sbt-assembly 是一个非常实用的sbt插件,可以将当前项目的二进制包以及依赖的所有第三方库都打包成一个jar包发布,即one-jar, 对于那种直接运行的应用程序很方便。
1.首先在 project/plugins.sbt: 下加入这段代码:
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.11.2")
2、手工建立 ./assembly.sbt(注意:文件放在根目录下,主要作用是对assembly进行设置):
import AssemblyKeys._ // put this at the top of the file
assemblySettings
// your assembly settings here
3、运行assembly任务,生成./target/scala_x.x.x/projectname-assembly-x.x.x.jar:
assembly
一个可参考的assembly配置:
import AssemblyKeys._
assemblySettings
jarName in assembly := "spark_sbt.jar"
test in assembly := {}
mainClass in assembly := Some( "Spark_Test")
assemblyOption in packageDependency ~= { _.copy(appendContentHash = true) }
mergeStrategy in assembly <<= (mergeStrategy in assembly) { (old) =>
{
case PathList(ps @ _*) if ps.last endsWith "axiom.xml" => MergeStrategy.filterDistinctLines
case PathList(ps @ _*) if ps.last endsWith "Log.class" => MergeStrategy.first
case PathList(ps @ _*) if ps.last endsWith "LogConfigurationException.class" => MergeStrategy.first
case PathList(ps @ _*) if ps.last endsWith "LogFactory.class" => MergeStrategy.first
case PathList(ps @ _*) if ps.last endsWith "SimpleLog$1.class" => MergeStrategy.first
case x => old(x)
}
}