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现在我有一个控制台客户端，它通过ObjectInputStream.readObject()和与服务器通信ObjectOutputStream.writeObject()。对于基于控制台的应用程序，这似乎可以正常工作。

问题是具有 i/o 流的类也有对该对象的引用System.console()！

我如何重构这个类以使其更通用？我几乎想将连接视为一个实用程序，或者，也许，作为一个 bean，然后将其传递给例如 Swing GUI，或者可能是系统控制台。

package net.bounceme.dur.client;

import net.bounceme.dur.data.Title;
import java.net.*;
import java.io.*;
import java.util.Arrays;
import java.util.logging.Logger;
import net.bounceme.dur.data.State;

public class Client {

    private static final Logger log = Logger.getLogger(Client.class.getName());
    private String server = "localhost";
    private int portNumber = 8080;
    private final Console c = System.console();

    private Client() {
    }

    public Client(String server, int portNumber) {
        this.server = server;
        this.portNumber = portNumber;
    }

    public void inputOutput() throws IOException, ClassNotFoundException {
        Socket socket = new Socket(server, portNumber);
        boolean eof = false;
        Title title = null;
        State state = State.undefined;
        try (ObjectOutputStream objectOutputStream = new ObjectOutputStream(socket.getOutputStream());
                ObjectInputStream objectInputStream = new ObjectInputStream(socket.getInputStream())) {
            do {
                try {
                    title = (Title) objectInputStream.readObject();
                    log.info(title.toString());
                    do {
                        state = State.undefined;
                        try {
                            c.printf("enter the state for record:");
                            state = State.valueOf(c.readLine());
                        } catch (java.lang.IllegalArgumentException iae) {
                            log.warning(Arrays.deepToString(State.values()));
                        }
                    } while (state == State.undefined);
                    title.setState(state);
                    title.setTitle("modified from client");
                    objectOutputStream.writeObject(title);
                } catch (java.io.EOFException eofe) {
                    eof = true;
                }
            } while (!eof);
        }
    }

}

也可以看看：

Java - 套接字和 Swing

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