我尝试实例化一个像下面这样的ActorSystem
import akka.actor.{ActorRef, ActorSystem, Props}
object Main {
def main(args: Array[String]) {
val system: ActorSystem = ActorSystem("MySystem")
}
}
我的pom.xml中的依赖项是这样的:
<dependencies>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-actor_2.11</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-archetype-simple</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.11.1</version>
</dependency>
</dependencies>
我认为我在Scala和Akka的版本中存在冲突。我尝试了多种组合,但我总是遇到这种情况:
线程“main”中的异常java.lang.NoSuchMethodError:
scala.Predef$.ArrowAssoc(Ljava/lang/Object;)Ljava/lang/Object;
at akka.actor.setup.ActorSystemSetup$$anonfun$apply$1.apply(ActorSystemSetup.scala:36)
at akka.actor.setup.ActorSystemSetup$$anonfun$apply$1.apply(ActorSystemSetup.scala:36)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:34)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at akka.actor.setup.ActorSystemSetup$.apply(ActorSystemSetup.scala:36)
at akka.actor.ActorSystem$.apply(ActorSystem.scala:287)
at akka.actor.ActorSystem$.apply(ActorSystem.scala:232)
at Main$.main(Main.scala:9)
at Main.main(Main.scala)
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:147)
你有什么想法吗?
答案 0 :(得分:0)
我使用Intellij IDE并在文件中 - &gt;项目结构,有一个名为全局库的部分,其中scala sdk 2.10受到影响。切换到2.11更正问题
答案 1 :(得分:-1)
当然,您应该使用与您的Scala版本2.12相对应的Akka版本:
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-actor_2.12</artifactId>
<version>2.5.0</version>
</dependency>
Scala 2.11和Scala 2.12版本不是二进制兼容的。