java免费聊天代码,java聊天系统完整代码

java 聊天室代码？？？

前天帮人解决过，代码如下：public class iChat extends JFrame {

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private JPanel jContentPane;

private JButton jButton1;

private JScrollPane jScrollPane1;

private JTextArea jTextArea1,jTextArea2; public iChat() {

super();

initialize();

} private void initialize() {

this.setSize(375, 364);

jTextArea1 = getJTextArea1();

this.setContentPane(getJContentPane());

this.setTitle("聊天室");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } private JPanel getJContentPane() {

if (jContentPane == null) {

jContentPane = new JPanel();

jContentPane.setBackground(Color.BLUE);//蓝色为JPanel 。

jContentPane.setLayout(null);

jContentPane.add(getJButton1(), null);

jContentPane.add(getJTextArea2(), null);

jContentPane.add(getJScrollPane1(), null);

}

return jContentPane;

} private JTextArea getJTextArea2() {

if (jTextArea2 == null) {

jTextArea2 = new JTextArea();

jTextArea2.setBounds(new Rectangle(1, 253, 282, 73));

jTextArea2.setLineWrap(true);

jTextArea2.addKeyListener(new java.awt.event.KeyAdapter() {

public void keyTyped(java.awt.event.KeyEvent e) {

if (e.getKeyChar() == KeyEvent.VK_ENTER) {

String s = "你说：" + jTextArea2.getText();

String date = new SimpleDateFormat(

"yyyy-MM-dd HH:mm:ss").format(Calendar

.getInstance().getTime());

jTextArea1.append(date + "\n");

jTextArea1.append(s);

}

}

});

}

return jTextArea2;

} private JButton getJButton1() {

if (jButton1 == null) {

jButton1 = new JButton();

jButton1.setBounds(new Rectangle(293, 288, 62, 32));

jButton1.setText("发送");

jButton1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

String s = "你说：" + jTextArea2.getText();

String date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")

.format(Calendar.getInstance().getTime());

jTextArea1.append(date + "\n");

jTextArea1.append(s + "\n");

jTextArea2.setText(""); }

});

}

return jButton1;

}

private JScrollPane getJScrollPane1() {

if (jScrollPane1 == null) {

jScrollPane1 = new JScrollPane();

jScrollPane1.setBounds(new Rectangle(0, 0, 360, 220));

jScrollPane1.setViewportView(getJTextArea1());

}

return jScrollPane1;

} private JTextArea getJTextArea1() {

if (jTextArea1 == null) {

jTextArea1 = new JTextArea();

jTextArea1.setEditable(false);

jTextArea1.setLineWrap(true);

}

return jTextArea1;

} public static void main(String[] args) {

SwingUtilities.invokeLater(new Runnable() {

public void run() {

iChat thisClass = new iChat();

thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

thisClass.setVisible(true);

}

});

}}

用JAVA 编写简单网络聊天程序

/**

* 基于UDP协议的聊天程序

*

* 2007.9.18

* */

//导入包

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

{

//广播地址或者对方的地址

public static final String sendIP = "172.18.8.255";

//发送端口9527

public static final int sendPort = 9527;

JPanel p = new JPanel();

List lst = new List(); //消息显示

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

JTextField txtMSG = new JTextField(20); //填写发送消息

JLabel lblIP = new JLabel("IP地址:");

JLabel lblMSG = new JLabel("消息:");

JButton btnSend = new JButton("发送");

byte [] buf;

//定义DatagramSocket的对象必须进行异常处理

//发送和接收数据报包的套接字

DatagramSocket ds = null;

//=============构造函数=====================

public Chat()

{

CreateInterFace();

//注册消息框监听器

txtMSG.addActionListener(this);

btnSend.addActionListener(this);

try

{

//端口:9527

ds =new DatagramSocket(sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

//============接受消息============

//匿名类

new Thread(new Runnable()

{

public void run()

{

byte buf[] = new byte[1024];

//表示接受数据报包

while(true)

{

try

{

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

ds.receive(dp);

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

}

catch(Exception e)

{

if(ds.isClosed())

{

e.printStackTrace();

}

}

}

}

}).start();

//关闭窗体事件

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();//关闭ds对象//关闭数据报套接字

}

}

});

}

//界面设计布局

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);

//背景颜色

lst.setBackground(Color.yellow);

//JAVA默认风格

this.setUndecorated(true);

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

this.setSize(600,500);

this.setTitle("〓聊天室〓");

this.setResizable(false);//不能改变窗体大小

this.setLocationRelativeTo(null);//窗体居中

this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

this.setVisible(true);

txtMSG.requestFocus();//消息框得到焦点

}

//===============================Main函数===============================

public static void main(String[]args)

{

new Chat();

}

//================================发送消息===============================

//消息框回车发送消息事件

public void actionPerformed(ActionEvent e)

{

//得到文本内容

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

//判断消息框是否为空

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

{

JOptionPane.showMessageDialog(null,"发送消息不能为空","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

//点发送按钮发送消息事件

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();

}

}

}

速求用JAVA语言写聊天室的源代码

【ClientSocketDemo.java 客户端Java源代码】

import java.net.*;

import java.io.*;

public class ClientSocketDemo

{

//声明客户端Socket对象socket

Socket socket = null;

//声明客户器端数据输入输出流

DataInputStream in;

DataOutputStream out;

//声明字符串数组对象response，用于存储从服务器接收到的信息

String response[];

//执行过程中，没有参数时的构造方法，本地服务器在本地，取默认端口10745

public ClientSocketDemo()

{

try

{

//创建客户端socket，服务器地址取本地，端口号为10745

socket = new Socket("localhost",10745);

//创建客户端数据输入输出流，用于对服务器端发送或接收数据

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

//获取客户端地址及端口号

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

//向服务器发送数据

out.writeUTF("Hello Server.This connection is from client.");

out.writeUTF(ip);

out.writeUTF(port);

//从服务器接收数据

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

//执行过程中，有一个参数时的构造方法，参数指定服务器地址，取默认端口10745

public ClientSocketDemo(String hostname)

{

try

{

//创建客户端socket，hostname参数指定服务器地址，端口号为10745

socket = new Socket(hostname,10745);

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

out.writeUTF("Hello Server.This connection is from client.");

out.writeUTF(ip);

out.writeUTF(port);

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

//执行过程中，有两个个参数时的构造方法，第一个参数hostname指定服务器地址

//第一个参数serverPort指定服务器端口号

public ClientSocketDemo(String hostname,String serverPort)

{

try

{

socket = new Socket(hostname,Integer.parseInt(serverPort));

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

out.writeUTF("Hello Server.This connection is from client.");

out.writeUTF(ip);

out.writeUTF(port);

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

public static void main(String[] args)

{

String comd[] = args;

if(comd.length == 0)

{

System.out.println("Use localhost(127.0.0.1) and default port");

ClientSocketDemo demo = new ClientSocketDemo();

}

else if(comd.length == 1)

{

System.out.println("Use default port");

ClientSocketDemo demo = new ClientSocketDemo(args[0]);

}

else if(comd.length == 2)

{

System.out.println("Hostname and port are named by user");

ClientSocketDemo demo = new ClientSocketDemo(args[0],args[1]);

}

else System.out.println("ERROR");

}

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

【ServerSocketDemo.java 服务器端Java源代码】

import java.net.*;

import java.io.*;

public class ServerSocketDemo

{

//声明ServerSocket类对象

ServerSocket serverSocket;

//声明并初始化服务器端监听端口号常量

public static final int PORT = 10745;

//声明服务器端数据输入输出流

DataInputStream in;

DataOutputStream out;

//声明InetAddress类对象ip，用于获取服务器地址及端口号等信息

InetAddress ip = null;

//声明字符串数组对象request，用于存储从客户端发送来的信息

String request[];

public ServerSocketDemo()

{

request = new String[3]; //初始化字符串数组

try

{

//获取本地服务器地址信息

ip = InetAddress.getLocalHost();

//以PORT为服务端口号，创建serverSocket对象以监听该端口上的连接

serverSocket = new ServerSocket(PORT);

//创建Socket类的对象socket，用于保存连接到服务器的客户端socket对象

Socket socket = serverSocket.accept();

System.out.println("This is server:"+String.valueOf(ip)+PORT);

//创建服务器端数据输入输出流，用于对客户端接收或发送数据

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

//接收客户端发送来的数据信息，并显示

request[0] = in.readUTF();

request[1] = in.readUTF();

request[2] = in.readUTF();

System.out.println("Received messages form client is:");

System.out.println(request[0]);

System.out.println(request[1]);

System.out.println(request[2]);

//向客户端发送数据

out.writeUTF("Hello client!");

out.writeUTF("Your ip is:"+request[1]);

out.writeUTF("Your port is:"+request[2]);

}

catch(IOException e){e.printStackTrace();}

}

public static void main(String[] args)

{

ServerSocketDemo demo = new ServerSocketDemo();

}

}

急求一个JAVA编写的局域网聊天代码？不要求很复杂。只要可以在两台机子上简单的对话就可以。

//以下引入包

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.net.*;

import java.applet.*;

public class regit extends JApplet implements ActionListener,ItemListener//接口

{

String s=null;

//对象的声明

JLabel labelname,labelpass,labelsxe,labeladdress,labelmail,labelphone;//标签

JTextField textname,textaddress,textmail,textphone;//文本框

JRadioButton r1,r2;//单选按纽

ButtonGroup bg;//组

JPasswordField textpass;//密码域

JButton buttonregit,buttonreset;//注册按纽 重写按纽

JPanel p;//面板

String sex;//定义性别字符串

URL url;//统一资源定位

BufferedWriter out1,out2;//流

BufferedReader in;

//布局方式

GridBagLayout gbl;

GridBagConstraints gc;

AppletContext co;//接口

//初始化

public void init()

{

//new 对象

labelname=new JLabel("用 户 名:");

labelpass=new JLabel("用户密码:");

labelsxe=new JLabel("性别:");

labeladdress=new JLabel("地址:");

labelmail=new JLabel("电子邮件:");

labelphone=new JLabel("联系电话:");

textname=new JTextField(15); textname.setForeground(Color.red);

textname.setToolTipText("请在这输入你的用户名");

textaddress=new JTextField(15);textaddress.setForeground(Color.red);

textaddress.setToolTipText("请在这输入你的地址");

textmail=new JTextField(15); textmail.setForeground(Color.red);

textmail.setToolTipText("请在这里输入你的E-mail地址");

textphone=new JTextField(15); textphone.setForeground(Color.red);

textphone.setToolTipText("请在这输入你的电话号码");

r1=new JRadioButton("男"); r1.setBackground(new Color(47,177,210));//设置颜色

r2=new JRadioButton("女"); r2.setBackground(new Color(47,177,210));//设置颜色

bg=new ButtonGroup();

bg.add(r1);bg.add(r2);//加入组,实现单选

textpass=new JPasswordField(15);

textpass.setToolTipText("在这里输入密码");

textpass.setForeground(Color.red);

buttonregit=new JButton("注册"); buttonregit.setBackground(new Color(47,177,210));//设置颜色

buttonregit.setToolTipText("点击按纽完成注册");

buttonreset=new JButton("填写"); buttonreset.setBackground(new Color(47,177,210));//设置颜色

buttonreset.setToolTipText("点击按纽刷新重写");

gbl=new GridBagLayout(); ///////////////////////////////////////

gc=new GridBagConstraints(); //////采用GridBagLayout布局方式////////

p=new JPanel();

p.setLayout(gbl);

p.setBackground(new Color(47,177,210));

this.getContentPane().add(p);//加入面板

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=2;

gbl.setConstraints(labelname,gc);

p.add(labelname);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=2;

gbl.setConstraints(textname,gc);

p.add(textname);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=4;

gbl.setConstraints(labelpass,gc);

p.add(labelpass);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=4;

gbl.setConstraints(textpass,gc);

p.add(textpass);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=6;

gbl.setConstraints(labelsxe,gc);

p.add(labelsxe);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=6;

gbl.setConstraints(r1,gc);

p.add(r1);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=5;

gc.gridy=6;

gbl.setConstraints(r2,gc);

p.add(r2);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=8;

gbl.setConstraints(labeladdress,gc);

p.add(labeladdress);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=8;

gbl.setConstraints(textaddress,gc);

p.add(textaddress);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=10;

gbl.setConstraints(labelmail,gc);

p.add(labelmail);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=10;

gbl.setConstraints(textmail,gc);

p.add(textmail);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=12;

gbl.setConstraints(labelphone,gc);

p.add(labelphone);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=12;

gbl.setConstraints(textphone,gc);

p.add(textphone);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=2;

gc.gridy=16;

gbl.setConstraints(buttonregit,gc);

p.add(buttonregit);

gc.anchor=GridBagConstraints.NORTHWEST;

gc.gridx=4;

gc.gridy=16;

gbl.setConstraints(buttonreset,gc);

p.add(buttonreset);

/////////////////////////////////////////////

co=this.getAppletContext();

/////////////////////////////////////////////

buttonregit.addActionListener(this);//按纽事件的监听

buttonreset.addActionListener(this);//按纽事件的监听

r1.addItemListener(this);//选择事件的监听

r2.addItemListener(this);//选择事件的监听

textphone.addActionListener(this);

}

public void actionPerformed(ActionEvent e)

{

//注册按纽事件

if(e.getSource()==buttonregit)

{

String s1=textname.getText(); ////////////////////

String s2=new String(textpass.getPassword());////////////////////

String s3=textaddress.getText(); // 定义字符串 //

String s4=textmail.getText(); ////////////////////

String s5=textphone.getText(); ////////////////////

//判断注册资料 信息 是否为空

if(s1.length()==0 || s2.length()==0 ||s3.length()==0 ||s4.length()==0 ||s5.length()==0)

{

int error=JOptionPane.INFORMATION_MESSAGE;

JOptionPane.showMessageDialog(null,"资料不能为空，请重新注册！","【温馨提示】",error);

return;//弹出对话框并返回

}

try//写入到txt文件

{

in=new BufferedReader(new FileReader("d:\\迷离视线聊天室\\password.txt"));

}

catch(Exception ee){}

String ss=s1;

try

{

while((s=in.readLine())!=null)

{

if(s.startsWith(ss))

{

JOptionPane.showMessageDialog(null,"用户名已经存在，请更换名字！");

textname.setText("");//设置为空，重新输入

textpass.setText("");

textaddress.setText("");

textmail.setText("");

textphone.setText("");

return;

}

}

}

catch(Exception ee){}

///////////////////////////以上代码判断是否有同名

{

try

{

out1=new BufferedWriter(new FileWriter("d:\\迷离视线聊天室\\password.txt",true));

out2=new BufferedWriter(new FileWriter("d:\\迷离视线聊天室\\message.txt",true));

}//创建文件

catch(Exception ee)

{}

try

{

out1.write(s1+"#"+s2);//写

out1.newLine();

out2.write("用户名："+s1);

out2.newLine();

out2.write("密码："+s2);

out2.newLine();

out2.write("性别："+sex);

out2.newLine();

out2.write("地址："+s3);

out2.newLine();

out2.write("电子邮件："+s4);

out2.newLine();

out2.write("电话："+s5);

out2.newLine();

out1.flush();

out2.flush();//清理缓冲

out1.close();

out2.close();

}

catch(Exception ee)

{}

JOptionPane.showMessageDialog(null,"注册成功！");

try

{

String qss="";

url=new url(/qss);//连接上网址

co.showDocument(url);

}

catch(Exception exx)

{}

}

}

//////////////////////以下为回车事件

if(e.getSource()==textphone)

{

String s1=textname.getText(); ////////////////////

String s2=new String(textpass.getPassword());////////////////////

String s3=textaddress.getText(); // 定义字符串 //

String s4=textmail.getText(); ////////////////////

String s5=textphone.getText(); ////////////////////

//判断注册资料 信息 是否为空

if(s1.length()==0 || s2.length()==0 ||s3.length()==0 ||s4.length()==0 ||s5.length()==0)

{

int error=JOptionPane.INFORMATION_MESSAGE;

JOptionPane.showMessageDialog(null,"资料不能为空，请重新注册！","【温馨提示】",error);

return;//弹出对话框并返回

}

try//写入到txt文件

{

in=new BufferedReader(new FileReader("d:\\迷离视线聊天室\\password.txt"));

}

catch(Exception ee){}

String ss=s1;

try

{

while((s=in.readLine())!=null)

{

if(s.startsWith(ss))

{

JOptionPane.showMessageDialog(null,"用户名已经存在，请更换名字！");

textname.setText("");//设置为空，重新输入

textpass.setText("");

textaddress.setText("");

textmail.setText("");

textphone.setText("");

return;

}

}

}

catch(Exception ee){}

///////////////////////////以上代码判断是否有同名

{

try

{

out1=new BufferedWriter(new FileWriter("d:\\迷离视线聊天室\\password.txt",true));

out2=new BufferedWriter(new FileWriter("d:\\迷离视线聊天室\\message.txt",true));

}//创建文件

catch(Exception ee)

{}

try

{

out1.write(s1+"#"+s2);//写

out1.newLine();

out2.write("用户名："+s1+"密码："+s2+"性别："+sex+"地址："+s3+"电子邮件："+s4+"电话："+s5);//写

out2.newLine();

out1.flush();

out2.flush();//清理缓冲

out1.close();

out2.close();

}

catch(Exception ee)

{}

JOptionPane.showMessageDialog(null,"注册成功！");

try

{

String qss="";

url=new url(/qss);//连接上网址

co.showDocument(url);

}

catch(Exception exx)

{}

}

}

if(e.getSource()==buttonreset)//刷新重写事件

{

textname.setText("");

textpass.setText("");

textaddress.setText("");

textmail.setText("");

textphone.setText("");

}

}

//////////////////////////////////////////

//

public void itemStateChanged(ItemEvent ex)

{

if(ex.getSource()==r1)

{

sex=new String("男");

}

else if(ex.getSource()==r2)

{

sex=new String("女");

}

}

}

参考资料：试试看,刚在网上找的

要JAVA聊天程序代码，急用

import java.io.InputStream;

import java.io.DataInputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.DataOutputStream;

import java.io.BufferedReader;

import java.net.ServerSocket;

import java.net.Socket;

import java.io.IOException;

import java.util.Date;

class Server

{

public Server()

{

try

{

ServerSocket s=new ServerSocket(8888);

Socket ss=s.accept();

OutputStream out=ss.getOutputStream();

DataOutputStream dout=new DataOutputStream(out);

InputStream in=ss.getInputStream();

DataInputStream din=new DataInputStream(in);

System.out.print(din.readUTF()+"!");

dout.writeUTF("你已经连接到服务器"+"\t"+"你的地址："+ss.getInetAddress()+"\t"

+"你的链接端口："+ss.getLocalPort()+"\n");

new ReadMessage(din).start();

new SendMessage(dout).start();

}

catch (IOException e)

{

e.printStackTrace();

}

}

public static void main(String[] args)

{

new Server();

}

}

//接受客户端信息

class ReadMessage extends Thread

{

private DataInputStream din;

public ReadMessage(DataInputStream din)

{

this.din=din;

}

public void run()

{

String str;

try

{

while (true)

{

str=din.readUTF();

System.out.println(new Date().toLocaleString()+"客户端说："+str);

if (str.equals("bye"))

{

System.out.println("客户端下线！");

break;

}

}

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

// 发出服务器信息

class SendMessage extends Thread

{

private DataOutputStream dout;

public SendMessage(DataOutputStream dout)

{

this.dout=dout;

}

public void run()

{

InputStreamReader inr=new InputStreamReader(System.in);

BufferedReader buf=new BufferedReader(inr);

String str;

try

{

while(true)

{

str=buf.readLine();

dout.writeUTF(str);

if (str.equals("bye"))

{

System.out.println("服务器退出！");

System.exit(1);

}

}

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

import java.io.InputStream;

import java.io.DataInputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.DataOutputStream;

import java.io.BufferedReader;

import java.net.Socket;

import java.io.IOException;

import java.util.Date;

class Client

{

public Client()

{

try

{

Socket s=new Socket("192.168.1.2",8888);

InputStream in=s.getInputStream();

DataInputStream din=new DataInputStream(in);

OutputStream out=s.getOutputStream();

DataOutputStream dout=new DataOutputStream(out);

dout.writeUTF("服务器你好！我是客户端");

System.out.println(din.readUTF());

new Thread(new SenderMessage(dout)).start();

new Thread(new ReaderMessage(din)).start();

}

catch (IOException e)

{

e.printStackTrace();

}

}

public static void main(String[] args)

{

new Client();

}

}

class ReaderMessage implements Runnable

{

private DataInputStream din;

public ReaderMessage(DataInputStream din)

{

this.din=din;

}

public void run()

{

String str;

try

{

while(true)

{

str=din.readUTF();

System.out.println(new Date().toLocaleString()+"服务器说："+str);

if (str.equals("bye"))

{

System.out.println("服务器已经关闭，此程序自动退出！");

break;

}

}

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

class SenderMessage implements Runnable

{

private DataOutputStream dout;

public SenderMessage(DataOutputStream dout)

{

this.dout=dout;

}

public void run()

{

String str;

InputStreamReader inf=new InputStreamReader(System.in);

BufferedReader buf=new BufferedReader(inf);

try

{

while (true)

{

str=buf.readLine();

dout.writeUTF(str);

if (str.equals("bye"))

{

System.out.println("客户端自己退出！");

System.exit(1);

}

}

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

求java网络聊天室（B/S模式)程序代码

共四个java文件，源代码如下：

import java.awt.*;

import java.net.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class ChatArea extends Panel implements ActionListener,Runnable

{

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

Thread threadMessage=null;

TextArea 谈话显示区,私聊显示区=null;

TextField 送出信息=null;

Button 确定,刷新谈话区,刷新私聊区;

Label 提示条=null;

String name=null;

Hashtable listTable;

List listComponent=null;

Choice privateChatList;

int width,height;

public ChatArea(String name,Hashtable listTable,int width,int height)

{

setLayout(null);

setBackground(Color.orange);

this.width=width;

this.height=height;

setSize(width,height);

this.listTable=listTable;

this.name=name;

threadMessage=new Thread(this);

谈话显示区=new TextArea(10,10);

私聊显示区=new TextArea(10,10);

确定=new Button("送出信息到:");

刷新谈话区=new Button("刷新谈话区");

刷新私聊区=new Button("刷新私聊区");

提示条=new Label("双击聊天者可私聊",Label.CENTER);

送出信息=new TextField(28);

确定.addActionListener(this);

送出信息.addActionListener(this);

刷新谈话区.addActionListener(this);

刷新私聊区.addActionListener(this);

listComponent=new List();

listComponent.addActionListener(this);

privateChatList=new Choice();

privateChatList.add("大家(*)");

privateChatList.select(0);

add(谈话显示区);

谈话显示区.setBounds(10,10,(width-120)/2,(height-120));

add(私聊显示区);

私聊显示区.setBounds(10+(width-120)/2,10,(width-120)/2,(height-120));

add(listComponent);

listComponent.setBounds(10+(width-120),10,100,(height-160));

add(提示条);

提示条.setBounds(10+(width-120),10+(height-160),110,40);

Panel pSouth=new Panel();

pSouth.add(送出信息);

pSouth.add(确定);

pSouth.add(privateChatList);

pSouth.add(刷新谈话区);

pSouth.add(刷新私聊区);

add(pSouth);

pSouth.setBounds(10,20+(height-120),width-20,60);

}

public void setName(String s)

{

name=s;

}

public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)

{

this.socket=socket;

this.in=in;

this.out=out;

try

{

threadMessage.start();

}

catch(Exception e)

{

}

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==确定||e.getSource()==送出信息)

{

String message="";

String people=privateChatList.getSelectedItem();

people=people.substring(0,people.indexOf("("));

message=送出信息.getText();

if(message.length()0)

{

try {

if(people.equals("大家"))

{

out.writeUTF("公共聊天内容:"+name+"说:"+message);

}

else

{

out.writeUTF("私人聊天内容:"+name+"悄悄地说:"+message+"#"+people);

}

}

catch(IOException event)

{

}

}

}

else if(e.getSource()==listComponent)

{

privateChatList.insert(listComponent.getSelectedItem(),0);

privateChatList.repaint();

}

else if(e.getSource()==刷新谈话区)

{

谈话显示区.setText(null);

}

else if(e.getSource()==刷新私聊区)

{

私聊显示区.setText(null);

}

}

public void run()

{

while(true)

{

String s=null;

try

{

s=in.readUTF();

if(s.startsWith("聊天内容:"))

{

String content=s.substring(s.indexOf(":")+1);

谈话显示区.append("\n"+content);

}

if(s.startsWith("私人聊天内容:"))

{

String content=s.substring(s.indexOf(":")+1);

私聊显示区.append("\n"+content);

}

else if(s.startsWith("聊天者:"))

{

String people=s.substring(s.indexOf(":")+1,s.indexOf("性别"));

String sex=s.substring(s.indexOf("性别")+2);

listTable.put(people,people+"("+sex+")");

listComponent.add((String)listTable.get(people));

listComponent.repaint();

}

else if(s.startsWith("用户离线:"))

{

String awayPeopleName=s.substring(s.indexOf(":")+1);

listComponent.remove((String)listTable.get(awayPeopleName));

listComponent.repaint();

谈话显示区.append("\n"+(String)listTable.get(awayPeopleName)+"离线");

listTable.remove(awayPeopleName);

}

Thread.sleep(5);

}

catch(IOException e)

{

listComponent.removeAll();

listComponent.repaint();

listTable.clear();

谈话显示区.setText("和服务器的连接已中断\n必须刷新浏览器才能再次聊天");

break;

}

catch(InterruptedException e)

{

}

}

}

}

ChatServer.java

import java.io.*;

import java.net.*;

import java.util.*;

public class ChatServer

{

public static void main(String args[])

{

ServerSocket server=null;

Socket you=null;

Hashtable peopleList;

peopleList=new Hashtable();

while(true)

{

try

{

server=new ServerSocket(6666);

}

catch(IOException e1)

{

System.out.println("正在监听");

}

try {

you=server.accept();

InetAddress address=you.getInetAddress();

System.out.println("用户的IP:"+address);

}

catch (IOException e)

{

}

if(you!=null)

{

Server_thread peopleThread=new Server_thread(you,peopleList);

peopleThread.start();

}

else {

continue;

}

}

}

}

class Server_thread extends Thread

{

String name=null,sex=null;

Socket socket=null;

File file=null;

DataOutputStream out=null;

DataInputStream in=null;

Hashtable peopleList=null;

Server_thread(Socket t,Hashtable list)

{

peopleList=list;

socket=t;

try {

in=new DataInputStream(socket.getInputStream());

out=new DataOutputStream(socket.getOutputStream());

}

catch (IOException e)

{

}

}

public void run()

{

while(true)

{ String s=null;

try

{

s=in.readUTF();

if(s.startsWith("姓名:"))

{

name=s.substring(s.indexOf(":")+1,s.indexOf("性别"));

sex=s.substring(s.lastIndexOf(":")+1);

boolean boo=peopleList.containsKey(name);

if(boo==false)

{

peopleList.put(name,this);

out.writeUTF("可以聊天:");

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

Server_thread th=(Server_thread)enum.nextElement();

th.out.writeUTF("聊天者:"+name+"性别"+sex);

if(th!=this)

{

out.writeUTF("聊天者:"+th.name+"性别"+th.sex);

}

}

}

else

{

out.writeUTF("不可以聊天:");

}

}

else if(s.startsWith("公共聊天内容:"))

{

String message=s.substring(s.indexOf(":")+1);

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

((Server_thread)enum.nextElement()).out.writeUTF("聊天内容:"+message);

}

}

else if(s.startsWith("用户离开:"))

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

Server_thread th=(Server_thread)enum.nextElement();

if(th!=thisth.isAlive())

{

th.out.writeUTF("用户离线:"+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

socket.close();

System.out.println(name+"用户离开了");

break;

}

else if(s.startsWith("私人聊天内容:"))

{

String 悄悄话=s.substring(s.indexOf(":")+1,s.indexOf("#"));

String toPeople=s.substring(s.indexOf("#")+1);

Server_thread toThread=(Server_thread)peopleList.get(toPeople);

if(toThread!=null)

{

toThread.out.writeUTF("私人聊天内容:"+悄悄话);

}

else

{

out.writeUTF("私人聊天内容:"+toPeople+"已经离线");

}

}

}

catch(IOException ee)

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

Server_thread th=(Server_thread)enum.nextElement();

if(th!=thisth.isAlive())

{

th.out.writeUTF("用户离线:"+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

try

{

socket.close();

}

catch(IOException eee)

{

}

System.out.println(name+"用户离开了");

break;

}

}

}

}

import java.awt.*;

import java.io.*;

import java.net.*;

import java.applet.*;

import java.util.Hashtable;

ClientChat.java

public class ClientChat extends Applet implements Runnable

{

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

InputNameTextField 用户提交昵称界面=null;

ChatArea 用户聊天界面=null;

Hashtable listTable;

Label 提示条;

Panel north, center;

Thread thread;

public void init()

{

int width=getSize().width;

int height=getSize().height;

listTable=new Hashtable();

setLayout(new BorderLayout());

用户提交昵称界面=new InputNameTextField(listTable);

int h=用户提交昵称界面.getSize().height;

用户聊天界面=new ChatArea("",listTable,width,height-(h+5));

用户聊天界面.setVisible(false);

提示条=new Label("正在连接到服务器,请稍等...",Label.CENTER);

提示条.setForeground(Color.red);

north=new Panel(new FlowLayout(FlowLayout.LEFT));

center=new Panel();

north.add(用户提交昵称界面);

north.add(提示条);

center.add(用户聊天界面);

add(north,BorderLayout.NORTH);

add(center,BorderLayout.CENTER);

validate();

}

public void start()

{

if(socket!=nullin!=nullout!=null)

{ try

{

socket.close();

in.close();

out.close();

用户聊天界面.setVisible(false);

}

catch(Exception ee)

{

}

}

try

{

socket = new Socket(this.getCodeBase().getHost(), 6666);

in=new DataInputStream(socket.getInputStream());

out=new DataOutputStream(socket.getOutputStream());

}

catch (IOException ee)

{

提示条.setText("连接失败");

}

if(socket!=null)

{

InetAddress address=socket.getInetAddress();

提示条.setText("连接:"+address+"成功");

用户提交昵称界面.setSocketConnection(socket,in,out);

north.validate();

}

if(thread==null)

{

thread=new Thread(this);

thread.start();

}

}

public void stop()

{

try

{

socket.close();

thread=null;

}

catch(IOException e)

{

this.showStatus(e.toString());

}

}

public void run()

{

while(thread!=null)

{

if(用户提交昵称界面.get能否聊天()==true)

{

用户聊天界面.setVisible(true);

用户聊天界面.setName(用户提交昵称界面.getName());

用户聊天界面.setSocketConnection(socket,in,out);

提示条.setText("祝聊天愉快!");

center.validate();

break;

}

try

{

Thread.sleep(100);

}

catch(Exception e)

{

}

}

}

}

InputNameTextField。java

import java.awt.*;

import java.net.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class InputNameTextField extends Panel implements ActionListener,Runnable

{

TextField nameFile=null;

String name=null;

Checkbox male=null,female=null;

CheckboxGroup group=null;

Button 进入聊天室=null,退出聊天室=null;

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

Thread thread=null;

boolean 能否聊天=false;

Hashtable listTable;

public InputNameTextField(Hashtable listTable)

{

this.listTable=listTable;

nameFile=new TextField(10);

group=new CheckboxGroup();

male=new Checkbox("男",true,group);

female=new Checkbox("女",false,group);

进入聊天室=new Button("进入");

退出聊天室=new Button("退出");

进入聊天室.addActionListener(this);

退出聊天室.addActionListener(this);

thread=new Thread(this);

add(new Label("昵称:"));

add(nameFile);

add(male);

add(female);

add(进入聊天室);

add(退出聊天室);

退出聊天室.setEnabled(false);

}

public void set能否聊天(boolean b)

{

能否聊天=b;

}

public boolean get能否聊天()

{

return 能否聊天;

}

public String getName()

{

return name;

}

public void setName(String s)

{

name=s;

}

public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)

{

this.socket=socket;

this.in=in;

this.out=out;

try{

thread.start();

}

catch(Exception e)

{

nameFile.setText(""+e);

}

}

public Socket getSocket()

{

return socket;

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==进入聊天室)

{

退出聊天室.setEnabled(true);

if(能否聊天==true)

{

nameFile.setText("您正在聊天:"+name);

}

else

{

this.setName(nameFile.getText());

String sex=group.getSelectedCheckbox().getLabel();

if(socket!=nullname!=null)

{

try{

out.writeUTF("姓名:"+name+"性别:"+sex);

}

catch(IOException ee)

{

nameFile.setText("没有连通服务器"+ee);

}

}

}

}

if(e.getSource()==退出聊天室)

{

try

{

out.writeUTF("用户离开:");

}

catch(IOException ee)

{

}

}

}

public void run()

{

String message=null;

while(true)

{

if(in!=null)

{

try

{

message=in.readUTF();

}

catch(IOException e)

{

nameFile.setText("和服务器断开"+e);

}

}

if(message.startsWith("可以聊天:"))

{

能否聊天=true;

break;

}

else if(message.startsWith("聊天者:"))

{

String people=message.substring(message.indexOf(":")+1);

listTable.put(people,people);

}

else if(message.startsWith("不可以聊天:"))

{

能否聊天=false;

nameFile.setText("该昵称已被占用");

}

}

}

}