如何强制Scala使用不同的库版本？

Question

libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.0" % "test"

将以上内容更改为

libraryDependencies ++= Seq(
  "org.scalatest" %% "scalatest" % "3.0.0" % "test"
  exclude("org.scala-lang", "scala-reflect")
  exclude("org.scala-lang.modules", "scala-xml_2.11")
)

解决了问题。但是，与其将Scala-XML2.11版本1.0.5排除在scalatest之外，我想强制scala编译器使用Scala-XML2.11版本1.0.5而不是版本1.0.4。（我在https://mvnrepository.com上研究了这些版本。）因此，我尝试将scalaversion:=“2.11.8”替换为

libraryDependencies ++= Seq(
  "org.scala-lang" % "scala-reflect" % "2.11.8",
  "org.scala-lang.modules" % "scala-xml_2.11" % "1.0.5"
)

然而，这导致

[警告]*org.scala-lang：scala-library:(2.11.8,2.10.4)

[警告]*org.scala-lang：scala-reflect:(2.11.8,2.10.4)

[警告][失败]com.artima.supersafe#supersafe2.10.4；1.1.0！supersafe2.10.4.jar(src):(0ms)

[warn]====本地：已尝试

scalaVersion := "2.11.8"

libraryDependencies ++= Seq(
  "org.scala-lang" % "scala-reflect" % scalaVersion.value,
  "org.scala-lang.modules" %% "scala-xml" % "1.0.5"
)

// ScalaTest
libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.0" % "test"

scalaVersion := "2.11.8"

libraryDependencies ++= Seq(
  "org.scala-lang" % "scala-reflect" % scalaVersion.value,
  "org.scala-lang.modules" %% "scala-xml_2.11" % "1.0.5"
)

// ScalaTest
libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.0" % "test"

[info]
Resolving org.scala-sbt#run;0.13.8 ... [info] Resolving
org.scala-sbt#task-system;0.13.8 ... [info] Resolving
org.scala-sbt#tasks;0.13.8 ... [info] Resolving
org.scala-sbt#tracking;0.13.8 ... [info] Resolving
org.scala-sbt#cache;0.13.8 ... [info] Resolving
org.scala-sbt#testing;0.13.8 ... [info] Resolving
org.scala-sbt#test-agent;0.13.8 ... [info] Resolving
org.scala-sbt#test-interface;1.0 ... [info] Resolving
org.scala-sbt#main-settings;0.13.8 ... [info] Resolving
org.scala-sbt#apply-macro;0.13.8 ... [info] Resolving
org.scala-sbt#command;0.13.8 ... [info] Resolving
org.scala-sbt#logic;0.13.8 ... [info] Resolving
org.scala-sbt#precompiled-2_8_2;0.13.8 ... [info] Resolving
org.scala-sbt#precompiled-2_9_2;0.13.8 ... [info] Resolving
org.scala-sbt#precompiled-2_9_3;0.13.8 ... [trace] Stack trace
suppressed: run 'last *:update' for the full output. [trace] Stack
trace suppressed: run 'last :ssExtractDependencies' for the full
output. [error] (:update) sbt.ResolveException: unresolved
dependency: org.scala-lang.modules#scala-xml_2.11_2.11;1.0.5: not
found [error] (*:ssExtractDependencies) sbt.ResolveException:
unresolved dependency:
org.scala-lang.modules#scala-xml_2.11_2.11;1.0.5: not found [error]
Total time: 4 s, completed 01.10.2016 17:46:55

scalaVersion := "2.11.8"

libraryDependencies ++= Seq(
  "org.scala-lang" % "scala-reflect" % scalaVersion.value,
  "org.scala-lang.modules" %% "scala-xml" % "1.0.5"
)

// ScalaTest
libraryDependencies ++= Seq(
  "org.scalatest" %% "scalatest" % "3.0.0" % "test"
  exclude("org.scala-lang", "scala-reflect")
  exclude("org.scala-lang.modules", "scala-xml")
)

[警告]具有相同组织/名称但版本不同的多个依赖项。为避免冲突，选择一个版本:[warn]*org.scala-lang.modules:scala-xml_2.11:(1.0.5,1.0.4)

name := "MyProject"
version := "0.1.0"
scalaVersion := "2.11.8"

libraryDependencies ++= Seq(
  "org.scala-lang" % "scala-reflect" % scalaVersion.value,
  "org.scala-lang.modules" %% "scala-xml" % "1.0.5"
)

// ScalaTest
//libraryDependencies += "org.scalactic" %% "scalactic" % "3.0.0"
//libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.0" % "test"
libraryDependencies ++= Seq(
  "org.scalatest" %% "scalatest" % "3.0.0" % "test"
  exclude("org.scala-lang", "scala-reflect")
  exclude("org.scala-lang.modules", "scala-xml_2.11")
)

Answer 1

排除特定传递依赖关系的方法如下：

>

运行sbt evicted要找出哪一个项目依赖项正在拉入过时的库，我们假设有问题的库是:com.typesafe.slick。

添加以下排除项（括号很重要）：