drawserver.java

面向对象的设计思想

import java.io.*;
import java.net.*;

public class DrawServer implements IoStrategy{
   private DrawModel draw;

    public DrawServer(DrawModel draw) {
    this.draw = draw;
  }

  public void ioService(Socket socket) {
    InputStream is;
    ObjectInputStream ois;
    OutputStream os;
    ObjectOutputStream oos;
    try {
      is = socket.getInputStream();
      ois = new ObjectInputStream(is);
      os = socket.getOutputStream();
      oos = new ObjectOutputStream(os);
      while (true) {
        Command cmd = (Command) ois.readObject();
        cmd.execute(draw);
        oos.writeObject(cmd);
      }
    } catch(Exception e) {
      e.printStackTrace();
    }
  }

  }