使用sbt编译akka actor源代码时出错

Question

我想要 akka-actor v 2.4.17 的源代码并在我的 windows 机器上编译。

我从以下位置下载了源代码。 https://github.com/akka/akka/tree/v2.4.17

下载完整源代码后在我的机器上安装了sbt，并运行在项目根目录下的命令行中执行sbt命令

虽然运行我遇到了以下错误，请告诉我如何编译此源代码。

错误：

java.lang.NullPointerException
        at java.base/java.util.regex.Matcher.getTextLength(Matcher.java:1769)
        at java.base/java.util.regex.Matcher.reset(Matcher.java:416)
        at java.base/java.util.regex.Matcher.<init>(Matcher.java:253)
        at java.base/java.util.regex.Pattern.matcher(Pattern.java:1147)
        at java.base/java.util.regex.Pattern.split(Pattern.java:1264)
        at java.base/java.util.regex.Pattern.split(Pattern.java:1335)
        at sbt.IO$.pathSplit(IO.scala:797)
        at sbt.IO$.parseClasspath(IO.scala:912)
        at sbt.compiler.CompilerArguments.extClasspath(CompilerArguments.scala:6
6)
        at sbt.compiler.MixedAnalyzingCompiler$.withBootclasspath(MixedAnalyzing
Compiler.scala:188)
        at sbt.compiler.MixedAnalyzingCompiler$.searchClasspathAndLookup(MixedAn
alyzingCompiler.scala:166)
        at sbt.compiler.MixedAnalyzingCompiler$.apply(MixedAnalyzingCompiler.sca
la:176)
        at sbt.compiler.IC$.incrementalCompile(IncrementalCompiler.scala:138)
        at sbt.Compiler$.compile(Compiler.scala:152)
        at sbt.Compiler$.compile(Compiler.scala:138)
        at sbt.Defaults$.sbt$Defaults$$compileIncrementalTaskImpl(Defaults.scala
:860)
        at sbt.Defaults$$anonfun$compileIncrementalTask.apply(Defaults.scala:8
51)
        at sbt.Defaults$$anonfun$compileIncrementalTask.apply(Defaults.scala:8
49)
        at scala.Function1$$anonfun$compose.apply(Function1.scala:47)
        at sbt.$tilde$greater$$anonfun$$u2219.apply(TypeFunctions.scala:40)
        at sbt.std.Transform$$anon.work(System.scala:63)
        at sbt.Execute$$anonfun$submit$$anonfun$apply.apply(Execute.scala:22
8)
        at sbt.Execute$$anonfun$submit$$anonfun$apply.apply(Execute.scala:22
8)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
        at sbt.Execute.work(Execute.scala:237)
        at sbt.Execute$$anonfun$submit.apply(Execute.scala:228)
        at sbt.Execute$$anonfun$submit.apply(Execute.scala:228)
        at sbt.ConcurrentRestrictions$$anon$$anonfun.apply(ConcurrentRestric
tions.scala:159)
        at sbt.CompletionService$$anon.call(CompletionService.scala:28)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executo
rs.java:514)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoo
lExecutor.java:1167)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPo

Answer 1

您似乎在使用 Java 9。我过去在 Java 9 中使用 sbt 时遇到了一些问题。我不确定最近的 sbt 版本是否解决了所有问题，但是切换到 Java 8 很可能会让你成功编译 Akka。

使用sbt编译akka actor源代码时出错

Getting error while compiling akka actor source code using sbt

scala

sbt

akka

java-9

akka-actor