OffsetDateTime解析

Question

需要从格式解析日期时间 2016-06-24T13:39:44.687680 。

第一步使用，尝试用行解析没有微秒的时间。

 System.out.println(OffsetDateTime.parse("2011-12-03T10:15:30", DateTimeFormatter.ISO_LOCAL_DATE_TIME));

有例外

Exception in thread "main" java.time.format.DateTimeParseException: Text '2011-12-03T10:15:30' could not be parsed: Unable to obtain OffsetDateTime from TemporalAccessor: {},ISO resolved to 2011-12-03T10:15:30 of type java.time.format.Parsed
    at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1920)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1855)
    at java.time.OffsetDateTime.parse(OffsetDateTime.java:402)
    at timeread.TimeReading.main(TimeReading.java:18)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.time.DateTimeException: Unable to obtain OffsetDateTime from TemporalAccessor: {},ISO resolved to 2011-12-03T10:15:30 of type java.time.format.Parsed
    at java.time.OffsetDateTime.from(OffsetDateTime.java:370)
    at java.time.format.Parsed.query(Parsed.java:226)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851)
    ... 7 more
Caused by: java.time.DateTimeException: Unable to obtain ZoneOffset from TemporalAccessor: {},ISO resolved to 2011-12-03T10:15:30 of type java.time.format.Parsed
    at java.time.ZoneOffset.from(ZoneOffset.java:348)
    at java.time.OffsetDateTime.from(OffsetDateTime.java:359)
    ... 9 more

试图将 DateTimeFormatter 与 TimeZone 一起使用

System.out.println(OffsetDateTime.parse("2011-12-03T10:15:30", DateTimeFormatter.ISO_LOCAL_DATE_TIME.withZone(ZoneId.systemDefault())));

类似的 异常

Exception in thread "main" java.time.format.DateTimeParseException: Text '2011-12-03T10:15:30' could not be parsed: Unable to obtain OffsetDateTime from TemporalAccessor: {InstantSeconds=1322892930},ISO,Europe/Moscow resolved to 2011-12-03T10:15:30 of type java.time.format.Parsed
    at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1920)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1855)
    at java.time.OffsetDateTime.parse(OffsetDateTime.java:402)
    at timeread.TimeReading.main(TimeReading.java:18)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.time.DateTimeException: Unable to obtain OffsetDateTime from TemporalAccessor: {InstantSeconds=1322892930},ISO,Europe/Moscow resolved to 2011-12-03T10:15:30 of type java.time.format.Parsed
    at java.time.OffsetDateTime.from(OffsetDateTime.java:370)
    at java.time.format.Parsed.query(Parsed.java:226)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851)
    ... 7 more
Caused by: java.time.DateTimeException: Unable to obtain ZoneOffset from TemporalAccessor: {InstantSeconds=1322892930},ISO,Europe/Moscow resolved to 2011-12-03T10:15:30 of type java.time.format.Parsed
    at java.time.ZoneOffset.from(ZoneOffset.java:348)
    at java.time.OffsetDateTime.from(OffsetDateTime.java:359)
    ... 9 more

原文由 dmitryvim 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

OffsetDateTime.parse 需要一个包含偏移量的字符串（ +/-hh:mm ），而 "2011-12-03T10:15:30" 没有。使用 --- 解析它并使用 OffsetDateTime.of LocalDateTime.parse 转换结果。

原文由 Alexey Romanov 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

OffsetDateTime 是带有偏移量的日期时间的表示。要创建 OffsetDateTime ，您需要一个区域偏移量。

与 ISO-8601 日历系统中的 UTC/Greenwich 有偏移的日期时间，例如 2007-12-03T10:15:30+01:00。

请参阅： https ://docs.oracle.com/javase/8/docs/api/java/time/OffsetDateTime.html

例如：

 OffsetDateTime.parse("2011-12-03T10:15:30+01:00", DateTimeFormatter.ISO_OFFSET_DATE_TIME);

如果您尝试使用 ZoneId 解析日期时间，您应该使用 ZonedDateTime 。

ISO-8601 日历系统中带有时区的日期时间，例如 2007-12-03T10:15:30+01:00 Europe/Paris。

请参阅： https ://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html

例如：

 ZonedDateTime.parse("2011-12-03T10:15:30", DateTimeFormatter.ISO_LOCAL_DATE_TIME.withZone(ZoneId.systemDefault()));

如果您需要的是 ISO-8601 日历系统中没有时区的日期时间，则可以使用 LocalDateTime 。

ISO-8601 日历系统中没有时区的日期时间，例如 2007-12-03T10:15:30。

请参阅： https ://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html

例如：

 LocalDateTime.parse("2016-06-24T13:39:44.687680", DateTimeFormatter.ISO_LOCAL_DATE_TIME);

原文由 Wilson 发布，翻译遵循 CC BY-SA 3.0 许可协议