006socket基本使用

最新推荐文章于 2024-07-24 10:03:39 发布

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本文介绍了一个使用Java进行网络编程的具体实例，包括客户端和服务端的实现。客户端读取本地图片并发送到服务端，服务端接收图片并保存，同时返回确认信息。


package sock;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class MySock6 {
    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.out.println("只能搞一个啊，别乱来");
            return;

        }

//        String name = "d:/美女.jpg";
        File file = new File(args[0]);
        if (!(file.exists() && file.isFile())) {
            System.out.println("不存在或者不是文件！");

            return;
        }

        if(!file.getName().endsWith(".jpg")){
            System.out.println("只能是.jgp格式，知道不？");
            return;
        }                           //k   m
        if (file.length() > 5 * 1024 * 1024) {
            System.out.println("设备太先进的不行哈,怀旧");

            return;
        }
        FileInputStream inputStream = new FileInputStream(file);
        byte[] arr = new byte[1234];
        int res = 0;
        Socket socket = new Socket("127.0.0.1", 12331);
        OutputStream out = socket.getOutputStream();

        while ((res = inputStream.read(arr)) != -1) {

            out.write(arr);
        }
        socket.shutdownOutput();
        InputStream in2 = socket.getInputStream();
        byte[] bytes = new byte[1234];
        int read = in2.read(bytes);
        System.out.println(new String(bytes,0,read,"utf-8"));
        inputStream.close();
        socket.close();


    }
}

class MySer6{
    public static void main(String[] args) throws Exception {
        ServerSocket serverSocket = new ServerSocket(12331);
        byte[] bytes1 = "我是中文，你翻译看看".getBytes("utf-8");
        System.out.println(new String(bytes1));

        while (true) {
            Socket accept = serverSocket.accept();
        new Thread(new MyThead(accept)).start();//如果是main执行会怎样？



        }


    }
}
class MyThead implements Runnable{
    Socket accept;


    public MyThead(Socket accept) {
        this.accept = accept;
    }

    @Override
    public void run() {
        int count = 1;
        String ip = accept.getInetAddress().getHostAddress();
        try {
            System.out.println( ip+"...............来了");
            File file = new File("d:/cop有美女"+ip+".jpg");
            while (file.exists()) {
                file = new File("d:/"+"("+(count++)+")"+"cop有美女"+ip+".jpg");
            }

            InputStream inputStream = accept.getInputStream();
            FileOutputStream fileOutputStream = new FileOutputStream(file);
            byte[] bytes = new byte[1234];
            int res = 0;
            while ((res = inputStream.read(bytes)) != -1) {
                fileOutputStream.write(bytes);
            }
            OutputStream outputStream = accept.getOutputStream();
            outputStream.write("我也得到美女了".getBytes());


            fileOutputStream.close();

        } catch (IOException e) {
            throw new RuntimeException(ip + "：没有得到美女啊，可惜了");
        } finally {

        }
    }
}