使用 Like / Like Streams / Like HTTP 时的 Like 版本冲突

Question

我正在尝试使用 Scala 2.12.3、sbt 0.13.6 和我的 build.sbt 文件中的以下库依赖项构建项目：

libraryDependencies ++= Seq(
  "com.typesafe.akka" %% "akka-actor" % "2.5.4",
  "com.typesafe.akka" %% "akka-stream" % "2.5.4",
  "com.typesafe.akka" %% "akka-stream-testkit" % "2.5.4" % Test,
  "com.typesafe.akka" %% "akka-http" % "10.0.9",
  "com.typesafe.akka" %% "akka-http-core" % "10.0.9",
  "org.scalatest" %% "scalatest" % "3.0.1" % Test)

但是，我不断收到以下有关版本冲突的警告...看来 akka-http 对 Akka / Streams 2.4.19 版具有传递依赖性。我最近发现了一个类似的，它建议显式添加 akka-streams 作为依赖项，并确保它与 akka-actor 的版本相同。以下是依赖性警告：

[warn] Found version conflict(s) in library dependencies; some are 
suspected to be binary incompatible:
[warn] 
[warn]  * com.typesafe.akka:akka-stream_2.12:2.5.4 is selected over 
2.4.19
[warn]      +- com.typesafe.akka:akka-http-core_2.12:10.0.9       
(depends on 2.4.19)
[warn]      +- com.werner.opttech:dependency-test_2.12:0.0.0      
(depends on 2.4.19)
[warn] 
[warn]  * com.typesafe.akka:akka-actor_2.12:2.5.4 is selected over 
2.4.19
[warn]      +- com.werner.opttech:dependency-test_2.12:0.0.0      
(depends on 2.5.4)
[warn]      +- com.typesafe.akka:akka-stream_2.12:2.5.4           
(depends on 2.5.4)
[warn]      +- com.typesafe.akka:akka-parsing_2.12:10.0.9         
(depends on 2.4.19)

关于如何解决此错误的任何建议，以便我可以使用最新版本的 akka、akka 流和 akka http？谢谢！

Answer 1

您的配置是正确的，因为它遵循您提到的 compatibility guidelines。我认为您将警告消息误解为错误；您正在使用这些库的 2.5.4 版本。仔细看看这个片段：

[warn]  * com.typesafe.akka:akka-actor_2.12:2.5.4 is selected over 2.4.19

sbt 确实选择了 akka-actor 库的 2.5.4 版而不是 2.4.19 版。

此外，运行 show update 在 sbt 控制台输出以下内容：

[info]  com.typesafe.akka:akka-actor_2.12
[info]          - 2.5.4
[info]                  status: release
[info]                  publicationDate: Thu Aug 10 09:17:00 EDT 2017
....
[info]          - 2.4.19
[info]                  evicted: true
[info]                  evictedData: latest-revision

sbt 驱逐了 akka-actor 的 2.4.19 版以支持 2.5.4 版。

警告消息实际上确认您正在使用当前版本的 Akka 工具。

Answer 2

chunjef 的回答是 correct.If 你确实想清除警告，将以下代码添加到你的 build.sbt.

conflictManager := ConflictManager.strict

dependencyOverrides += "com.typesafe.akka" %% "akka-actor" % "2.5.4"

dependencyOverrides += "com.typesafe.akka" %% "akka-stream" % "2.5.4"

dependencyOverrides += "org.scala-lang" % "scala-library" % "2.12.3"

Answer 3

相关类型： akka-http 10.1.0-RC1 removes the transient dependency:

we changed the policy not to depend on akka-stream explicitly any more but mark it as a provided dependency in our build. That means that you will have to always add a manual dependency to akka-stream.

使用 Like / Like Streams / Like HTTP 时的 Like 版本冲突

Conflicting Akka versions when using Akka / Akka Streams / Akka HTTP

scala

sbt

akka

akka-stream

akka-http