java - 无法解析 DateTime - 由于时区偏移转换(欧洲/柏林)导致的非法时刻

Question

为什么我无法解析以下日期？

DateTime.parse("2015-03-29 02:35:00", DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss"));

结果:

org.joda.time.IllegalInstantException: Cannot parse "2015-03-29 02:35:00": Illegal instant due to time zone offset transition (Europe/Berlin)
    at org.joda.time.format.DateTimeParserBucket.computeMillis(DateTimeParserBucket.java:471)
    at org.joda.time.format.DateTimeParserBucket.computeMillis(DateTimeParserBucket.java:411)
    at org.joda.time.format.DateTimeFormatter.parseDateTime(DateTimeFormatter.java:882)
    at org.joda.time.DateTime.parse(DateTime.java:160)
    at Testasd.test(Testasd.java:9)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

这里有什么问题？如果我将年份更改为 2014-03-29 02:35:00 就可以了!

Answer 1

因为这个link解释:

Joda-Time only allows the key classes to store valid date-times. For example, 31st February is not a valid date so it can't be stored (except in Partial). The same principle of valid date-times applies to daylight savings time (DST). In many places DST is used, where the local clock moves forward by an hour in spring and back by an hour in autumn/fall. This means that in spring, there is a "gap" where a local time does not exist. The error "Illegal instant due to time zone offset transition" refers to this gap. It means that your application tried to create a date-time inside the gap - a time that did not exist. Since Joda-Time objects must be valid, this is not allowed.

由于夏令时更改，您引用的日期时间不存在。

一个解决方案是改用 parseLocalDateTime。