网络编程-TCP程序实例（简单上传图片）

package netTest;

/*
 * 客户端：
 *     1.服务端点
 *  2.读取客户端已有的图片数据
 *  3.通过socket输出流将数据发给服务端
 *  4.读取服务端的反馈信息
 *  5.关闭。
 *
 */
import java.io.*;
import java.net.*;
import java.util.concurrent.SynchronousQueue;
public class Client {
    public static void main(String[] args) throws Exception {
        Socket s = new Socket(InetAddress.getLocalHost(),6333);
        FileInputStream fis = new FileInputStream("1.jpg");
        OutputStream out = s.getOutputStream();
        byte[] buf = new byte[1024];
        int len = 0;
        while((len = fis.read(buf))!=-1){
            out.write(buf,0,len);
        }
        // 告诉服务端数据以写完
        s.shutdownOutput();
        InputStream in = s.getInputStream();
        byte[] bufIn =new byte[1024];
        int num = in.read(bufIn);
        System.out.println(new String(bufIn,0,num));
        fis.close();
        s.close();
    }
}

package netTest;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {

    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub
        ServerSocket ss = new ServerSocket(6333);
        // 得到客户端对象
        Socket s = ss.accept();
        InputStream in = s.getInputStream();
        FileOutputStream fos = new FileOutputStream("2.jpg");
        byte[] buf = new byte[1024];
        int len = 0;
        while((len = in.read(buf))!=-1){
            fos.write(buf,0,len);
        }
        OutputStream out = s.getOutputStream();
        out.write("上传成功".getBytes());
        out.close();
        s.close();
        ss.close();
    }

}