我有一个使用build.scala文件使用sbt构建的scala项目。我可以使用sbt-assembly从该项目中生成单个可执行jar文件，而不会出现问题。现在，我想生成多个可执行的jar文件，其中每个文件都包含一组通用的内部和外部基本依赖关系以及不同的外部依赖关系。
当前版本的sbt-assembly是否可以实现？在maven中，这很容易，因为可以在pom中定义多个配置文件，每个配置文件生成一个单独的jar，但是在sbt-assembly中，您将程序集设置传递到您的项目中，但我还没有找到一种方法来修改设置以生成多个jar文件。
Maven配置文件的概念将sbt / Ivy转换为配置。您可以在配置中定义设置，并使sbt-assembly生成两个jar。您可以通过添加将libraryDependency添加到特定配置% "config"。但是，这需要项目预先知道配置。
入build.sbt（要求sbt 0.13.0或以上）：
import AssemblyKeys._
val Dispatch10 = config("dispatch10") extend(Compile)
val TestDispatch10 = config("testdispatch10") extend(Test)
val Dispatch11 = config("dispatch11") extend(Compile)
val TestDispatch11 = config("testdispatch11") extend(Test)
val root = project.in(file(".")).
configs(Dispatch10, TestDispatch10, Dispatch11, TestDispatch11).
settings(
name := "helloworld",
organization := "com.eed3si9n",
scalaVersion := "2.10.2",
compile in Test := inc.Analysis.Empty,
compile in Compile := inc.Analysis.Empty,
libraryDependencies ++= Seq(
"net.databinder.dispatch" %% "dispatch-core" % "0.10.0" % "dispatch10,testdispatch10",
"net.databinder.dispatch" %% "dispatch-core" % "0.11.0" % "dispatch11,testdispatch11",
"org.specs2" %% "specs2" % "2.2" % "test",
"com.github.scopt" %% "scopt" % "3.0.0"
)
).
settings(inConfig(Dispatch10)(Classpaths.configSettings ++ Defaults.configTasks ++ baseAssemblySettings ++ Seq(
test := (test in TestDispatch10).value,
test in assembly := test.value,
assemblyDirectory in assembly := cacheDirectory.value / "assembly-dispatch10",
jarName in assembly := name.value + "-assembly-dispatch10_" + version.value + ".jar"
)): _*).
settings(inConfig(TestDispatch10)(Classpaths.configSettings ++ Defaults.configTasks ++ Defaults.testTasks ++ Seq(
internalDependencyClasspath := Seq((classDirectory in Dispatch10).value).classpath
)): _*).
settings(inConfig(Dispatch11)(Classpaths.configSettings ++ Defaults.configTasks ++ baseAssemblySettings ++ Seq(
test := (test in TestDispatch11).value,
test in assembly := test.value,
assemblyDirectory in assembly := cacheDirectory.value / "assembly-dispatch11",
jarName in assembly := name.value + "-assembly-dispatch11_" + version.value + ".jar"
)): _*).
settings(inConfig(TestDispatch11)(Classpaths.configSettings ++ Defaults.configTasks ++ Defaults.testTasks ++ Seq(
internalDependencyClasspath := Seq((classDirectory in Dispatch11).value).classpath
)): _*)
要在配置中运行组装任务，您需要说：
> dispatch11:assembly
[info] HelloWorldSpec
[info]
[info] The 'Hello world' string should
[info] + contain 11 characters
[info]
[info] Total for specification HelloWorldSpec
[info] Finished in 17 ms
[info] 1 examples, 0 failure, 0 error
[info] Passed: Total 1, Failed 0, Errors 0, Passed 4
[info] Including: scopt_2.10-3.0.0.jar
[info] Including: slf4j-api-1.6.2.jar
[info] Including: netty-3.6.3.Final.jar
[info] Including: scala-library.jar
[info] Including: async-http-client-1.7.16.jar
[info] Including: dispatch-core_2.10-0.11.0.jar
[warn] Merging 'META-INF/NOTICE.txt' with strategy 'rename'
[warn] Merging 'META-INF/license' with strategy 'rename'
[warn] Merging 'META-INF/LICENSE.txt' with strategy 'rename'
[warn] Merging 'META-INF/MANIFEST.MF' with strategy 'discard'
[warn] Strategy 'discard' was applied to a file
[warn] Strategy 'rename' was applied to 3 files
[info] Checking every *.class/*.jar file's SHA-1.
[info] SHA-1: xxxxxxxxxxxx
[info] Packaging /Users/foo/helloworld/target/scala-2.10/helloworld-assembly-dispatch11_0.1-SNAPSHOT.jar ...
[info] Done packaging.
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我来说两句