如何声明play json依赖？

Question

我的build.sbt文件（sbt版本是0.13.8）：

lazy val commonSettings = Seq(
  version := "1.0.0",
  scalaVersion := "2.11.6"
)

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

lazy val root = (project in file(".")).
  settings(commonSettings: _*).
  settings(
    name := "myapp",
    libraryDependencies ++= Seq(
      "com.typesafe.play" % "play-json" % "2.3.4",
      "org.scalatest" % "scalatest_2.11" % "2.2.4" % "test",
      "junit" % "junit" % "4.12" % "test"
    )
  )

scalacOptions ++= Seq("-unchecked", "-feature", "-deprecation")

我在尝试编译我的项目时遇到此错误：

[trace] Stack trace suppressed: run last *:update for the full output.
[error] (*:update) sbt.ResolveException: unresolved dependency: com.typesafe.play#play-json_2.11;2.3.4: not found
[error] Total time: 0 s, completed Apr 17, 2015 5:59:28 PM

如何为我的 scala 2.11.6 获取这个 play-json 库？

Answer 1

您可以查看 com.typesafe.play 的所有 play-json 版本 here。他们没有 2.3.4 版本；尝试改用 2.4.0-M3。

"com.typesafe.play" %% "play-json" % "2.4.0-M3"

注意双重 %%，以便正确使用 scalaVersion 来解决依赖关系。

Answer 2

你需要告诉 sbt 应该使用哪个 scala 版本。

你可以是明确的：

"com.typesafe.play" % "play-json_2.11" % "2.3.4",

或者使用 %% (sbt doc) 如下告诉 sbt 使用 scalaVersion :

"com.typesafe.play" %% "play-json" % "2.3.4",

如何声明play json依赖？

How to declare play json dependency?

scala

sbt

play-json