TCP通信程序练习5

声明

文章仅用作个人学习，部分内容为参考他人文章，参考文章原文链接：https://blog.csdn.net/qq_46331050/article/details/117706050

5. 服务器可以接收多个客户端上传的文件，线程封装

客户端：数据来自文本文件，接收服务器反馈
服务器：接收到的数据写入文本文件，给出反馈，代码用线程封装，为每一个客户端开启一个线程

示例代码

客户端程序是一致的，只有文件读取路径部分略有不同

public class ClientDemo1 {
    public static void main(String[] args) throws IOException {
        Socket s = new Socket("127.0.0.1", 10005);

        // 封装文本文件的数据
        BufferedReader br = new BufferedReader(new FileReader("clientDemo1.txt"));
        // 封装输出流写数据
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));

        String line;
        while ((line=br.readLine()) != null) {
            bw.write(line);
            bw.newLine();
            bw.flush();
        }

        s.shutdownOutput();

        // 接收反馈
        BufferedReader brClient = new BufferedReader(new InputStreamReader(s.getInputStream()));
        String data = brClient.readLine();
        System.out.println("服务器的反馈：" + data);

        br.close();
        s.close();
    }
}

服务器端

public class ServerDemo {
    public static void main(String[] args) throws IOException {
        // 创建服务器Socket对象
        ServerSocket ss = new ServerSocket(10005);

        while (true) {
            // 监听客户端连接，返回一个对应的Socket对象
            Socket s = ss.accept();
            // 为每一个客户端开启一个线程
            new Thread(new ServerThread(s)).start();
        }
    }
}

创建多线程

public class ServerThread implements Runnable {
    private Socket s;

    public ServerThread(Socket s) {
        this.s = s;
    }

    @Override
    public void run() {
        // 接收数据写到文本文件
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
//            BufferedWriter bw = new BufferedWriter(new FileWriter("serverDemo.txt"));

            // 解决名称冲突问题
            int count = 0;
            File file = new File("serverDemo[" + count + "].txt");
            while (file.exists()) {
                count++;
                file = new File("serverDemo[" + count + "].txt");
            }
            BufferedWriter bw = new BufferedWriter(new FileWriter(file));

            String line;
            while ((line = br.readLine()) != null) {
                bw.write(line);
                bw.newLine();
                bw.flush();
            }

            // 给出反馈
            BufferedWriter bwServer = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
            bwServer.write("文件上传成功");
            bwServer.newLine();
            bwServer.flush();
            s.shutdownOutput();

            // 释放资源
            s.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}