我建议使用http://docopt.org/。有一个scala端口，但是Java实现https://github.com/docopt/docopt.java工作得很好，而且似乎维护得更好。这里有一个例子:

import org.docopt.Docopt

import scala.collection.JavaConversions._
import scala.collection.JavaConverters._

val doc =
"""
Usage: my_program [options] <input>

Options:
 --sorted   fancy sorting
""".stripMargin.trim

//def args = "--sorted test.dat".split(" ").toList
var results = new Docopt(doc).
  parse(args()).
  map {case(key, value)=>key ->value.toString}

val inputFile = new File(results("<input>"))
val sorted = results("--sorted").toBoolean

命令行接口Scala Toolkit (CLIST)

这也是我的!(虽然有点晚了)

https://github.com/backuity/clist

与scopt相反，它是完全可变的…但是等等!这给了我们一个很好的语法:

class Cat extends Command(description = "concatenate files and print on the standard output") {

  // type-safety: members are typed! so showAll is a Boolean
  var showAll        = opt[Boolean](abbrev = "A", description = "equivalent to -vET")
  var numberNonblank = opt[Boolean](abbrev = "b", description = "number nonempty output lines, overrides -n")

  // files is a Seq[File]
  var files          = args[Seq[File]](description = "files to concat")
}

还有一个简单的运行方法:

Cli.parse(args).withCommand(new Cat) { case cat =>
    println(cat.files)
}

当然，您可以做更多的事情(多命令，许多配置选项，……)，并且没有依赖性。

我将以一种独特的特性来结束，默认用法(对于多个命令经常被忽略):

对于相对简单的配置，我喜欢滑动参数。

var name = ""
var port = 0
var ip = ""
args.sliding(2, 2).toList.collect {
  case Array("--ip", argIP: String) => ip = argIP
  case Array("--port", argPort: String) => port = argPort.toInt
  case Array("--name", argName: String) => name = argName
}

穷人用来解析键=值对的快速而肮脏的一行代码:

def main(args: Array[String]) {
    val cli = args.map(_.split("=") match { case Array(k, v) => k->v } ).toMap
    val saveAs = cli("saveAs")
    println(saveAs)
}

斯科普特/斯科普特

val parser = new scopt.OptionParser[Config]("scopt") {
  head("scopt", "3.x")

  opt[Int]('f', "foo") action { (x, c) =>
    c.copy(foo = x) } text("foo is an integer property")

  opt[File]('o', "out") required() valueName("<file>") action { (x, c) =>
    c.copy(out = x) } text("out is a required file property")

  opt[(String, Int)]("max") action { case ((k, v), c) =>
    c.copy(libName = k, maxCount = v) } validate { x =>
    if (x._2 > 0) success
    else failure("Value <max> must be >0") 
  } keyValueName("<libname>", "<max>") text("maximum count for <libname>")

  opt[Unit]("verbose") action { (_, c) =>
    c.copy(verbose = true) } text("verbose is a flag")

  note("some notes.\n")

  help("help") text("prints this usage text")

  arg[File]("<file>...") unbounded() optional() action { (x, c) =>
    c.copy(files = c.files :+ x) } text("optional unbounded args")

  cmd("update") action { (_, c) =>
    c.copy(mode = "update") } text("update is a command.") children(
    opt[Unit]("not-keepalive") abbr("nk") action { (_, c) =>
      c.copy(keepalive = false) } text("disable keepalive"),
    opt[Boolean]("xyz") action { (x, c) =>
      c.copy(xyz = x) } text("xyz is a boolean property")
  )
}
// parser.parse returns Option[C]
parser.parse(args, Config()) map { config =>
  // do stuff
} getOrElse {
  // arguments are bad, usage message will have been displayed
}

上面生成了以下用法文本:

scopt 3.x
Usage: scopt [update] [options] [<file>...]

  -f <value> | --foo <value>
        foo is an integer property
  -o <file> | --out <file>
        out is a required file property
  --max:<libname>=<max>
        maximum count for <libname>
  --verbose
        verbose is a flag
some notes.

  --help
        prints this usage text
  <file>...
        optional unbounded args

Command: update
update is a command.

  -nk | --not-keepalive
        disable keepalive    
  --xyz <value>
        xyz is a boolean property

这是我目前使用的。使用干净，没有太多包袱。 (免责声明:我现在维护这个项目)

这在很大程度上是我对同一主题的Java问题的答案的无耻克隆。事实证明，JewelCLI是scala友好的，因为它不需要JavaBean样式的方法来获得自动参数命名。

JewelCLI是一个scala友好的Java库，用于命令行解析，生成干净的代码。它使用带有注解的代理接口来动态地为命令行参数构建类型安全的API。

一个参数接口Person.scala的例子:

import uk.co.flamingpenguin.jewel.cli.Option

trait Person {
  @Option def name: String
  @Option def times: Int
}

参数接口Hello.scala的用法示例:

import uk.co.flamingpenguin.jewel.cli.CliFactory.parseArguments
import uk.co.flamingpenguin.jewel.cli.ArgumentValidationException

object Hello {
  def main(args: Array[String]) {
    try {
      val person = parseArguments(classOf[Person], args:_*)
      for (i <- 1 to (person times))
        println("Hello " + (person name))
    } catch {
      case e: ArgumentValidationException => println(e getMessage)
    }
  }
}

将上述文件的副本保存到一个目录中，并将JewelCLI 0.6 JAR下载到该目录中。

在Linux/Mac OS X/etc / Bash中编译并运行示例:

scalac -cp jewelcli-0.6.jar:. Person.scala Hello.scala
scala -cp jewelcli-0.6.jar:. Hello --name="John Doe" --times=3

在Windows命令提示符中编译并运行示例:

scalac -cp jewelcli-0.6.jar;. Person.scala Hello.scala
scala -cp jewelcli-0.6.jar;. Hello --name="John Doe" --times=3

运行该示例应该产生以下输出:

Hello John Doe
Hello John Doe
Hello John Doe