ZoneOffsetTransition trans = deduplicate(
    new ZoneOffsetTransition(loopWindowStart, loopWindowOffset, effectiveWallOffset));
  transitionList.add(trans);
  if (trans.toEpochSecond() < loopWindowStart.toEpochSecond(loopWindowOffset) == false &&
      trans.toEpochSecond() < window.createDateTimeEpochSecond(loopSavings) &&
      trans.getOffsetBefore().equals(trans.getOffsetAfter()) == false) {
    transitionList.add(trans);
    loopSavings = rule.savingAmountSecs;

代码示例来源：origin: com.github.seratch/java-time-backport

@Override
public ZoneOffset getOffset(Instant instant) {
  long epochSec = instant.getEpochSecond();
  // check if using last rules
  if (lastRules.length > 0 &&
      epochSec > savingsInstantTransitions[savingsInstantTransitions.length - 1]) {
    int year = findYear(epochSec, wallOffsets[wallOffsets.length - 1]);
    ZoneOffsetTransition[] transArray = findTransitionArray(year);
    ZoneOffsetTransition trans = null;
    for (int i = 0; i < transArray.length; i++) {
      trans = transArray[i];
      if (epochSec < trans.toEpochSecond()) {
        return trans.getOffsetBefore();
      }
    }
    return trans.getOffsetAfter();
  }
  // using historic rules
  int index  = Arrays.binarySearch(savingsInstantTransitions, epochSec);
  if (index < 0) {
    // switch negative insert position to start of matched range
    index = -index - 2;
  }
  return wallOffsets[index + 1];
}

代码示例来源：origin: net.time4j/time4j-olson

Instant instant = zot.getInstant();
long posixTime = instant.getEpochSecond();
int previousOffset = zot.getOffsetBefore().getTotalSeconds();
int totalOffset = zot.getOffsetAfter().getTotalSeconds();
int dst = Math.toIntExact(zoneRules.getDaylightSavings(instant).getSeconds());
transitions.add(new ZonalTransition(posixTime, previousOffset, totalOffset, dst));

代码示例来源：origin: com.github.seratch/java-time-backport

ZoneOffset before = wallOffsets[i];
ZoneOffset after = wallOffsets[i + 1];
ZoneOffsetTransition trans = new ZoneOffsetTransition(savingsInstantTransitions[i], before, after);
if (trans.isGap()) {
  localTransitionList.add(trans.getDateTimeBefore());
  localTransitionList.add(trans.getDateTimeAfter());
} else {
  localTransitionList.add(trans.getDateTimeAfter());
  localTransitionList.add(trans.getDateTimeBefore());

代码示例来源：origin: com.github.seratch/java-time-backport

} else if (validOffsets.size() == 0) {
  ZoneOffsetTransition trans = rules.getTransition(isoLDT);
  localDateTime = localDateTime.plusSeconds(trans.getDuration().getSeconds());
  offset = trans.getOffsetAfter();
} else {
  if (preferredOffset != null && validOffsets.contains(preferredOffset)) {

代码示例来源：origin: com.github.seratch/java-time-backport

@Override
public ChronoZonedDateTime<D> withEarlierOffsetAtOverlap() {
  ZoneOffsetTransition trans = getZone().getRules().getTransition(LocalDateTime.from(this));
  if (trans != null && trans.isOverlap()) {
    ZoneOffset earlierOffset = trans.getOffsetBefore();
    if (earlierOffset.equals(offset) == false) {
      return new ChronoZonedDateTimeImpl<D>(dateTime, earlierOffset, zone);
    }
  }
  return this;
}

代码示例来源：origin: com.addthis/cronus

/**
 * If we are in the duplicated time period of an overlap transition,
 * then move forwards around the duplicated time period.
 */
private ZonedDateTime inputDaylightSavingsNext(ZonedDateTime input) {
  ZoneId zoneId = input.getZone();
  ZoneRules zoneRules = zoneId.getRules();
  ZoneOffset zoneOffset = input.getOffset();
  LocalDateTime localDateTime = input.toLocalDateTime();
  ZoneOffsetTransition transition = zoneRules.getTransition(localDateTime);
  if (transition == null) {
    return input;
  } else if (zoneOffset.equals(transition.getOffsetAfter())) {
    return ZonedDateTime.ofInstant(transition.getDateTimeBefore(),
                    transition.getOffsetAfter(), zoneId);
  } else {
    return input;
  }
}

代码示例来源：origin: infiniteautomation/ma-core-public

/**
   * @param zdt
   * @return
   */
  public Instant getInstant(ZonedDateTime zdt) {
    ZonedDateTime offset = zdt.withHour(hour).withMinute(minute).withSecond(second).withNano((int)(millisecond * 1000000l));
    LocalDateTime ldt = zdt.toLocalDateTime();
    ldt = ldt.withHour(hour).withMinute(minute).withSecond(second).withNano((int)(millisecond * 1000000l));
    
    if(!zdt.getZone().getRules().isValidOffset(ldt, zdt.getOffset())) {
      //Within a gap of DST so OR after the transition
      ZoneOffsetTransition transition = zdt.getZone().getRules().nextTransition(zdt.toInstant());
      if(!ldt.isAfter(transition.getDateTimeAfter())){
        //In a gap so we shift our time forward to the end of the gap.
        offset = transition.getDateTimeAfter().atZone(zdt.getZone());
      }else {
        //After a gap so ensure we use the next zone offset
        offset = ldt.atOffset(transition.getOffsetAfter()).atZoneSimilarLocal(transition.getOffsetAfter());
      }
    }
    
    return offset.toInstant();
  }
}

代码示例来源：origin: com.github.seratch/java-time-backport

@Override
public ChronoZonedDateTime<D> withLaterOffsetAtOverlap() {
  ZoneOffsetTransition trans = getZone().getRules().getTransition(LocalDateTime.from(this));
  if (trans != null) {
    ZoneOffset offset = trans.getOffsetAfter();
    if (offset.equals(getOffset()) == false) {
      return new ChronoZonedDateTimeImpl<D>(dateTime, offset, zone);
    }
  }
  return this;
}

代码示例来源：origin: com.github.seratch/java-time-backport

for (ZoneOffsetTransition trans : transArray) {
  info = findOffsetInfo(dt, trans);
  if (info instanceof ZoneOffsetTransition || info.equals(trans.getOffsetBefore())) {
    return info;
if (offsetAfter.getTotalSeconds() > offsetBefore.getTotalSeconds()) {
  return new ZoneOffsetTransition(dtBefore, offsetBefore, offsetAfter);
} else {
  return new ZoneOffsetTransition(dtAfter, offsetBefore, offsetAfter);

代码示例来源：origin: com.github.seratch/java-time-backport

ZoneRules rules = zone.getRules();
ZoneOffsetTransition trans = rules.getTransition(ldt);
if (trans != null && trans.isGap()) {
  ldt = trans.getDateTimeAfter();

代码示例来源：origin: com.github.seratch/java-time-backport

ZoneOffsetTransition[] transArray = findTransitionArray(year);
  for (ZoneOffsetTransition trans : transArray) {
    if (epochSec < trans.toEpochSecond()) {
      return trans;
  index += 1;  // exact match, so need to add one to get the next
return new ZoneOffsetTransition(savingsInstantTransitions[index], wallOffsets[index], wallOffsets[index + 1]);

代码示例来源：origin: ical4j/ical4j

startDate = zoneOffsetTransition.getDateTimeBefore();
} else {
  startDate = LocalDateTime.now(zoneId);