【发布时间】：2016-01-07 11:09:10
【问题描述】：
堆栈溢出：
使用 sbt-assembly（sbt 插件）和 sbt-multiproject， 我想生成命令行参数中指定的子项目的胖罐子。
命令可能如下：
sbt "assemblyWith hello world"
我定义了四个子项目，分别命名为 hello、world、alien 和 root。 我希望该命令生成 hello-assembly.jar 和 world-assembly.jar。 但还有 alien-assembly.jar。
什么时候触发组装过程？
这是产生问题的示例 build.sbt。 ( 希望能看到日志
'managedProject: ProjectRef(module/hello,hello)'
之前
'Packaging /path/to/dir/module/world/target/scala-2.11/world-assembly-0.1-SNAPSHOT.jar ...'
)
[build.sbt]
import sbt._
import Keys._
import complete.DefaultParsers.spaceDelimited
name := "sbt-query"
scalaVersion in ThisBuild := "2.11.7"
scalacOptions in ThisBuild ++= Seq("-unchecked", "-deprecation", "-feature")
test in assembly in ThisBuild := {}
lazy val hello = (project in file("./module/hello"))
lazy val world = (project in file("./module/world"))
lazy val alien = (project in file("./module/alien"))
lazy val root = (project in file(".")).aggregate(hello, world, alien)
// sbt "assemblyWith hello world"
// aims to produce hello-assembly.jar and world-assembly.jar (not alien-assembly.jar)
lazy val assemblyWith = inputKey[Unit]("assembly sub-projects specified in args")
assemblyWith := {
val args = spaceDelimited("<arg>").parsed
val stateee = state.value
val log = stateee.globalLogging.full
val extractedRoot = sbt.Project.extract(stateee)
val destDirectory = (crossTarget in extractedRoot.currentRef get extractedRoot.structure.data).get
args.collect {
case projectName if (file("module") / projectName).exists =>
ProjectRef(file("module") / projectName, projectName)
}.map { proj =>
log.info(s"managedProject: $proj")
// improve: https://github.com/sbt/sbt/issues/1095
// -> outside the task's definition (i.e. as a top level statement in build.sbt), then it works.
val assemblyJarFile = proj.project match {
case "hello" => assembly.all(ScopeFilter(inProjects(hello))).value.head
case "world" => assembly.all(ScopeFilter(inProjects(world))).value.head
case "alien" => assembly.all(ScopeFilter(inProjects(alien))).value.head
}
log.info(s"out: ${assemblyJarFile.getCanonicalPath}")
// IO.copyFile(assemblyJarFile, destDirectory)
}
}
[项目/build.properties]
sbt.version=0.13.9
[项目/plugins.sbt]
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.13.0")
[目录树]
├─alien
│ └─src
│ └─main
│ └─scala
│ └─com.example.alien -> SayAlien.scala
├─hello
│ └─src
│ └─main
│ └─scala
│ └─com.example.hello -> SayHello.scala
└─world
└─src
└─main
└─scala
└─com.example.world -> SayWorld.scala
[版本]
java version "1.8.0_51"
[日志]
[info] Including from cache: scala-library-2.11.7.jar
[info] Including from cache: scala-library-2.11.7.jar
[info] Including from cache: scala-library-2.11.7.jar
[info] Checking every *.class/*.jar file's SHA-1.
[info] Merging files...
[warn] Merging 'META-INF\MANIFEST.MF' with strategy 'discard'
[warn] Strategy 'discard' was applied to a file
[info] Checking every *.class/*.jar file's SHA-1.
[info] Merging files...
[warn] Merging 'META-INF\MANIFEST.MF' with strategy 'discard'
[warn] Strategy 'discard' was applied to a file
[info] Checking every *.class/*.jar file's SHA-1.
[info] Merging files...
[warn] Merging 'META-INF\MANIFEST.MF' with strategy 'discard'
[warn] Strategy 'discard' was applied to a file
[info] Packaging ...../world-assembly-0.1-SNAPSHOT.jar ...
[info] Packaging ...../alien-assembly-0.1-SNAPSHOT.jar ...
[info] Packaging ...../hello-assembly-0.1-SNAPSHOT.jar ...
[info] Done packaging.
[info] Done packaging.
[info] Done packaging.
[info] managedProject: ProjectRef(module/hello,hello)
[info] out: ...../hello-assembly-0.1-SNAPSHOT.jar
[info] managedProject: ProjectRef(module/world,world)
[info] out: ...../world-assembly-0.1-SNAPSHOT.jar
【问题讨论】：
-
您的问题和代码感觉不一致。您在问题中说“但也是外星人-assembly.jar。”，但在您的代码 cmets 中您说：“旨在生成 hello-assembly.jar 和 world-assembly.jar（不是外星人-assembly.jar）”代码似乎设置得很好，你试过运行“
assemblyWith hello world alien吗？看起来它可以解决问题...... -
@EdgeCaseBerg 谢谢。我在下面发布了答案。