需要依赖：

    <dependency>
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>jetty</artifactId>
        <version>6.1.26</version>

    </dependency>

具体实现（scala）：

import javax.servlet.http.{HttpServletRequest, HttpServletResponse}
import org.apache.spark.sql.SparkSession
import org.mortbay.jetty.{Connector, HttpStatus, Request, Server}
import org.mortbay.jetty.handler._
import org.mortbay.jetty.nio.SelectChannelConnector


object http_spark extends AbstractHandler {


  val ss= SparkSession.builder().appName("category").config("spark.cores.max","4").getOrCreate()

  override def handle(target: String, request: HttpServletRequest, response: HttpServletResponse, dispatch: Int): Unit = {

  response.setContentType("text/html;charset=UTF-8")
  response.setStatus(HttpStatus.ORDINAL_200_OK);

  val nid = request.getParameter("nid")
  val category = request.getParameter("type")

  val df = ss.read.parquet(s"/UZ2/Category_data_high2/${category}/*")

  val c = new category_pipe(nid,df,ss)
  val result = c.result
  val str =result.toJSON.collect().mkString(",")
  response.getWriter().write(s"[${str}]");

  request.asInstanceOf[Request].setHandled(true)
  response.getWriter.close()

  }
  def main(args: Array[String]): Unit = {

    val connector = new SelectChannelConnector()
    connector.setHost(args(0))
    connector.setPort(args(1).toInt)

    val server=new Server()
    server.addConnector(connector)
    server.setHandler(this)
    server.start()
  }
}

                    https://www.cnblogs.com/garfieldcgf/p/5530306.html