要JAVA聊天程序代码，急用

import java.io.InputStream;

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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();

}

}

}

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();

}

}

}

大家有没有基于一对一聊天的最简单的java聊天代码

先运行服务端 再运行客户端   就能对话了

服务端

package Liaotian;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java点虐 .ServerSocket;

import java点虐 .Socket;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

public class fwjiemian extends Frame implements ActionListener{

JTextArea lt;

TextField sr;

Button fs;

Panel xia;

ServerSocket ss;

Socket s;

BufferedReader br;

PrintWriter pw;

BufferedReader in;

public fwjiemian(){

lt=new JTextArea();

lt.setLineWrap(true);

sr=new TextField();

fs=new Button("发送");

xia=new Panel(new GridLayout(1,2)); 

xia.add(sr);

xia.add(fs);

this.add(lt);

this.add(xia,BorderLayout.SOUTH);

this.setResizable(false);

this.setSize(400, 500);

this.setLocation(350, 100);

this.setTitle("服务器");

this.setVisible(true);

fs.addActionListener(this);

//创建客户端+接受消息

try {

lt.setFont(new   java.awt.Font("宋体",0,15));   

ss=new ServerSocket(8888);

lt.append("服务器已启动，等待客户端接入..."+"\n"+"\n");

s=ss.accept();

lt.append("客户端已接入..."+"\n"+"\n");

while(true){

//获取时间

SimpleDateFormat sm=new SimpleDateFormat("HH:mm:ss");

System.out.println(sm.format(new Date()));

//接受消息

br=new BufferedReader(new InputStreamReader(s.getInputStream()));

String info=br.readLine();

lt.append("☆ 客户端："+info+"    "+sm.format(new Date())+"\n"+"\n");

}

} catch (Exception e) {

e.printStackTrace();

}

}

public static void main(String[] args) {

new fwjiemian();

}

@Override

public void actionPerformed(ActionEvent e) {

if(e.getSource()==fs){

try {

//获取时间

SimpleDateFormat sm=new SimpleDateFormat("HH:mm:ss");

System.out.println(sm.format(new Date()));

//发送消息

String infotokehu=sr.getText();

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

pw.println(infotokehu);

lt.setFont(new   java.awt.Font("宋体",0,15));   

lt.append("★ 服务器："+infotokehu+"    "+sm.format(new Date())+"\n"+"\n");

sr.setText("");

} catch (IOException e1) {

e1.printStackTrace();

}

}

}

}

客户端

package Liaotian;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java点虐 .ServerSocket;

import java点虐 .Socket;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

public class khjiemian extends Frame implements ActionListener{

JTextArea lt;

TextField sr;

Button fs;

Panel xia;

Socket s;

PrintWriter pw;

BufferedReader br;

BufferedReader in;

public khjiemian(){

lt=new JTextArea();

lt.setLineWrap(true); 

sr=new TextField();

fs=new Button("发送");

xia=new Panel(new GridLayout(1,2)); 

xia.add(sr);

xia.add(fs);

this.add(lt);

this.add(xia,BorderLayout.SOUTH);

this.setResizable(false);

this.setSize(400, 500);

this.setLocation(800, 100);

this.setTitle("服务器");

this.setVisible(true);

fs.addActionListener(this);

//创建客户端+接受消息

try {

lt.setFont(new   java.awt.Font("宋体",0,15));   

s=new Socket("127.0.0.1",8888);

lt.append("客户端已启动，等待接入服务器..."+"\n"+"\n");

lt.append("已接入服务器..."+"\n"+"\n");

while(true){

//获取时间

SimpleDateFormat sm=new SimpleDateFormat("HH:mm:ss");

System.out.println(sm.format(new Date()));

//接受消息

br=new BufferedReader(new InputStreamReader(s.getInputStream()));

String info=br.readLine();

lt.append("★ 服务器："+info+"    "+sm.format(new Date())+"\n"+"\n");

}

} catch (Exception e) {

e.printStackTrace();

} 

}

public static void main(String[] args) {

new khjiemian();

}

public void actionPerformed(ActionEvent w) {

if(w.getSource()==fs){

try {

//获取时间

SimpleDateFormat sm=new SimpleDateFormat("HH:mm:ss");

System.out.println(sm.format(new Date()));

//发消息

String infotofuwu=sr.getText();

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

pw.println(infotofuwu);

lt.setFont(new   java.awt.Font("宋体",0,15));   

lt.append("☆ 客户端："+infotofuwu+"    "+sm.format(new Date())+"\n"+"\n");

sr.setText("");

}

 catch (Exception e) {

e.printStackTrace();

} 

}

}

}

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