akka Akka Hello World(Scala)
示例
添加akka-actor依赖关系（SBT示例）
libraryDependencies += "com.typesafe.akka" % "akka-actor_2.11" % "2.4.8"
创建演员类：
字符串输出的Actor：
class OutputActor extends Actor {
override def receive: Receive = {
case message => println(message)
}
}用于修改字符串的Actor：
class AppendActor(outputActor: ActorRef) extends Actor {
override def receive: Receive = {
case message: String =>
val changed = s"Hello, $message!"
outputActor ! changed
case unknown =>
println(s"unknown message: $unknown")
}
}创建角色系统并发送消息
object HelloWorld extends App {
val system = ActorSystem("HelloWorld")
val outputActor = system.actorOf(Props[OutputActor], name = "output")
val appendActor = system.actorOf(Props(classOf[AppendActor], outputActor), name = "appender")
appendActor ! "Akka" //发送测试信息
Thread.sleep(500) //等待异步评估
system.terminate() //终止演员系统
}程序输出：
哈kka，阿卡！