java网络聊天代码 java实现网络聊天

要JAVA聊天程序代码，急用

import java.io.InputStream;

让客户满意是我们工作的目标，不断超越客户的期望值来自于我们对这个行业的热爱。我们立志把好的技术通过有效、简单的方式提供给客户，将通过不懈努力成为客户在信息化领域值得信任、有价值的长期合作伙伴，公司提供的服务项目有：域名申请、网络空间、营销软件、网站建设、江门网站维护、网站推广。

import java.io.DataInputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.DataOutputStream;

import java.io.BufferedReader;

import java点虐 .ServerSocket;

import java点虐 .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点虐 .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();

}

}

}

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点虐 .*;

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

java多人聊天一般都是怎么搭建的？

Java多人聊天可以使用Java的Socket编程实现，主要的思路是：使用服务器来维护所有客户端的连接，并将客户端之间的聊天信息进行转发。

具体的实现步骤如下：

创建服务器端：使用ServerSocket类创建一个服务器端，并监听指定的端口，等待客户端的连接。

创建客户端：使用Socket类创建一个客户端，并连接到服务器端。

实现聊天功能：客户端和服务器端之间可以通过输入和输出流进行通信，客户端将聊天信息发送给服务器，服务器再将其转发给其他客户端。

处理异常：在实现聊天功能时，需要注意处理可能出现的异常，例如连接异常、输入输出异常等等。

一个简单的Java多人聊天程序的代码框架如下：

服务器端：

import java.io.IOException;

import java点虐 .ServerSocket;

import java点虐 .Socket;

import java.util.ArrayList;

public class ChatServer {

private ServerSocket serverSocket;

private ArrayListClientHandler clients;

public ChatServer(int port) throws IOException {

serverSocket = new ServerSocket(port);

clients = new ArrayListClientHandler();

System.out.println("服务器已启动，等待客户端连接...");

}

public void start() throws IOException {

while (true) {

Socket socket = serverSocket.accept();

ClientHandler client = new ClientHandler(socket, this);

clients.add(client);

client.start();

}

}

public void broadcast(String message) {

for (ClientHandler client : clients) {

client.sendMessage(message);

}

}

public void removeClient(ClientHandler client) {

clients.remove(client);

}

public static void main(String[] args) throws IOException {

ChatServer server = new ChatServer(12345);

server.start();

}

}

客户端：

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java点虐 .Socket;

public class ChatClient {

private Socket socket;

private BufferedReader reader;

private PrintWriter writer;

private String name;

public ChatClient(String serverAddress, int port, String name) throws IOException {

socket = new Socket(serverAddress, port);

reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));

writer = new PrintWriter(socket.getOutputStream(), true);

this.name = name;

}

public void start() throws IOException {

System.out.println("欢迎来到聊天室！");

new Thread(new IncomingMessageHandler()).start();

new Thread(new OutgoingMessageHandler()).start();

}

private class IncomingMessageHandler implements Runnable {

@Override

public void run() {

try {

while (true) {

String message = reader.readLine();

if (message == null) {

break;

}

System.out.println(message);

}

} catch (IOException e) {

e.printStackTrace();

} finally {

close();

}

}

}

private class OutgoingMessageHandler implements Runnable {

@Override

public void run() {

BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

try {

while (true) {

String message = reader.readLine();

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

break;

}

writer.println(name + ": " + message);

}

} catch (IOException e) {

e.printStackTrace；

} finally {

close();

}

}

}