Socket通信

效果圖

服務器代碼

public class SocketServer {
    private BufferedReader reader = null;//用於讀取客戶端發來的消息
    private BufferedWriter writer = null;//用於發送消息
    private BufferedReader inputReader = null;//用於輸入消息


    public static void main(String[] args) {
        SocketServer server = new SocketServer();
        server.start();
    }

    private void start() {
        Socket socket = null;
        ServerSocket serverSocket = null;
        try {
            serverSocket = new ServerSocket(9898);
            System.out.println("服務器已開啓,等待客戶端連入");
            while(true){
                socket = serverSocket.accept();
                manageConnect(socket);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                inputReader.close();
                reader.close();
                writer.close();
                serverSocket.close();
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    // 管理連接
    public void manageConnect(final Socket socket) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
                    inputReader = new BufferedReader(new InputStreamReader(
                            System.in));
                    System.out.println("客戶端："+socket.hashCode()+"已連入");
                    reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    startClientReplyListener(reader,socket);
                    String serverMsg;
                    // 發送消息
                    while (!(serverMsg = inputReader.readLine()).equals("結束聊天")) {
                        writer.write(serverMsg + "\n");
                        writer.flush();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

    // 監聽客戶端是否給服務器發送消息
    public void startClientReplyListener(final BufferedReader reader,final Socket socket) {
        new Thread(new Runnable() {

            @Override
            public void run() {
                String receiveMsg;
                try {
                    while ((receiveMsg = reader.readLine()) != null) {
                        System.out.println(socket.hashCode()+":" + receiveMsg);
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

}

客戶端代碼

public class SocketClient {

    public static void main(String[] args) {
        SocketClient client = new SocketClient();
        client.start();
    }

    private void start() {
        BufferedReader inputReader = null;// 用於輸入消息
        BufferedReader reader = null;// 用於讀取客戶端發來的消息
        BufferedWriter writer = null;// 用於發送消息
        Socket socket = null;
        try {
            socket = new Socket("127.0.0.1", 9898);
            writer = new BufferedWriter(new OutputStreamWriter(
                    socket.getOutputStream()));
            inputReader = new BufferedReader(new InputStreamReader(System.in));
            reader = new BufferedReader(new InputStreamReader(
                    socket.getInputStream()));
            startServerReplyListener(reader);
            String clientMsg;
            // 發送消息
            while (!(clientMsg = inputReader.readLine()).equals("結束聊天")) {
                writer.write(clientMsg + "\n");
                writer.flush();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                inputReader.close();
                writer.close();
                socket.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    // 監聽服務器是否給客戶端發送消息
    public void startServerReplyListener(final BufferedReader reader) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                String serverMsg;
                try {
                    // 接收消息
                    while ((serverMsg = reader.readLine()) != null) {
                        System.out.println("服務器：" + serverMsg);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
}