Scala 如何使用Spark Structure Streaming的writeStream（）方法获取本地系统中生成的.csv文件列表

我想知道如何从我的程序中获取.csv文件列表

class LiveStreamingProg {
          def liveData(sparkSession: SparkSession, sparkCont: SparkContext): Unit = {
              val ss = new StreamingContext(sparkCont, Seconds(2))
              val path = "s3a://word.count.spark/";

            val schema = StructType(
              StructField("date", StringType, true) ::
                StructField("close",StringType, true) ::
                StructField("volume", StringType, true) ::
                StructField("open", StringType, true) ::
                StructField("high",StringType,true) ::
                StructField("low", StringType,true) :: Nil)

            val line=sparkSession.readStream
                .format("csv")
                .option("sep",",").schema(schema)
                .load(path)

            val l1=line.writeStream.outputMode("append")
              .format("csv")
              .option("checkpointLocation", "/home/user/StockDataSparkStraming/src/main/scala/CheckPoint")
              .trigger(Trigger.ProcessingTime("5 seconds"))
              .start("/home/user/StockDataSparkStraming/src/main/scala/output")

            l1.awaitTermination()
      }
    }

我无法调用readCSV（）方法，因为我需要所有.csv文件列表