为什么子项目不能识别依赖关系？

Question

我定义了两个子项目，如下所示：

val Http4sVersion = "0.21.0-M4"
val CirceVersion = "0.12.1"
val Specs2Version = "4.7.0"
val LogbackVersion = "1.2.3"
val ScalaTestVersion = "3.0.8"
val TestContainerVersion = "1.11.3"
val KafkaTestContainerVersion = "1.11.3"
val ConfigVersion = "1.3.4"
val SpringVersion = "5.1.8.RELEASE"
val CatsVersion = "2.0.0"


lazy val settings = Seq(
  organization := "com.sweetsoft",
  name := "connector",
  scalaVersion := "2.13.0",
  addCompilerPlugin("org.typelevel" %% "kind-projector" % "0.10.3"),
  addCompilerPlugin("com.olegpy" %% "better-monadic-for" % "0.3.0"),
  scalacOptions ++= Seq(
    "-deprecation",
    "-encoding", "UTF-8",
    "-language:higherKinds",
    "-language:postfixOps",
    "-feature",
    "-Xfatal-warnings",
  ),
  scalacOptions in(Compile, console) ~= {
    _.filterNot(Set("-Xlint"))
  }

)

lazy val dependencies = Seq(
  "org.http4s" %% "http4s-blaze-server" % Http4sVersion,
  "org.http4s" %% "http4s-blaze-client" % Http4sVersion,
  "org.http4s" %% "http4s-circe" % Http4sVersion,
  "org.http4s" %% "http4s-dsl" % Http4sVersion,
  "io.circe" %% "circe-generic" % CirceVersion,
  "ch.qos.logback" % "logback-classic" % LogbackVersion,
  "org.typelevel" %% "cats-core" % CatsVersion,
  "com.typesafe" % "config" % ConfigVersion % "test",
  "org.scalactic" %% "scalactic" % ScalaTestVersion % "test",
  "org.scalatest" %% "scalatest" % ScalaTestVersion % "test",
  "org.testcontainers" % "testcontainers" % TestContainerVersion % "test",
  "org.testcontainers" % "kafka" % KafkaTestContainerVersion % "test",
  "org.springframework" % "spring-core" % SpringVersion % "test",
  "org.typelevel" %% "cats-laws" % CatsVersion % "test",
  "com.github.alexarchambault" %% "scalacheck-shapeless_1.14" % "1.2.3" % "test",
  "org.scalacheck" %% "scalacheck" % "1.14.0" % "test"
)



lazy val global = project
  .in(file("."))
  .settings(
    settings,
    libraryDependencies ++= dependencies
  )
  .aggregate(core, serversupervisor)


lazy val core = (project in file("core"))
  .settings(settings)


lazy val serversupervisor = (project in file("serversupervisor"))
  .settings(settings)
  .dependsOn(core)

如您所见，这两个子项目分别是core和serversupervisor。

问题是，这两个子项目无法识别依赖关系：

​

​

我使用的是Intellj，正如你所看到的，它不能识别依赖关系。我做错了什么？

Answer 1

将libraryDependencies ++= dependencies放入settings。

global、core和serversupervisor是三个不同的子项目。它们可以有不同的库依赖项。目前您可以将它们添加到global中，但不能添加到core和serversupervisor中。

或者，您可以将libraryDependencies ++= dependencies移动到Global或ThisBuild范围，而不是特定的子项目范围。您可以在顶部添加

ThisBuild / libraryDependencies ++= dependencies

甚至是

Global / libraryDependencies ++= dependencies

https://www.scala-sbt.org/1.x/docs/Multi-Project.html

https://www.scala-sbt.org/1.x/docs/Scopes.html