Scala SBT 无法下载依赖项

Question

我是 scala 和 Akka 的新手。我创建了一个新项目，下面是我的 build.sbt 文件。

name := "akka_essentials"

version := "0.1"

scalaVersion := "2.13.4"

val akkaVersion = "2.5.13"

libraryDependencies ++= Seq(
  "com.typesafe.akka" %% "akka-actor" % akkaVersion,
  "com.typesafe.akka" %% "akka-testkit" % akkaVersion,
  "com.scalatest" %% "scalatest" % "3.0.5"
)

sbt 工具无法下载依赖项。错误日志如下：

[error] stack trace is suppressed; run 'last update' for the full output
[error] (update) sbt.librarymanagement.ResolveException: Error downloading com.typesafe.akka:akka-testkit_2.13:2.5.13
[error]   Not found
[error]   Not found
[error]   not found: C:\Users\Anand\.ivy2\local\com.typesafe.akka\akka-testkit_2.13.5.13\ivys\ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/typesafe/akka/akka-testkit_2.13/2.5.13/akka-testkit_2.13-2.5.13.pom
[error] Error downloading com.scalatest:scalatest_2.13:3.0.5
[error]   Not found
[error]   Not found
[error]   not found: C:\Users\Anand\.ivy2\local\com.scalatest\scalatest_2.13.0.5\ivys\ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/scalatest/scalatest_2.13/3.0.5/scalatest_2.13-3.0.5.pom
[error] Error downloading com.typesafe.akka:akka-actor_2.13:2.5.13
[error]   Not found
[error]   Not found
[error]   not found: C:\Users\Anand\.ivy2\local\com.typesafe.akka\akka-actor_2.13.5.13\ivys\ivy.xml
[error]   not found: https://repo1.maven.org/maven2/com/typesafe/akka/akka-actor_2.13/2.5.13/akka-actor_2.13-2.5.13.pom

我是 Scala 的新手。我没有定义像 ivy.xml 这样的东西。我是java出身，一般用gradle.

请建议解决此问题。

Answer 1

Akka 2.5.13 尚未针对 Scala 2.13 交叉发布 check on Maven。

支持 2.13（发行版，不是里程碑或 RC）的最早版本是 2.5.23. You can see the version matrix for Actors here。

因此您需要使用较新的 Akka 或较旧的 Scala。

对于 Scalatest，您使用了错误的组织方式。是 "org.scalatest" 而不是 "com.scalatest"。

如果您对依赖关系有疑问，请先检查 Maven。

Answer 2

我做了以下更改以使其工作：

name := "project"

version := "0.1"

scalaVersion := "2.12.7"

val akkaVersion = "2.5.13"

libraryDependencies ++= Seq(
  "com.typesafe.akka" %% "akka-actor" % akkaVersion,
  "com.typesafe.akka" %% "akka-testkit" % akkaVersion
 // "com.scalatest" %% "scalatest" % "3.0.5"
)

Scala SBT 无法下载依赖项

Scala SBT is not able to download dependencies

scala

sbt

akka