package com.company.s3;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.net.ServerSocket;

import java.net.Socket;

public class Server {

    public static void main(String[] args)  throws Exception{

        byte[] byteArray=new byte[2048];

        ServerSocket serverSocket=new ServerSocket(8088);

        Socket socket=serverSocket.accept();

        InputStream inputStream=socket.getInputStream();

        int readLength=inputStream.read(byteArray);

        FileOutputStream pngoutputstream=new FileOutputStream(new File("e:\\2.jpg"));

        while (readLength!=-1){

            pngoutputstream.write(byteArray,0,readLength);

            readLength=inputStream.read(byteArray);

        }

        pngoutputstream.close();

        inputStream.close();

        socket.close();

        serverSocket.close();

    }

}

package com.company.s3;

import java.io.File;

import java.io.FileInputStream;

import java.io.OutputStream;

import java.net.Socket;

public class Client {

    public static void main(String[] args)  throws Exception{

       String pngFile="e:\\1.jpg";

        FileInputStream pngstream=new FileInputStream(new File(pngFile));

        byte[] byteArray=new byte[2048];

        System.out.println("socket begin "+System.currentTimeMillis());

        Socket socket=new Socket("localhost",8088);

        System.out.println("socket end"+System.currentTimeMillis());

        OutputStream outputStream=socket.getOutputStream();

        int readLength=pngstream.read(byteArray);

        while (readLength!=-1){

            outputStream.write(byteArray,0,readLength);

            readLength=pngstream.read(byteArray);

        }

        outputStream.close();

        pngstream.close();

        socket.close();

    }

}