Scala actor的java.lang.NoSuchMethodError [英] java.lang.NoSuchMethodError with Scala actors
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问题描述
我有一个简单的Scala应用程序(从此处获取),我想测试一下。 整个项目已使用SBT成功编译。但是,当我使用 sbt测试
启动测试时,收到以下错误消息:
I have a simple Scala application (taken from here) which I want to test. The whole project is compiled successfully with SBT. However, when I launch the tests with sbt test
I get the following error message:
Could not run test ConnectionTest:java.lang.NoSuchMethodError: akka.actor.Props$.apply(Lscala/Function0;)Lakka/actor/Props;
从互联网搜索中,我得到的印象是我的某些版本不兼容,但这仅仅是一个推测。 可能出什么问题了?
From the internet search, I get the impression that some of my versioning is not compatible but that is merely a guess. What may be wrong?
[测试用例]
import akka.actor.{Props, Actor, ActorSystem, ActorRef}
import akka.testkit.{TestKit, TestActorRef, ImplicitSender}
import org.scalatest.{WordSpecLike, BeforeAndAfterAll}
import org.scalatest.matchers.MustMatchers
class ConnectionTest extends TestKit(ActorSystem("ConnectionSpec"))
with WordSpecLike
with MustMatchers
with BeforeAndAfterAll {
override def afterAll() { system.shutdown() }
"Server" must {
"bind to port " in {
// create server
val server = system.actorOf(Props[Server], name = "server")
expectMsg("Bound to /127.0.0.1:8888")
}
}
}
[ build.sbt]
name := "MyApp"
version := "0.2"
scalaVersion := "2.10.4"
mainClass := Some("akka.Main")
resolvers += "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"
libraryDependencies +=
"com.typesafe.akka" %% "akka-actor" % "2.3.2"
libraryDependencies +=
"com.typesafe.akka" %% "akka-testkit" % "2.1.4" % "test"
libraryDependencies +=
"org.scalatest" % "scalatest_2.10" % "2.0" % "test"
推荐答案
您需要使用相同版本的Akka进行测试。 / p>
You need to use the same version of Akka for testkit.
libraryDependencies +=
"com.typesafe.akka" %% "akka-testkit" % "2.1.4" % "test"
应该是
libraryDependencies +=
"com.typesafe.akka" %% "akka-testkit" % "2.3.2" % "test"
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