java 上传文件(文本文件)

/**
 *  java file upload demo
 *  @author:luowen
 *  @time:2013-11-03
 */

import java.net.*;
import java.io.*;


class UploadClient
{
    public static void main(String[] args)throws Exception
    {
        //建立客户端socket对象
        Socket s = new Socket("127.0.0.1",10000);
        
        BufferedReader bur = new BufferedReader(new FileReader("demo.txt"));

        PrintStream ps = new PrintStream(s.getOutputStream(),true);

        String line;

        while((line = bur.readLine()) != null)
        {
            ps.println(line);
        }

        s.shutdownOutput();

        BufferedReader bufr = new BufferedReader(new InputStreamReader(s.getInputStream()));

        while((line = bufr.readLine()) != null)
        {
           System.out.println(line);
        }

        bur.close();
        bufr.close();
        ps.close();
        s.close();
        
    }
}

class UploadServer
{
    public static void main(String[] args)throws Exception
    {
       ServerSocket ss = new ServerSocket(10000);

       Socket s = ss.accept();

       String ip = s.getInetAddress().getHostName();

       System.out.println(ip+"........connected!");

       BufferedReader bufr = new BufferedReader(new InputStreamReader(s.getInputStream()));

       //BufferedWriter bufw = new BufferedWriter(new FileWriter("ServerDemo.txt"));
       PrintWriter bufw = new PrintWriter(new FileWriter("ServerDemo.txt"));

       String line;

       while((line = bufr.readLine()) != null)
       {
            //bufw.write(line,0,line.length());
            //bufw.flush();
            bufw.println(line);
       }

       OutputStream os = s.getOutputStream();

       os.write("上传成功!".getBytes());

       os.close();
       bufr.close();
       bufw.close();
       ss.close();
    }
}