【网络编程】C/S套接字

最新推荐文章于 2025-01-15 13:54:58 发布

ly2499

最新推荐文章于 2025-01-15 13:54:58 发布

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分类专栏： JAVA 文章标签： JAVA

本文链接：https://blog.youkuaiyun.com/weixin_40207820/article/details/90700320

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博客主要围绕模拟客户端上传文件到服务器展开，涉及客户端类和服务器类的相关内容，专注于信息技术领域的文件上传模拟。

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模拟客户端上传文件到服务器

客户端类

package com.it.demo_FileUpload;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class TCPClient {
    public static void main(String[] args) throws IOException {
        Socket socket = new Socket("127.0.0.1", 8888);
        FileInputStream fis = new FileInputStream("C:\\Users\\liyang\\Desktop\\1.jpeg");
        OutputStream os = socket.getOutputStream();
        int len = 0;
        byte[] bytes = new byte[1024];
        while ((len = fis.read(bytes)) != -1) {
            os.write(bytes, 0, len);
        }
        /*
        void shutdownOutput() 禁用此套接字的输出流。
        对于TCP套接字，任何以前写入的数据都将被发送，并且后跟TCP的正常连接终止序列。
         */
        socket.shutdownOutput();
        InputStream is = socket.getInputStream();
        while ((len = is.read(bytes)) != -1) {
            System.out.println(new String(bytes, 0, len));
        }
        fis.close();
        socket.close();
    }
}

服务器类

package com.it.demo_FileUpload;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Random;

public class TCPServer {
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(8888);
        
        while (true) { // 让服务器一直处于监听状态（死循环accept方法）
            Socket socket = server.accept();
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        InputStream is = socket.getInputStream();
                        File file = new File("E:\\upload");
                        if (!file.exists()) {
                            file.mkdir();
                        }
                        String fileName = "it" + System.currentTimeMillis() + new Random().nextInt(999999) + ".jpg";
                        FileOutputStream fos = new FileOutputStream(file + "\\" + fileName);
                        int len = 0;
                        byte[] bytes = new byte[1024];
                        while ((len = is.read(bytes)) != -1) {
                            fos.write(bytes, 0, len);
                        }
                        socket.getOutputStream().write("上传成功！".getBytes());
                        fos.close();
                        socket.close();
                    }
                    catch (IOException e) {
                        System.out.println(e);
                    }
                }
            }).start();
        }
//        server.close();
    }
}