急需一個java編程實現(xiàn)的簡單聊天窗口代碼

import java.awt.*;

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import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ClientDemo01 {

public static void main(String[] args){

JFrame f=new JFrame("AA");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(15,30);

ta.setEditable(false); //文本域只讀

JScrollPane sp=new JScrollPane(ta); //滾動窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("發(fā)送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

socket=new Socket("192.168.0.4",5000);

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread01 mt=new MyThread01(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener01(tf,ta,bos));

}

}

class ButtonActionListener01 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener01(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText();

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("AA:"+message+"\n"); //添加到文本域并換行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("發(fā)送失敗");

}

}

}

}

class MyThread01 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread01(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("BB:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

} import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ServerDemo01{

public static void main(String[] args){

JFrame f=new JFrame("BB");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(12,30); //文本域，第一個參數(shù)為行數(shù)，第二個參數(shù)為列數(shù)

ta.setEditable(false); //文本域只讀

JScrollPane sp=new JScrollPane(ta); //滾動窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("發(fā)送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

ServerSocket server=null;

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

server=new ServerSocket(5000);

//ta.append("等待AA連接...\n");

socket=server.accept();

//ta.append("AA已連接\n");

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread1 mt=new MyThread1(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener1(tf,ta,bos));

}

}

class ButtonActionListener1 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener1(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText(); //獲取文本框中的內(nèi)容

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("BB:"+message+"\n"); //添加到文本域并換行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("發(fā)送失?。?);

}

}

}

}

class MyThread1 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread1(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("AA:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

}

用JAVA 編寫簡單網(wǎng)絡(luò)聊天程序

/**

* 基于UDP協(xié)議的聊天程序

*

* 2007.9.18

* */

//導(dǎo)入包

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

import java.net.*;

public class Chat extends JFrame implements ActionListener

{

//廣播地址或者對方的地址

public static final String sendIP = "172.18.8.255";

//發(fā)送端口9527

public static final int sendPort = 9527;

JPanel p = new JPanel();

List lst = new List(); //消息顯示

JTextField txtIP = new JTextField(18); //填寫IP地址

JTextField txtMSG = new JTextField(20); //填寫發(fā)送消息

JLabel lblIP = new JLabel("IP地址:");

JLabel lblMSG = new JLabel("消息:");

JButton btnSend = new JButton("發(fā)送");

byte [] buf;

//定義DatagramSocket的對象必須進行異常處理

//發(fā)送和接收數(shù)據(jù)報包的套接字

DatagramSocket ds = null;

//=============構(gòu)造函數(shù)=====================

public Chat()

{

CreateInterFace();

//注冊消息框監(jiān)聽器

txtMSG.addActionListener(this);

btnSend.addActionListener(this);

try

{

//端口:9527

ds =new DatagramSocket(sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

//============接受消息============

//匿名類

new Thread(new Runnable()

{

public void run()

{

byte buf[] = new byte[1024];

//表示接受數(shù)據(jù)報包

while(true)

{

try

{

DatagramPacket dp = new DatagramPacket(buf,1024,InetAddress.getByName(txtIP.getText()),sendPort);

ds.receive(dp);

lst.add("【消息來自】◆" + dp.getAddress().getHostAddress() + "◆"+"【說】:" + new String (buf,0,dp.getLength()) /*+ dp.getPort()*/,0);

}

catch(Exception e)

{

if(ds.isClosed())

{

e.printStackTrace();

}

}

}

}

}).start();

//關(guān)閉窗體事件

this.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent w)

{

System.out.println("test");

int n=JOptionPane.showConfirmDialog(null,"是否要退出?","退出",JOptionPane.YES_NO_OPTION);

if(n==JOptionPane.YES_OPTION)

{

dispose();

System.exit(0);

ds.close();//關(guān)閉ds對象//關(guān)閉數(shù)據(jù)報套接字

}

}

});

}

//界面設(shè)計布局

public void CreateInterFace()

{

this.add(lst,BorderLayout.CENTER);

this.add(p,BorderLayout.SOUTH);

p.add(lblIP);

p.add(txtIP);

p.add(lblMSG);

p.add(txtMSG);

p.add(btnSend);

txtIP.setText(sendIP);

//背景顏色

lst.setBackground(Color.yellow);

//JAVA默認風(fēng)格

this.setUndecorated(true);

this.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);

this.setSize(600,500);

this.setTitle("〓聊天室〓");

this.setResizable(false);//不能改變窗體大小

this.setLocationRelativeTo(null);//窗體居中

this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

this.setVisible(true);

txtMSG.requestFocus();//消息框得到焦點

}

//===============================Main函數(shù)===============================

public static void main(String[]args)

{

new Chat();

}

//================================發(fā)送消息===============================

//消息框回車發(fā)送消息事件

public void actionPerformed(ActionEvent e)

{

//得到文本內(nèi)容

buf = txtMSG.getText().getBytes();

//判斷消息框是否為空

if (txtMSG.getText().length()==0)

{

JOptionPane.showMessageDialog(null,"發(fā)送消息不能為空","提示",JOptionPane.WARNING_MESSAGE);

}

else{

try

{

InetAddress address = InetAddress.getByName(sendIP);

DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);

ds.send(dp);

}

catch(Exception ex)

{

ex.printStackTrace();

}

}

txtMSG.setText("");//清空消息框

//點發(fā)送按鈕發(fā)送消息事件

if(e.getSource()==btnSend)

{

buf = txtMSG.getText().getBytes();

try

{

DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

txtMSG.setText("");//清空消息框

txtMSG.requestFocus();

}

}

}

jsp網(wǎng)頁怎么實現(xiàn)即時聊天

jsp中可以實現(xiàn)簡單的聊天功能，例子如下：

chat.jsp代碼如下：

%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%

%@ page language="java" contentType="text/html;charset=GB2312"%

html

body

%

try{

request.setCharacterEncoding("GB2312");

String mywords=request.getParameter("message");

String t="";

if(application.getAttribute("words")==null mywords!=null){

t= (String)request.getRemoteAddr() + ":" + mywords + "br/";

application.setAttribute("words",(Object)t);

out.println(t);

}

else if(mywords!=null){

t=(String)application.getAttribute("words");

t += (String)request.getRemoteAddr() + ":" + mywords + "br/";

application.setAttribute("words",(Object)t);

out.println(t);

}

}

catch(Exception e){

}

%

form method="post" action="index.jsp"

input name="message" type="text" size=50

input type="submit" value="發(fā)送消息"

/form

/body/html

輸出對話內(nèi)容如下：

Java網(wǎng)頁聊天如何實現(xiàn)，問題如下：

改成下面的樣子：

%@ page language="java" pageEncoding="GBK"%

html

head

titleMy JSP 'lab.jsp' starting page/title

/head

body

%

if(application.getAttribute("chat")!=null)

{ if(request.getParameter("mywords")!=null)

{ String mywords=request.getParameter("mywords");

mywords=(String)application.getAttribute("chat")+"br"+mywords;

application.setAttribute("chat",mywords);

out.print((String)application.getAttribute("chat"));

}

}else{

application.setAttribute("chat","");

}

%

form action="a1.jsf" method="post"

input type="text" size="30" name="mywords" value="我喜歡聊天"

input type="submit" name="sumbit" value="提交"

/form

/body

/html

1.要用post提交，否則中文亂碼

2.out.print((String)application.getAttribute("char")); 這句你寫錯了，應(yīng)該是chat不是char

3.你第一次運行的時候application.getAttribute("chat")肯定是空的，是空的話你又什么都不作，下次還是空的呀

本文名稱：java網(wǎng)頁聊天代碼,javaweb在線聊天系統(tǒng)
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