網路程式設計基礎-socket加入多執行緒

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 邊讀邊寫