如何在Scala 3中使用akka？

Question

如何在 Scala 3 中使用 akka ？使用 scala 3 时找不到 akka 依赖项

sbt 错误：

[error]   not found: /Users/admin/.ivy2/localcom.typesafe.akka/akka-actor-typed_3/2.6.15/ivys/ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/typesafe/akka/akka-actor-typed_3/2.6.15/akka-actor-typed_3-2.6.15.pom
[error] (ssExtractDependencies) sbt.librarymanagement.ResolveException: Error downloading com.typesafe.akka:akka-actor-typed_3:2.6.15
[error]   Not found
[error]   Not found
[error]   not found: /Users/admin/.ivy2/localcom.typesafe.akka/akka-actor-typed_3/2.6.15/ivys/ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/typesafe/akka/akka-actor-typed_3/2.6.15/akka-actor-typed_3-2.6.15.pom

Answer 1

akka-actor-typed是针对 Scala 2.12、2.13 发布的，不适用于 Scala 3

https://mvnrepository.com/artifact/com.typesafe.akka/akka-actor-typed

尝试兼容模式

lazy val foo = project.in(file("foo"))
  .settings(
    scalaVersion := "3.0.0",
    libraryDependencies += 
      ("com.typesafe.akka" %% "akka-actor-typed" % "2.6.15")
        .cross(CrossVersion.for3Use2_13)
  )

https://docs.scala-lang.org/scala3/guides/migration/compatibility-classpath.html

更新。 akka-actor-typed自 2.6.17 版本起针对 Scala 3 发布

libraryDependencies += "com.typesafe.akka" %% "akka-actor-typed" % "2.6.17"