网络编程基础-socket加入多线程

短命女 2022-08-08 13:48 223阅读 0赞

### Server端 ###

public class MyServer { 
        public static ArrayList<Socket> socketList = new ArrayList<Socket>();
        public static void main(String[] args) throws IOException {
            ServerSocket ss = new ServerSocket(30000);
            while(true) {
                Socket s = ss.accept();
                socketList.add(s);
                new Thread(new ServerThread(s)).start();
            }
        }
    }
    public class ServerThread implements Runnable { 
        Socket s = null;
        BufferedReader br = null;
    
        public ServerThread(Socket s) throws IOException {
            this.s = s;
            br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        }
    
        @Override
        public void run() {
            String content = null;
            try {
                while ((content = readFromClient()) != null) {
                    for (Socket s : MyServer.socketList) {
                        PrintStream ps = new PrintStream(s.getOutputStream());
                        ps.println(content);
                    }
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        private String readFromClient() {
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
                MyServer.socketList.remove(s);
            }
            return null;
        }
    
    }

### Client端 ###

public class MyClient { 
        public static void main(String[] args) throws UnknownHostException, IOException {
            Socket s = new Socket("127.0.0.1", 30000);
            new Thread(new ClientThread(s)).start();
            PrintStream ps = new PrintStream(s.getOutputStream());
            String line = null;
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            while((line = br.readLine()) != null) {
                ps.println(line);
            }
        }
    }
    
    
    public class ClientThread implements Runnable { 
        private Socket s = null;
        public BufferedReader br = null;
    
        public ClientThread(Socket s) throws IOException {
            this.s = s;
            br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        }
    
        @Override
        public void run() {
            String content = null;
            try {
                while((content = br.readLine()) != null) {
                    System.out.println(content);
                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    
    }

> client 边读边写