标签: sbt-assembly

我在 stackoverflow 中遵循了其他 sbt 程序集合并问题并添加了合并策略，但仍然没有得到解决。我添加了依赖树插件，但它没有显示传递库的依赖关系。我已经使用了 sbt 的最新合并策略，但是这个重复的内容问题仍然存在。

build.sbt:-

import sbtassembly.Log4j2MergeStrategy

name := ""
organization := "" // change to your org
version := "0.1"

scalaVersion := "2.11.8"
val sparkVersion = "2.1.1"

resolvers += "jitpack" at "https://jitpack.io"
resolvers += "bintray-spark-packages" at "https://dl.bintray.com/spark-packages/maven/"

resolvers += Resolver.url("artifactory", url("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases"))(Resolver.ivyStylePatterns)

resolvers += Resolver.url("bintray-sbt-plugins", url("http://dl.bintray.com/sbt/sbt-plugin-releases"))(Resolver.ivyStylePatterns)

resolvers +=Resolver.typesafeRepo("releases")

//addSbtPlugin("org.spark-packages" % "sbt-spark-package" % "0.2.6")



libraryDependencies ++= Seq(
  ("org.apache.spark" %% "spark-core" % "2.1.1" %"provided").
    exclude("commons-beanutils", "commons-beanutils-core").
    exclude("commons-collections", "commons-collections").
    exclude("commons-logging", "commons-logging").
    exclude("com.esotericsoftware.minlog", "minlog"),
  ("org.apache.spark" %% "spark-hive" % "2.1.1" %"provided").
    exclude("commons-beanutils", …

即使使用简单的 Hello 程序，如果我在 build.sbt 文件中添加 play-json 作为库依赖项，当我在 sbt（sbt-assemble 插件）中执行“assemble”命令时，我总是会收到合并错误。

[error] stack trace is suppressed; run last assembly for the full output
[error] (assembly) deduplicate: different file contents found in the following:
[error] /home/heitor/.cache/coursier/v1/https/repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-annotations/2.10.1/jackson-annotations-2.10.1.jar:module-info.class
[error] /home/heitor/.cache/coursier/v1/https/repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-core/2.10.1/jackson-core-2.10.1.jar:module-info.class
[error] /home/heitor/.cache/coursier/v1/https/repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-databind/2.10.1/jackson-databind-2.10.1.jar:module-info.class
[error] /home/heitor/.cache/coursier/v1/https/repo1.maven.org/maven2/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.10.1/jackson-datatype-jdk8-2.10.1.jar:module-info.class
[error] /home/heitor/.cache/coursier/v1/https/repo1.maven.org/maven2/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/2.10.1/jackson-datatype-jsr310-2.10.1.jar:module-info.class

MergeApp.scala

object MergeApp extends App {
  println("Hello")
}

构建.sbt

name := "MergeBug"

version := "0.1"

scalaVersion := "2.13.1"

val playJsonVersion = "2.8.1"

libraryDependencies ++= Seq("com.typesafe.play" %% "play-json" % playJsonVersion)

项目/build.properties

sbt.version = 1.3.8

项目/plugins.sbt

addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.10")

我在sbt构建Scala项目（重复输入 ：）时遇到问题，META-INF/MANIFEST.MF以下几行代码解决了该问题：

assemblyMergeStrategy in assembly := {
  case PathList("META-INF", xs @ _*) =>
    (xs map {_.toLowerCase}) match {
      case ("manifest.mf" :: Nil) | ("index.list" :: Nil) | ("dependencies" :: Nil) => MergeStrategy.discard
      case _ => MergeStrategy.last
    }
}

我现在试图理解在上述情况下双冒号的含义。我在Quora中找到了答案，但这没有帮助。

而且，我是Scala的新手，但实际上并没有帮助。

编辑：

看到答案后，我仍然不明白为什么，因为我们正在创建列表，因此以下内容不起作用（重复的manifest.mf条目不会被丢弃）：

case List("manifest.mf", "index.list", "dependencies") => MergeStrategy.discard

以下内容也不会：（错误：）')' expected but '=>' found.：

case List("manifest.mf") | List(("index.list") | List("dependencies") => MergeStrategy.discard

编辑2：

卸下额外的支架可完成以下工作：

case List("manifest.mf") | List("index.list") | List("dependencies") …

执行任务“Assembly”失败并显示[error] (assembly) java.nio.file.InvalidPathException: Trailing char < > at index 121: C:\Users\IdeaProjects\GlobalConfigEditor\target\scala-2.13\GlobalConfigEditor-SettingKey(This \ This \ This。

构建.sbt

name := "GlobalConfigEditor"

version := "0.3"

scalaVersion := "2.13.1"

mainClass in assembly := Some("globalconfig.ConfigEditorApplication")
assemblyJarName in assembly := s"GlobalConfigEditor-$version.jar"

assemblyMergeStrategy in assembly := {
  case PathList("META-INF", xs@_*) => MergeStrategy.discard
  case PathList("reference.conf") => MergeStrategy.concat
  case x => MergeStrategy.first
}

libraryDependencies += "org.apache.commons" % "commons-lang3" % "3.9"
libraryDependencies += "commons-io" % "commons-io" % "2.6"
libraryDependencies += "ch.qos.logback" % "logback-classic" % "1.2.3"
libraryDependencies += "com.typesafe.scala-logging" …