SBT 配置依赖打包

在projectName/project/目录下，新建assembly.sbt文件，添加内容：

addSbtPlugin("com.eed3si9n" % "sbt-assembly" "0.14.3")

本人SBT VERSION 为0.13.15

refresh the whole project,download the plugin !

in the sbt console,execute the command:assembly

ref:

https://segmentfault.com/q/1010000003943723

https://github.com/sbt/sbt-assembly/tree/v0.14.5 (坑，一定要看最新文档)

http://www.scala-sbt.org/0.13/docs/zh-cn/Using-Plugins.html

运行assembly,出现问题：

spark + sbt-assembly: “deduplicate: different file contents found in the following”

jar包依赖冲突导致，

解决办法：在build.sbt文件中添加如下：

assemblyMergeStrategy in assembly := {
    case PathList("javax","servlet",xs @ _*) => MergeStrategy.last
    case PathList("javax","activation",xs @ _*) => MergeStrategy.last
    case PathList("org","apache",xs @ _*) => MergeStrategy.last
    case PathList("com","google","esotericsoftware","codahale","yammer",xs @ _*) => MergeStrategy.last
    case "about.html" => MergeStrategy.rename
    case "meta-inf/ECLIPSEF.RSA" => MergeStrategy.last
    case "meta-inf/mailcap" => MergeStrategy.last
    case "meta-inf/mimetypes.default" => MergeStrategy.last
    case "plugin.properties" => MergeStrategy.last
    case "log4j.properties" => MergeStrategy.last
    case x =>
        val oldStrategy = (assemblyMergeStrategy in assembly).value
        oldStrategy(x)
}

引用：https://stackoverflow.com/questions/30446984/spark-sbt-assembly-deduplicate-different-file-contents-found-in-the-followi

http://blog.csdn.net/oopsoom/article/details/41318599 写的很好，总结很到位！

https://github.com/sbt/sbt-assembly#merge-strategy 官方 英文好难读！