3. 请补充下面的Socket通信程序内容：

（1）Socket通信中的服务端程序：ChatServerSocket.java

package naizi;

import java.io.*;

import java.net.*;

public class ChatServerSocket{

private ChatJFrame chatframe;  //聊天室的图形用户界面

private ServerSocket server;

private Socket client;

public ChatServerSocket(int port, String name)    //约定端口号、网名

{

try {

server = new ServerSocket(port);

client = server.accept();//等待接收客户端的连接申请

BufferedReader cin = new BufferedReader(new InputStreamReader(client.getInputStream()));//获得字符输入流

PrintWriter cout = new PrintWriter(client.getOutputStream(), true);//获得字符输出流

chatframe = new ChatJFrame(name," 服务端端口"+port,cout);

String aline = "";

do{

aline = cin.readLine();//从输入流接收数据（读取一行数据）

if (aline!=null  && !aline.equals("bye"))

chatframe.receive(aline);

}while (aline!=null  && !aline.equals("bye"));

chatframe.setWriter(null);

cin.close();

cout.close();

client.close();

server.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}//创建服务端Socket对象

}

public static void main(String args[])

{

    new ChatServerSocket(2018,"王奕");               //约定端口号，指定网名

}

}

（2）Socket通信中的客户端程序：ChatSocket.java

package naizi;

import java.io.*;

import java.net.*;

public class ChatSocket{

private ChatJFrame chatframe;   //聊天室的图形用户界面

private Socket client;

public ChatSocket(String host, int port, String name) //主机名、端口号、网名

{

try {

client = new Socket(host,port);

BufferedReader cin = new BufferedReader(new InputStreamReader(client.getInputStream()));//获得字符输入流

PrintWriter cout = new PrintWriter(client.getOutputStream(),true);//获得字符输出流

chatframe = new ChatJFrame(name,"客户端主机"+host+" 端口"+port,cout);

String aline = "";

do{

aline = cin.readLine();

if (aline!=null && !aline.equals("bye"))

chatframe.receive(aline);

}while (aline!=null  && !aline.equals("bye"));

chatframe.setWriter(null);

cin.close();

cout.close();

client.close();

} catch (UnknownHostException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}//创建客户端Socket对象向服务端发出连接请求

}

public static void main(String args[])

{

    new ChatSocket("localhost",2018,"阮磊");         //指定主机和端口号，指定网名

}

}

（3）聊天框的图形界面程序：ChatJFrame.java

package naizi;

import java.awt.event.*;

import javax.swing.*;

import java.io.*;

@SuppressWarnings("serial")

public class ChatJFrame extends JFrame implements ActionListener

{

private JTextArea text_receiver;                       //显示对话内容的文本区

private JTextField text_sender;                        //输入发送内容的文本行

private PrintWriter cout;                              //字符输出流对象

private String name;                                   //网名

public ChatJFrame(String name, String title, PrintWriter cout)  //构造方法

{

    super("聊天室  "+name+"  "+title);

    this.setSize(320,240);

    this.setLocation(300,240);

    this.setDefaultCloseOperation(EXIT_ON_CLOSE);

    this.text_receiver = new JTextArea();

    this.text_receiver.setEditable(false);             //不可编辑

    this.getContentPane().add(this.text_receiver);

    JPanel panel = new JPanel();

    this.getContentPane().add(panel,"South");

    this.text_sender = new JTextField(12);

    panel.add(this.text_sender);

    this.text_sender.addActionListener(this);          //注册单击事件监听器

    JButton button_send = new JButton("发送");

    panel.add(button_send);

    button_send.addActionListener(this);

    JButton button_leave = new JButton("离线");

    panel.add(button_leave);

    button_leave.addActionListener(this);

    this.setVisible(true);

    this.setWriter(cout);

    this.name = name;

}

public ChatJFrame()

{

    this("","",null);

}

public void setWriter(PrintWriter cout)                //设置字符输出流对象

{

    this.cout = cout;

}

public void receive(String message)                    //显示对方发来的内容

{

    text_receiver.append(message+"\r\n");

}

public void actionPerformed(ActionEvent e)

{

    if (e.getActionCommand()=="离线")

    {

        if (this.cout!=null)

        {

            this.cout.println(name+"离线");

            this.cout.println("bye");

            this.cout = null;

        }

        text_receiver.append("我离线\n");

    }

    else                                               //发送

    {

        if (this.cout!=null)

        {

            this.cout.println(name+" 说："+text_sender.getText());

            text_receiver.append("我说："+text_sender.getText()+"\n");

            text_sender.setText("");

        }

        else

            text_receiver.append("已离线，不能再发送。\n");

    }

}

public static void main(String args[])

{

    new ChatJFrame();

}

}

巴特西

Java第三次作业第三题

3. 请补充下面的Socket通信程序内容：

（1）Socket通信中的服务端程序：ChatServerSocket.java

（2）Socket通信中的客户端程序：ChatSocket.java

（3）聊天框的图形界面程序：ChatJFrame.java

程序运行结果如下展示：

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