java聊天程序（一）

最新推荐文章于 2021-02-22 09:15:04 发布

原创最新推荐文章于 2021-02-22 09:15:04 发布 · 482 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#Java #Socket #聊天工具 #TextField #IO

版本0.1，实现功能：客户端窗体设计、客户端与服务器端的网络连接、“Client端，在TextField中输入文本，按回车键之后，该文本显示在TextArea中”。

client端代码如下：

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;

public class Client {

    public static void main(String[] args) {
    new MyFrame("chat");
    try {
        Socket s = new Socket("127.0.0.1", 6666);
        OutputStream os = s.getOutputStream();
        DataOutputStream dos = new DataOutputStream(os);
        dos.writeUTF("hello, server");
    } catch (IOException e) {
        e.printStackTrace();
    }
    }

}

class MyFrame extends Frame {

    private TextField tf;
    private TextArea ta;

    MyFrame(String s) {
    super(s);
    this.setBounds(300, 300, 400, 300);
    tf = new TextField();
    ta = new TextArea();
    this.add(tf, BorderLayout.SOUTH);
    this.add(ta, BorderLayout.NORTH);
    this.addWindowListener(new MyWindowListner());
    tf.addActionListener(new MyActionListener());
    pack();
    setVisible(true);

    }

    class MyWindowListner extends WindowAdapter {
    public void windowClosing(WindowEvent e) {
        setVisible(false);
        System.exit(0);
    }
    }
   
    class MyActionListener implements ActionListener {

    public void actionPerformed(ActionEvent e) {
        String s = tf.getText();
        ta.append(s + "\n");
        tf.setText("");
    }
   
    }

}

服务器端代码如下：

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


public class Server {

    public static void main(String[] args) {
    try {
        ServerSocket ss = new ServerSocket(6666);
        Socket s = ss.accept();
        System.out.println("a client has been connected!");
        InputStream is = s.getInputStream();
        DataInputStream dis = new DataInputStream(is);
        System.out.println(dis.readUTF());
    } catch (IOException e) {
        e.printStackTrace();
    }
    }

}