本文介绍了Java Play akka项目从jdk8迁移到jdk11的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试将使用play和Akka框架在jdk8上构建的项目迁移到jdk11.在此过程中，出现以下错误.有人可以让我知道为什么会引发错误吗?以下是我使用的版本:
I am trying to migrate the project which was built on jdk8 using play and Akka framework to jdk11. During the process, I am getting the below error. Could someone please let me know why is the error being thrown?Below are the versions I am using:
- JDK-11
- SCala 2.12.8
- 播放2.6.7
- 阿卡2.5.13
例外:
java.lang.NumberFormatException: Not a version: 11
at scala.util.PropertiesTrait$class.parts$1(Properties.scala:176)
at scala.util.PropertiesTrait$class.isJavaAtLeast(Properties.scala:180)
at scala.util.Properties$.isJavaAtLeast(Properties.scala:16)
at play.dev.filewatch.FileWatchService$$anon$1.delegate$lzycompute(FileWatchService.scala:68)
at play.dev.filewatch.FileWatchService$$anon$1.delegate(FileWatchService.scala:66)
at play.dev.filewatch.FileWatchService$$anon$1.watch(FileWatchService.scala:79)
at play.runsupport.Reloader.<init>(Reloader.scala:358)
at play.runsupport.Reloader$.reloader$lzycompute$1(Reloader.scala:219)
at play.runsupport.Reloader$.play$runsupport$Reloader$$reloader$1(Reloader.scala:219)
at play.runsupport.Reloader$.startDevMode(Reloader.scala:229)
at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.devModeServer$lzycompute$1(PlayRun.scala:79)
at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.play$sbt$run$PlayRun$$anonfun$$anonfun$$anonfun$$devModeServer$1(PlayRun.scala:79)
at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.apply(PlayRun.scala:102)
at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.apply(PlayRun.scala:65)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
[trace] Stack trace suppressed: run last compile:run for the full output.
[error] (compile:run) java.lang.NumberFormatException: Not a version: 11
推荐答案
https://www.lightbend.com/blog/roadmap-revealed-for-play-2.8-and-lagom-1.6
根据上面的链接，Play将自2.8开始正式支持Java 11.
According to the link above, Play will officially support Java 11 since 2.8.
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