Jetty embarcado com Scala em 34 linhas.

HttpBoot.scala

import org.eclipse.jetty.server.{Server, Handler}
import org.eclipse.jetty.server.handler.{HandlerList, ResourceHandler}
import org.eclipse.jetty.servlet.{ServletHolder, ServletContextHandler}
import org.eclipse.jetty.webapp.WebAppContext

object HttpBoot {

  def main(args: Array[String]) {
    val context = buildContext()
    val handlers = buildHandlerList(context)
    startServer(handlers)
  }

  def startServer(handlers:HandlerList) = {
    val server = new Server(8080)
    server.setHandler(handlers)
    server.start
    server.join
  }

  def buildContext(): ServletContextHandler = {
    val webapp:WebAppContext = new WebAppContext();
    webapp.setContextPath("/");
    webapp.setWar(" seuWar.war ");
    webapp
  }

  def buildHandlerList(context:ServletContextHandler): HandlerList = {
    val handlers = new HandlerList
    handlers.setHandlers(Array[Handler](context))
    handlers
  }
}