1、服務器端程序

package com.test3;

import java.io.*;

import java.net.*;

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

public class MyServer3 extends JFrame implements ActionListener{

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

new MyServer3();

}

JTextArea jta = null;

JTextField jtf = null;

JButton sendBtn = null;

JPanel jp = null;

JScrollPane jsp = null;

//把信息發給客戶端的對象

PrintWriter pw = null;

public MyServer3()

{

//

jta = new JTextArea();

jtf = new JTextField(20);

sendBtn = new JButton("send");

sendBtn.addActionListener(this);

sendBtn.setActionCommand("send");

jsp = new JScrollPane(jta);

jp = new JPanel();

jp.add(jtf);

jp.add(sendBtn);

this.add(jsp,BorderLayout.CENTER);

this.add(jp,BorderLayout.SOUTH);

this.setSize(400, 300);

this.setTitle("QQ簡易聊天-服務器端");

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

this.setResizable(false);

try {

//服務器監聽

ServerSocket ss = new ServerSocket(9988);

//等待客戶端連接

Socket s = ss.accept();

BufferedReader br = new BufferedReader

(new InputStreamReader(s.getInputStream()));

pw = new PrintWriter(s.getOutputStream(),true);

//讀取從客戶端發來的信息

while(true) {

String info = br.readLine();

jta.append("client "+getTime()+"\r\n"+info+"\r\n");

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getActionCommand().equals("send")) {

//把服務器在jtf寫的內容發送給客戶端

String info = jtf.getText();

jta.append("server "+getTime()+"\r\n"+info+"\r\n");

pw.println(info);

//清空發送框內容

jtf.setText("");

}

}

//獲取系統時間

public String getTime()

{

Calendar c = Calendar.getInstance();//可以對每個時間域單獨修改

int hour = c.get(Calendar.HOUR_OF_DAY);

int minute = c.get(Calendar.MINUTE);

int second = c.get(Calendar.SECOND);

return hour+":"+ minute+":"+second;

}

}

2、客戶端程序

package com.test3;

import java.io.*;

import java.net.*;

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

public class MyClient3 extends JFrame implements ActionListener{

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

new MyClient3();

}

JTextArea jta = null;

JTextField jtf = null;

JButton sendBtn = null;

JPanel jp = null;

JScrollPane jsp = null;

PrintWriter pw = null;

public MyClient3()

{

//

jta = new JTextArea();

jtf = new JTextField(20);

sendBtn = new JButton("send");

sendBtn.addActionListener(this);

sendBtn.setActionCommand("send");

jsp = new JScrollPane(jta);

jp = new JPanel();

jp.add(jtf);

jp.add(sendBtn);

this.add(jsp,BorderLayout.CENTER);

this.add(jp,BorderLayout.SOUTH);

this.setSize(400, 300);

this.setTitle("QQ簡易聊天-客戶端");

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

this.setResizable(false);

try {

Socket s = new Socket("127.0.0.1",9988);

BufferedReader br = new BufferedReader

(new InputStreamReader(s.getInputStream()));

pw = new PrintWriter(s.getOutputStream(),true);

while(true) {

//不停的讀取服務器端發來的信息

String info = br.readLine();

jta.append("server "+getTime()+"\r\n"+info+"\r\n");

}

} catch (Exception e) {

// TODO: handle exception

}

}

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getActionCommand().equals("send")) {

String info = jtf.getText();

//把客戶端發送的信息顯示到jta

jta.append("client "+getTime()+"\r\n"+info+"\r\n");

pw.println(info);

jtf.setText("");

}

}

//獲取系統時間

public String getTime()

{

Calendar c = Calendar.getInstance();//可以對每個時間域單獨修改

int hour = c.get(Calendar.HOUR_OF_DAY);

int minute = c.get(Calendar.MINUTE);

int second = c.get(Calendar.SECOND);

return hour+":"+ minute+":"+second;

}

}

3、演示

總結

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