Instant Time解析错误（无法从TemporalAccessor获取Instant）
Instant Time parsing error (Unable to obtain Instant from TemporalAccessor)
在 运行 我的程序之后，我在 运行 大约 2 小时后发生了这个奇怪的崩溃，它说它无法解析日期。
Text '2016-10-26T12:31:39.084726218Z' could not be parsed: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477485099, NanoOfSecond=84726218},ISO of type java.time.format.Parsed
at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1919)
有谁知道为什么会这样？因为在网上看的时候发现可能是格式不对，但是因为我没有指定格式所以我不是这样。
解析我的时间戳的代码如下：
Instant instant = Instant.parse(cAdvisor.getTimestamp());
Long epoch = instant.getEpochSecond();
注：cAdvisor.getTimestamp()方法returns一个字符串如：'2016-10-26T12:31:39.084726218Z'
注意 2：我的 java 版本报告了这个
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b115)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b57, mixed mode)
更新#1：以下代码重现了这个问题：
import java.time.Instant;
import java.util.Random;
// one class needs to have a main() method
public class Test
{
// arguments are passed using the text field below this editor
public static void main(String[] args)
{
Random rand = new Random();
for (int i = 0; i < 100000; i++) {
String date = "2016-10-26T12:31:39.0847";
for (int j = 0; j < rand.nextInt(6); j++) {
date += rand.nextInt(10);
}
date += "Z";
date = date.replace("26", "" + (rand.nextInt(20) + 10));
Instant instant = Instant.parse(date);
Long epoch = instant.getEpochSecond();
System.out.println(epoch);
}
}
}
生成以下堆栈跟踪
Exception in thread "main" java.time.format.DateTimeParseException: Text '2016-10-27T12:31:39.0847Z' could not be parsed: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477571499, NanoOfSecond=84700000},ISO of type java.time.format.Parsed
at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1919)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1854)
at java.time.Instant.parse(Instant.java:392)
at Test.main(Test.java:23)
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:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477571499, NanoOfSecond=84700000},ISO of type java.time.format.Parsed
at java.time.Instant.from(Instant.java:375)
at java.time.Instant$$Lambda/1018081122.queryFrom(Unknown Source)
at java.time.format.Parsed.query(Parsed.java:226)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1850)
... 7 more
对于其他遇到此问题的人，指出此错误的根源在于 mac 上的 java 版本过时。
为了升级这个版本，我安装了最新的 JDK 来自：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html。但是安装后，旧文件夹不会更新，需要手动更新。
为此，请导航至：/Library/Java/JavaVirtualMachines/，您将在其中看到包含 jdk 1.8.0 的 2 个不同目录，一个名为 jdk1.8.0.jdk 的目录和一个名为 jdk1.8.0_<version>.jdk 的目录其中 version 是版本号（例如 111）。
现在继续并删除名为 jdk1.8.0.jdk 的目录（或将其移动到 _old 文件夹）并创建一个符号链接指向带有 sudo ln -s jdk1.8.0_<version>.jdk jdk1.8.0.jdk
的新目录
这为我解决了完整的问题，现在错误不再出现。非常感谢@assylias 和@basil-bourque 提出的导致此解决方案的建议。
您的本地 JVM, IDE, or OS 似乎有本地问题。我建议您删除并重新安装 IDE 和 所有 JVM。
在我的电脑上运行
我运行下面的代码用了你循环次数的十倍（一百万）没有问题，没有错误。我在 MacBook Pro Retina（2013 年末）的 macOS El Capitan 上使用 NetBeans 8.2 中的 Java 8 Update 111。
import java.time.Instant;
import java.util.Random;
public class InstantCrash {
// arguments are passed using the text field below this editor
public static void main ( String[] args ) {
Random rand = new Random ();
for ( int i = 0 ; i < 1_000_000 ; i ++ ) {
String date = "2016-10-26T12:31:39.0847";
for ( int j = 0 ; j < rand.nextInt ( 6 ) ; j ++ ) {
date += rand.nextInt ( 10 );
}
date += "Z";
date = date.replace ( "26" , "" + ( rand.nextInt ( 20 ) + 10 ) );
Instant instant = Instant.parse ( date );
Long epoch = instant.getEpochSecond ();
System.out.println ( epoch );
}
}
}
在 IdeOne.com
上运行
查看代码的略微修改版本 运行成功 live on IdeOne.com。
import java.util.*;
import java.lang.*;
import java.io.*;
import java.time.Instant;
import java.util.Random;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static void main (String[] args) throws java.lang.Exception
{
System.out.println( "Starting at: " + Instant.now() );
Random rand = new Random();
for (int i = 0; i < 1_000_000; i++) {
String date = "2016-10-26T12:31:39.0847";
for (int j = 0; j < rand.nextInt(6); j++) {
date += rand.nextInt(10);
}
if( ( i % 100_000 ) == 0 ) {
System.out.println( "So far: " + i + " | date: " + date ) ;
}
date += "Z";
date = date.replace("26", "" + (rand.nextInt(20) + 10));
Instant instant = Instant.parse(date);
Long epoch = instant.getEpochSecond();
// System.out.println(epoch); // Exceeds limit of IdeOne.com.
}
System.out.println( "Done. Now: " + Instant.now() );
}
}
当运行.
Starting at: 2016-10-30T00:46:34.439Z
So far: 0 | date: 2016-10-26T12:31:39.08476
So far: 100000 | date: 2016-10-26T12:31:39.08478
So far: 200000 | date: 2016-10-26T12:31:39.08475
So far: 300000 | date: 2016-10-26T12:31:39.0847827
So far: 400000 | date: 2016-10-26T12:31:39.0847
So far: 500000 | date: 2016-10-26T12:31:39.0847
So far: 600000 | date: 2016-10-26T12:31:39.0847
So far: 700000 | date: 2016-10-26T12:31:39.084709
So far: 800000 | date: 2016-10-26T12:31:39.0847865
So far: 900000 | date: 2016-10-26T12:31:39.084748
Done. Now: 2016-10-30T00:46:37.698Z
在 运行 我的程序之后，我在 运行 大约 2 小时后发生了这个奇怪的崩溃，它说它无法解析日期。
Text '2016-10-26T12:31:39.084726218Z' could not be parsed: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477485099, NanoOfSecond=84726218},ISO of type java.time.format.Parsed
at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1919)
有谁知道为什么会这样？因为在网上看的时候发现可能是格式不对，但是因为我没有指定格式所以我不是这样。
解析我的时间戳的代码如下：
Instant instant = Instant.parse(cAdvisor.getTimestamp());
Long epoch = instant.getEpochSecond();
注：cAdvisor.getTimestamp()方法returns一个字符串如：'2016-10-26T12:31:39.084726218Z'
注意 2：我的 java 版本报告了这个
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b115)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b57, mixed mode)
更新#1：以下代码重现了这个问题：
import java.time.Instant;
import java.util.Random;
// one class needs to have a main() method
public class Test
{
// arguments are passed using the text field below this editor
public static void main(String[] args)
{
Random rand = new Random();
for (int i = 0; i < 100000; i++) {
String date = "2016-10-26T12:31:39.0847";
for (int j = 0; j < rand.nextInt(6); j++) {
date += rand.nextInt(10);
}
date += "Z";
date = date.replace("26", "" + (rand.nextInt(20) + 10));
Instant instant = Instant.parse(date);
Long epoch = instant.getEpochSecond();
System.out.println(epoch);
}
}
}
生成以下堆栈跟踪
Exception in thread "main" java.time.format.DateTimeParseException: Text '2016-10-27T12:31:39.0847Z' could not be parsed: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477571499, NanoOfSecond=84700000},ISO of type java.time.format.Parsed
at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1919)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1854)
at java.time.Instant.parse(Instant.java:392)
at Test.main(Test.java:23)
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:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477571499, NanoOfSecond=84700000},ISO of type java.time.format.Parsed
at java.time.Instant.from(Instant.java:375)
at java.time.Instant$$Lambda/1018081122.queryFrom(Unknown Source)
at java.time.format.Parsed.query(Parsed.java:226)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1850)
... 7 more
对于其他遇到此问题的人，指出此错误的根源在于 mac 上的 java 版本过时。
为了升级这个版本，我安装了最新的 JDK 来自：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html。但是安装后，旧文件夹不会更新，需要手动更新。
为此，请导航至：/Library/Java/JavaVirtualMachines/，您将在其中看到包含 jdk 1.8.0 的 2 个不同目录，一个名为 jdk1.8.0.jdk 的目录和一个名为 jdk1.8.0_<version>.jdk 的目录其中 version 是版本号（例如 111）。
现在继续并删除名为 jdk1.8.0.jdk 的目录（或将其移动到 _old 文件夹）并创建一个符号链接指向带有 sudo ln -s jdk1.8.0_<version>.jdk jdk1.8.0.jdk
这为我解决了完整的问题，现在错误不再出现。非常感谢@assylias 和@basil-bourque 提出的导致此解决方案的建议。
您的本地 JVM, IDE, or OS 似乎有本地问题。我建议您删除并重新安装 IDE 和 所有 JVM。
在我的电脑上运行
我运行下面的代码用了你循环次数的十倍（一百万）没有问题，没有错误。我在 MacBook Pro Retina（2013 年末）的 macOS El Capitan 上使用 NetBeans 8.2 中的 Java 8 Update 111。
import java.time.Instant;
import java.util.Random;
public class InstantCrash {
// arguments are passed using the text field below this editor
public static void main ( String[] args ) {
Random rand = new Random ();
for ( int i = 0 ; i < 1_000_000 ; i ++ ) {
String date = "2016-10-26T12:31:39.0847";
for ( int j = 0 ; j < rand.nextInt ( 6 ) ; j ++ ) {
date += rand.nextInt ( 10 );
}
date += "Z";
date = date.replace ( "26" , "" + ( rand.nextInt ( 20 ) + 10 ) );
Instant instant = Instant.parse ( date );
Long epoch = instant.getEpochSecond ();
System.out.println ( epoch );
}
}
}
在 IdeOne.com
上运行
查看代码的略微修改版本 运行成功 live on IdeOne.com。
import java.util.*;
import java.lang.*;
import java.io.*;
import java.time.Instant;
import java.util.Random;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static void main (String[] args) throws java.lang.Exception
{
System.out.println( "Starting at: " + Instant.now() );
Random rand = new Random();
for (int i = 0; i < 1_000_000; i++) {
String date = "2016-10-26T12:31:39.0847";
for (int j = 0; j < rand.nextInt(6); j++) {
date += rand.nextInt(10);
}
if( ( i % 100_000 ) == 0 ) {
System.out.println( "So far: " + i + " | date: " + date ) ;
}
date += "Z";
date = date.replace("26", "" + (rand.nextInt(20) + 10));
Instant instant = Instant.parse(date);
Long epoch = instant.getEpochSecond();
// System.out.println(epoch); // Exceeds limit of IdeOne.com.
}
System.out.println( "Done. Now: " + Instant.now() );
}
}
当运行.
Starting at: 2016-10-30T00:46:34.439Z
So far: 0 | date: 2016-10-26T12:31:39.08476
So far: 100000 | date: 2016-10-26T12:31:39.08478
So far: 200000 | date: 2016-10-26T12:31:39.08475
So far: 300000 | date: 2016-10-26T12:31:39.0847827
So far: 400000 | date: 2016-10-26T12:31:39.0847
So far: 500000 | date: 2016-10-26T12:31:39.0847
So far: 600000 | date: 2016-10-26T12:31:39.0847
So far: 700000 | date: 2016-10-26T12:31:39.084709
So far: 800000 | date: 2016-10-26T12:31:39.0847865
So far: 900000 | date: 2016-10-26T12:31:39.084748
Done. Now: 2016-10-30T00:46:37.698Z