scala当中的文件操作和网络请求的实现方法

def main(args: Array[String]): Unit = { //注意文件的编码格式，如果编码格式不对，那么读取报错 val file: BufferedSource = Source.fromFile("F://files//file.txt","GBK");  val lines: Iterator[String] = file.getLines() for(line <- lines){  println(line)  } //注意关闭文件 file.close() }

def main(args: Array[String]): Unit = {  val file: BufferedSource = Source.fromFile("F://files//file2.txt","GBK");  val split: Array[String] = file.mkString.split(" ")  println(split.mkString("/t"))  file.close() }

def main(args: Array[String]): Unit = {  val source: BufferedSource = Source.fromURL("http://www.baidu.com")  val string: String = source.mkString  println(string)  source.close() }

def main(args: Array[String]): Unit = {  val writer = new PrintWriter("F:files//printWriter.txt") for(i <- 1 to 100){  writer.println(i)  writer.flush()  }  writer.close() }

def main(args: Array[String]): Unit = { //控制台交互--老API  print("请输入内容:") val consoleLine1 = Console.readLine()  println("刚才输入的内容是:" + consoleLine1)  //控制台交互--新API  print("请输入内容(新API):")  val consoleLine2 = StdIn.readLine()  println("刚才输入的内容是:" + consoleLine2) }

@SerialVersionUID(1L) class Person extends Serializable{  override def toString = name + "," + age  val name = "Nick"  val age = 20 } object PersonMain extends App{  override def main(args: Array[String]): Unit = {  import java.io.{FileOutputStream, FileInputStream, ObjectOutputStream, ObjectInputStream}  val nick = new Person  val out = new ObjectOutputStream(new FileOutputStream("Nick.obj")) out.writeObject(nick) out.close()  val in = new ObjectInputStream(new FileInputStream("Nick.obj")) val saveNick = in.readObject() in.close() println(saveNick)  } }

def main(args: Array[String]): Unit = { import scala.util.matching.Regex  val pattern1 = new Regex("(S|s)cala")  val pattern2 = "(S|s)cala".r  val str = "Scala is scalable and cool"  println((pattern2 findAllIn str).mkString(",")) }