Java SE 基础复习-IO与序列化（2）-网络操作 HTTP与SOCKET

一、Socket  文件传输

1、基本文件传输

客户端

 public static void main(String[] args)
     {       
         Socket socket=null;
         FileInputStream fis=null;
         DataOutputStream dos=null;
         int sum=0;
         int length=0;
         File file=new File("H:\TEST\test.jpg");
         long l=file.length();
         try {
             fis=new FileInputStream(file);
             socket=new Socket("127.0.0.1", 23456);
             dos=new DataOutputStream(socket.getOutputStream());
             byte[] b=new byte[8192];
             while((length=fis.read(b))>0)
             {
                 dos.write(b, 0, length);
                 sum+=length;
                 System.out.println("已发送"+(sum*1.0/l)+"%");
             }
             if(sum==l)
             {
                 System.out.println("传送完成！");
             }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            try {
                if(fis!=null)
                    fis.close();
                if(dos!=null)
                    dos.close();
                if(socket!=null)
                    socket.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
         
     }  

服务器端

    public static void main(String[] args)
    {
        ServerSocket serverSocket=null;
        try {
            serverSocket=new ServerSocket(23456);
            while(true)
            {
                Socket socket=serverSocket.accept();
                if(socket!=null)
                    handleFile(socket);
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally
        {
            try {
                if(serverSocket!=null)
                    serverSocket.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
 private static void handleFile(Socket socket)
    {
        int length=0;
        FileOutputStream fos=null;
        DataInputStream dis=null;
        File file=new File("H:\TEST\test2.jpg");
        try {
            dis=new DataInputStream(socket.getInputStream());
            fos=new FileOutputStream(file);
            byte[] buf=new byte[8192];
            while((length=dis.read(buf))>0)
            {
                fos.write(buf, 0, length);
            }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        finally{
            try {
                if(fos!=null)
                {
                    fos.close();
                }
                if(dis!=null)
                {
                    dis.close();
                }
                if(socket!=null)
                {
                    socket.close();
                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

2、文件断点续传

二、http