使用 joda-time new period(long) 时出现 StackOverflowError

发布于 2024-09-19 08:40:42 字数 4039 浏览 8 评论 0原文

首先,抱歉这么长。我可能不需要所有代码,但想确定一下。

其次,我的实际问题是,我是否做错了什么,或者这是 joda-time 库中的错误?

我正在尝试使用 joda-time (1.6.1) 来计算,然后格式化持续时间。

我目前正在使用 Period,这可能是错误的选择。如果是的话请告诉我。 然而,即使这是错误的选择,我也很确定这种情况不应该发生。

我正在使用毫秒初始化一个Period(通过将持续时间(以秒为单位)乘以 1000)。我正在使用 Period,因此我可以对其进行格式化并打印它:

long durationLong = durationSec * 1000;
Period duration = new Period(durationLong);

PeriodFormatter daysHoursMinutes = new PeriodFormatterBuilder()
    .appendHours()
    .appendSeparator(":")
    .appendMinutes()
    .appendSeparator(":")
    .appendSeconds()
    .toFormatter();

String formattedString = daysHoursMinutes.print(callDuration.normalizedStandard());

我收到下面的异常,并查看了源代码以确认循环。

Caused by: java.lang.StackOverflowError
    at java.util.Hashtable.get(Hashtable.java:274)
    at java.util.Properties.getProperty(Properties.java:177)
    at java.lang.System.getProperty(System.java:440)
    at java.lang.System.getProperty(System.java:412)
    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(DateTimeZone.java:190)
    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(DateTimeZone.java:190)

...snip (all the same)...

    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(DateTimeZone.java:190)
    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(Dat

period(long):

public Period(long duration) {
    super(duration, null, null);
}

super(long, periodType, Chronology):

protected BasePeriod(long duration, PeriodType type, Chronology chrono) {
    super();
    type = checkPeriodType(type);
    chrono = DateTimeUtils.getChronology(chrono);
    iType = type;
    iValues = chrono.get(this, duration);
}

DateTimeUtils.getChronology(chrono):

public static final Chronology getChronology(Chronology chrono) {
    if (chrono == null) {
        return ISOChronology.getInstance();
    }
    return chrono;
}

ISOChronology.getInstance():

public static ISOChronology getInstance() {
    return getInstance(DateTimeZone.getDefault());
}

DateTimeZone.getDefault():

public static DateTimeZone getDefault() {
    DateTimeZone zone = cDefault;
    if (zone == null) {
        synchronized(DateTimeZone.class) {
            zone = cDefault;
            if (zone == null) {
                DateTimeZone temp = null;
                try {
                    try {
                        temp = forID(System.getProperty("user.timezone"));
                    } catch (RuntimeException ex) {
                        // ignored
                    }
                    if (temp == null) {
                        temp = forTimeZone(TimeZone.getDefault());
                    }
                } catch (IllegalArgumentException ex) {
                    // ignored
                }
                if (temp == null) {
                    temp = UTC;
                }
                cDefault = zone = temp;
            }
        }
    }
    return zone;
}

forID(String) 调用 getDefault(),这会创建循环:

 public static DateTimeZone forID(String id) {
    if (id == null) {
        return getDefault();
    }
    if (id.equals("UTC")) {
        return DateTimeZone.UTC;
    }
    DateTimeZone zone = cProvider.getZone(id);
    if (zone != null) {
        return zone;
    }
    if (id.startsWith("+") || id.startsWith("-")) {
        int offset = parseOffset(id);
        if (offset == 0L) {
            return DateTimeZone.UTC;
        } else {
            id = printOffset(offset);
            return fixedOffsetZone(id, offset);
        }
    }
    throw new IllegalArgumentException("The datetime zone id is not recognised: " + id);
}

First, sorry this is so long. I probably don't need all the code, but wanted to be sure.

Second, my actual question is, am I doing something wrong, or is this a bug in the joda-time library?

I'm trying to use joda-time (1.6.1) to calculate, then format time durations.

I'm currently using Period, which may be the wrong choice. Please let me know if it is.
However, even if it is the wrong choice, I'm pretty sure this shouldn't happening.

I'm initialising a Period using milliseconds (by multiplying a duration in seconds by 1000). I'm using the Period so I can then format it and print it:

long durationLong = durationSec * 1000;
Period duration = new Period(durationLong);

PeriodFormatter daysHoursMinutes = new PeriodFormatterBuilder()
    .appendHours()
    .appendSeparator(":")
    .appendMinutes()
    .appendSeparator(":")
    .appendSeconds()
    .toFormatter();

String formattedString = daysHoursMinutes.print(callDuration.normalizedStandard());

I get the Exception below, and have looked through the source to confirm the loop.

Caused by: java.lang.StackOverflowError
    at java.util.Hashtable.get(Hashtable.java:274)
    at java.util.Properties.getProperty(Properties.java:177)
    at java.lang.System.getProperty(System.java:440)
    at java.lang.System.getProperty(System.java:412)
    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(DateTimeZone.java:190)
    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(DateTimeZone.java:190)

...snip (all the same)...

    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(DateTimeZone.java:190)
    at org.joda.time.DateTimeZone.getDefault(DateTimeZone.java:132)
    at org.joda.time.DateTimeZone.forID(Dat

Period(long):

public Period(long duration) {
    super(duration, null, null);
}

super(long, PeriodType, Chronology):

protected BasePeriod(long duration, PeriodType type, Chronology chrono) {
    super();
    type = checkPeriodType(type);
    chrono = DateTimeUtils.getChronology(chrono);
    iType = type;
    iValues = chrono.get(this, duration);
}

DateTimeUtils.getChronology(chrono):

public static final Chronology getChronology(Chronology chrono) {
    if (chrono == null) {
        return ISOChronology.getInstance();
    }
    return chrono;
}

ISOChronology.getInstance():

public static ISOChronology getInstance() {
    return getInstance(DateTimeZone.getDefault());
}

DateTimeZone.getDefault():

public static DateTimeZone getDefault() {
    DateTimeZone zone = cDefault;
    if (zone == null) {
        synchronized(DateTimeZone.class) {
            zone = cDefault;
            if (zone == null) {
                DateTimeZone temp = null;
                try {
                    try {
                        temp = forID(System.getProperty("user.timezone"));
                    } catch (RuntimeException ex) {
                        // ignored
                    }
                    if (temp == null) {
                        temp = forTimeZone(TimeZone.getDefault());
                    }
                } catch (IllegalArgumentException ex) {
                    // ignored
                }
                if (temp == null) {
                    temp = UTC;
                }
                cDefault = zone = temp;
            }
        }
    }
    return zone;
}

forID(String) calls getDefault(), which creates the loop:

 public static DateTimeZone forID(String id) {
    if (id == null) {
        return getDefault();
    }
    if (id.equals("UTC")) {
        return DateTimeZone.UTC;
    }
    DateTimeZone zone = cProvider.getZone(id);
    if (zone != null) {
        return zone;
    }
    if (id.startsWith("+") || id.startsWith("-")) {
        int offset = parseOffset(id);
        if (offset == 0L) {
            return DateTimeZone.UTC;
        } else {
            id = printOffset(offset);
            return fixedOffsetZone(id, offset);
        }
    }
    throw new IllegalArgumentException("The datetime zone id is not recognised: " + id);
}

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评论(2

同展鸳鸯锦 2024-09-26 08:40:42

由于循环部分仅在 joda 代码中,我认为这是一个错误。


它已在 trunk 并将在 V2.0 中提供。


资源:

As the looping part is only in the joda code, I would say that's a bug.


It has been corrected on the trunk and will be available in V2.0.


Resources :

迷路的信 2024-09-26 08:40:42

看起来这是一个错误,因为它假设已经设置了 user.timezone 属性。

在这种情况下,这就是解决这个问题的方法 - 只需确保 user.timezone 设置正确即可。遗憾的是你不得不这么做。

Joda Time 在很多地方使用“null 表示默认”——不幸的是,在我看来。我通常更喜欢“null 无效”。在 Noda Time(Joda Time 到 .NET 的端口)中,我们试图摆脱很多这样的事情 - 以及从一开始就防止默认时区如此普遍。

Looks like it's a bug in that it assumes the user.timezone property will have been set.

That's the way to get round it in this case - just make sure that user.timezone is set appropriately. It's a shame that you have to though.

Joda Time uses "null means default" in a lot of places - unfortunately, in my view. I prefer "null is invalid" usually. In Noda Time (a port of Joda Time to .NET) we're trying to get rid of a lot of this kind of thing - as well as preventing the default time zone from being as prevalent in the first place.

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