如何将库依赖项更新为Scala版本？

Question

我正在用sbt编译我的项目并且收到UNRESOLVED DEPENDENCIES错误.

事实上,我从在线博客中获取了我使用的示例(一个hello world程序),其使用scalaVersion := "2.10.0"如下所示.我使用的是2.11.2.

如何将库依赖项(在build.sbt)中更新到最新版本的Scala,特别是revision部件？

build.sbt

name := "Hello Test #1"

version := "1.0"

scalaVersion := "2.10.0"

resolvers += "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"

libraryDependencies += "com.typesafe.akka" % "akka-actor_2.10" % "2.2-M1"

错误:

[info] Resolving com.typesafe.akka#akka-actor_2.11.2;2.2-M1 ...
[warn]  module not found: com.typesafe.akka#akka-actor_2.11.2;2.2-M1
[warn] ==== local: tried
[warn]   /home/plard/.ivy2/local/com.typesafe.akka/akka-actor_2.11.2/2.2-M1/ivys/ivy.xml
[warn] ==== public: tried
[warn]   http://repo1.maven.org/maven2/com/typesafe/akka/akka-actor_2.11.2/2.2-M1/akka-actor_2.11.2-2.2-M1.pom
[warn] ==== Typesafe Repository: tried
[warn]   http://repo.typesafe.com/typesafe/releases/com/typesafe/akka/akka-actor_2.11.2/2.2-M1/akka-actor_2.11.2-2.2-M1.pom
[info] Resolving jline#jline;2.12 ...
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: com.typesafe.akka#akka-actor_2.11.2;2.2-M1: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[trace] Stack trace suppressed: run last *:update for the full output.
[error] (*:update) sbt.ResolveException: unresolved dependency: com.typesafe.akka#akka-actor_2.11.2;2.2-M1: not found
[error] Total time: 1 s, completed Aug 11, 2014 10:32:11 AM

Answer 1

name := "Hello Test #1"

version := "1.0"

scalaVersion := "2.11.2"

resolvers += "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"

libraryDependencies += "com.typesafe.akka" %% "akka-actor" % "2.3.4"

这应该做到这一点.注意%%并且没有为Akka工件指定的版本.这样做,SBT会自动将您的Scala版本附加到工件.有关详细信息,请参阅文档.