003、scala寫入讀取本地文件操作

  def write(fileName: String)(datas: Array[String]): Unit = {
    val writer = new PrintWriter(new File(fileName))
    println("--------數據寫入--------")
    for (s <- datas) {
//      println(s)
      writer.write(s + "\n")
    }
    writer.close()
  }


  /**
    * 數據讀取
    *
    * @param fileName 文件
    * @return
    */
  def read(fileName: String) = {
    val txt_data = Source.fromFile(fileName)
    val nodes = new ArrayBuffer[String]()

    val array = txt_data.getLines().filter(x => x.isInstanceOf[String]).toArray
    array.foreach(
      x => {
        nodes.append(x)
      }
    )
    nodes
  }