用java語言實(shí)行一個(gè)UDP聊天室 多客戶 無圖形用戶界面

這是很久以前在網(wǎng)上找的，略作修改的一個(gè)小案例UDP聊天的，供你參考，改改里面的ip地址。

成都創(chuàng)新互聯(lián)自2013年創(chuàng)立以來，先為青縣等服務(wù)建站，青縣等地企業(yè)，進(jìn)行企業(yè)商務(wù)咨詢服務(wù)。為青縣企業(yè)網(wǎng)站制作PC+手機(jī)+微官網(wǎng)三網(wǎng)同步一站式服務(wù)解決您的所有建站問題。

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetSocketAddress;

public class UDPClient {

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

new UDPClient().go();

}

private void go() {

ClientSendThread send = new ClientSendThread();

new Thread(send).start();

ClientRecvThread recv = new ClientRecvThread();

new Thread(recv).start();

}

class ClientSendThread implements Runnable {

@Override

public void run() {

try {

DatagramSocket ds = new DatagramSocket();

String str = "";

byte[] buf = null;

while (true) {

System.out.println("請(qǐng)輸入");

BufferedReader br = new BufferedReader(

new InputStreamReader(System.in));

str = br.readLine();

if ("bye".equals(str))

break;

buf = str.getBytes();

// System.out.println("-----buf.length-------" + buf.length);

DatagramPacket dp = new DatagramPacket(buf, buf.length,

new InetSocketAddress("127.0.0.1", 5678));

ds.send(dp);

buf = null;

}

ds.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

class ClientRecvThread implements Runnable {

@Override

public void run() {

byte[] buf = new byte[1024];

//接收端的端口需要指定，不然發(fā)送端不知道向哪個(gè)端口發(fā)送數(shù)據(jù)包

DatagramSocket ds;

try {

ds = new DatagramSocket(5679);

String message = "";

DatagramPacket dp = null;

while(true){

dp = new DatagramPacket(buf, buf.length);

ds.receive(dp);

message = new String(buf,0,dp.getLength());

System.out.println("接收到Server端信息為："+message);

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetSocketAddress;

public class UDPServer {

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

new UDPServer().go();

}

private void go() {

//服務(wù)端啟動(dòng)2個(gè)線程，1個(gè)發(fā)送，1個(gè)接收

ServerSendThread send = new ServerSendThread();

new Thread(send).start();

ServerRecvThread recv = new ServerRecvThread();

new Thread(recv).start();

}

// 服務(wù)端發(fā)送線程

class ServerSendThread implements Runnable{

@Override

public void run() {

try {

DatagramSocket ds = new DatagramSocket();

String str = "";

byte[] buf = null;

while (true) {

System.out.println("請(qǐng)輸入");

BufferedReader br = new BufferedReader(

new InputStreamReader(System.in));

str = br.readLine();

if ("bye".equals(str))

break;

buf = str.getBytes();

DatagramPacket dp = new DatagramPacket(buf, buf.length,

new InetSocketAddress("192.163.20.61", 5679));

ds.send(dp);

buf = null;

}

ds.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

// 服務(wù)端接收線程

class ServerRecvThread implements Runnable{

@Override

public void run() {

byte[] buf = new byte[1024];

//接收端的端口需要指定，不然發(fā)送端不知道向哪個(gè)端口發(fā)送數(shù)據(jù)包

DatagramSocket ds;

try {

ds = new DatagramSocket(5678);

String message = "";

while(true){

DatagramPacket dp = new DatagramPacket(buf, buf.length);

ds.receive(dp);

message = new String(buf,0,dp.getLength());

System.out.println("接收到Client端的信息為："+message);

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

如何用java做一個(gè)聊天小程序 要求使用圖形用戶界面,可以實(shí)現(xiàn)一個(gè)聊天室中多人聊天,也可以兩人私聊,

給你一個(gè)簡單的實(shí)現(xiàn)吧，注意一定要先運(yùn)行MyServer.java

//MyCilent.java

import java.io.*;

import java.net.*;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class MyClient extends JFrame implements ActionListener{

JTextField tf;

JTextArea tx;

JButton bt;

PrintWriter out;

public MyClient(){

tf=new JTextField(20);

tx=new JTextArea();

tx.setLineWrap(true);

tx.setWrapStyleWord(true);

JPanel pan=new JPanel();

JScrollPane jsp=new JScrollPane(tx);

add(jsp,"Center");

bt=new JButton("SEND");

bt.addActionListener(this);

pan.add(tf);

pan.add(bt);

add(pan,"South");

this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);

}

});

setTitle("THE CLIENT");

setSize(400,300);

setVisible(true);

try{

Socket socket=new Socket("127.0.0.1",1680);

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

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

BufferedReader sin=new BufferedReader(in);

String s;

while(true){

s=sin.readLine();

tx.append("#Server Said#: "+s+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

public void actionPerformed(ActionEvent e){

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

tx.append("@Client Said@: "+tf.getText()+"\n");

out.println(tf.getText());

tf.setText("");

}

}

public static void main(String[] args){

MyClient mct = new MyClient();

}

}

//MyServer.java

import java.io.*;

import java.net.*;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class MyServer extends JFrame implements ActionListener{

JTextField tf;

JTextArea tx;

JButton bt;

JScrollPane jsp;

JPanel pan;

PrintWriter out;

public MyServer(){

tx=new JTextArea();

tx.setLineWrap(true);

tx.setWrapStyleWord(true);

jsp=new JScrollPane(tx);

tf=new JTextField(20);

bt=new JButton("SEND");

bt.addActionListener(this);

pan=new JPanel();

pan.add(tf);

pan.add(bt);

add(pan,"South");

add(jsp,"Center");

this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);

}

});

setTitle("THE SERVER");

setSize(400,300);

setVisible(true);

try{

ServerSocket server = new ServerSocket(1680);

Socket socket = server.accept();

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

BufferedReader sin=new BufferedReader(in);

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

while(true){

String s=sin.readLine();

tx.append("@Client Said@: "+s+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

public void actionPerformed(ActionEvent e){

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

String st = tf.getText();

tx.append("#Server Said#: "+st+"\n");

out.println(st);

tf.setText("");

}

}

public static void main(String[] args){

MyServer msr = new MyServer();

}

}

求java網(wǎng)絡(luò)聊天室（B/S模式)程序代碼

共四個(gè)java文件，源代碼如下：

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 談話顯示區(qū),私聊顯示區(qū)=null;

TextField 送出信息=null;

Button 確定,刷新談話區(qū),刷新私聊區(qū);

Label 提示條=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);

談話顯示區(qū)=new TextArea(10,10);

私聊顯示區(qū)=new TextArea(10,10);

確定=new Button("送出信息到:");

刷新談話區(qū)=new Button("刷新談話區(qū)");

刷新私聊區(qū)=new Button("刷新私聊區(qū)");

提示條=new Label("雙擊聊天者可私聊",Label.CENTER);

送出信息=new TextField(28);

確定.addActionListener(this);

送出信息.addActionListener(this);

刷新談話區(qū).addActionListener(this);

刷新私聊區(qū).addActionListener(this);

listComponent=new List();

listComponent.addActionListener(this);

privateChatList=new Choice();

privateChatList.add("大家(*)");

privateChatList.select(0);

add(談話顯示區(qū));

談話顯示區(qū).setBounds(10,10,(width-120)/2,(height-120));

add(私聊顯示區(qū));

私聊顯示區(qū).setBounds(10+(width-120)/2,10,(width-120)/2,(height-120));

add(listComponent);

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

add(提示條);

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

Panel pSouth=new Panel();

pSouth.add(送出信息);

pSouth.add(確定);

pSouth.add(privateChatList);

pSouth.add(刷新談話區(qū));

pSouth.add(刷新私聊區(qū));

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()==確定||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("公共聊天內(nèi)容:"+name+"說:"+message);

}

else

{

out.writeUTF("私人聊天內(nèi)容:"+name+"悄悄地說:"+message+"#"+people);

}

}

catch(IOException event)

{

}

}

}

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

{

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

privateChatList.repaint();

}

else if(e.getSource()==刷新談話區(qū))

{

談話顯示區(qū).setText(null);

}

else if(e.getSource()==刷新私聊區(qū))

{

私聊顯示區(qū).setText(null);

}

}

public void run()

{

while(true)

{

String s=null;

try

{

s=in.readUTF();

if(s.startsWith("聊天內(nèi)容:"))

{

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

談話顯示區(qū).append("\n"+content);

}

if(s.startsWith("私人聊天內(nèi)容:"))

{

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

私聊顯示區(qū).append("\n"+content);

}

else if(s.startsWith("聊天者:"))

{

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

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

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

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

listComponent.repaint();

}

else if(s.startsWith("用戶離線:"))

{

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

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

listComponent.repaint();

談話顯示區(qū).append("\n"+(String)listTable.get(awayPeopleName)+"離線");

listTable.remove(awayPeopleName);

}

Thread.sleep(5);

}

catch(IOException e)

{

listComponent.removeAll();

listComponent.repaint();

listTable.clear();

談話顯示區(qū).setText("和服務(wù)器的連接已中斷\n必須刷新瀏覽器才能再次聊天");

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("正在監(jiān)聽");

}

try {

you=server.accept();

InetAddress address=you.getInetAddress();

System.out.println("用戶的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("性別"));

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+"性別"+sex);

if(th!=this)

{

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

}

}

}

else

{

out.writeUTF("不可以聊天:");

}

}

else if(s.startsWith("公共聊天內(nèi)容:"))

{

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

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

((Server_thread)enum.nextElement()).out.writeUTF("聊天內(nèi)容:"+message);

}

}

else if(s.startsWith("用戶離開:"))

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

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

if(th!=thisth.isAlive())

{

th.out.writeUTF("用戶離線:"+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

socket.close();

System.out.println(name+"用戶離開了");

break;

}

else if(s.startsWith("私人聊天內(nèi)容:"))

{

String 悄悄話=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("私人聊天內(nèi)容:"+悄悄話);

}

else

{

out.writeUTF("私人聊天內(nèi)容:"+toPeople+"已經(jīng)離線");

}

}

}

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("用戶離線:"+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

try

{

socket.close();

}

catch(IOException eee)

{

}

System.out.println(name+"用戶離開了");

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 用戶提交昵稱界面=null;

ChatArea 用戶聊天界面=null;

Hashtable listTable;

Label 提示條;

Panel north, center;

Thread thread;

public void init()

{

int width=getSize().width;

int height=getSize().height;

listTable=new Hashtable();

setLayout(new BorderLayout());

用戶提交昵稱界面=new InputNameTextField(listTable);

int h=用戶提交昵稱界面.getSize().height;

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

用戶聊天界面.setVisible(false);

提示條=new Label("正在連接到服務(wù)器,請(qǐng)稍等...",Label.CENTER);

提示條.setForeground(Color.red);

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

center=new Panel();

north.add(用戶提交昵稱界面);

north.add(提示條);

center.add(用戶聊天界面);

add(north,BorderLayout.NORTH);

add(center,BorderLayout.CENTER);

validate();

}

public void start()

{

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

{ try

{

socket.close();

in.close();

out.close();

用戶聊天界面.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)

{

提示條.setText("連接失敗");

}

if(socket!=null)

{

InetAddress address=socket.getInetAddress();

提示條.setText("連接:"+address+"成功");

用戶提交昵稱界面.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(用戶提交昵稱界面.get能否聊天()==true)

{

用戶聊天界面.setVisible(true);

用戶聊天界面.setName(用戶提交昵稱界面.getName());

用戶聊天界面.setSocketConnection(socket,in,out);

提示條.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 進(jìn)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);

進(jìn)入聊天室=new Button("進(jìn)入");

退出聊天室=new Button("退出");

進(jìn)入聊天室.addActionListener(this);

退出聊天室.addActionListener(this);

thread=new Thread(this);

add(new Label("昵稱:"));

add(nameFile);

add(male);

add(female);

add(進(jìn)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()==進(jìn)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+"性別:"+sex);

}

catch(IOException ee)

{

nameFile.setText("沒有連通服務(wù)器"+ee);

}

}

}

}

if(e.getSource()==退出聊天室)

{

try

{

out.writeUTF("用戶離開:");

}

catch(IOException ee)

{

}

}

}

public void run()

{

String message=null;

while(true)

{

if(in!=null)

{

try

{

message=in.readUTF();

}

catch(IOException e)

{

nameFile.setText("和服務(wù)器斷開"+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("該昵稱已被占用");

}

}

}

}

急求一個(gè)關(guān)于UDP的JAVA實(shí)現(xiàn)多人聊天源代碼

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("你已經(jīng)連接到服務(wù)器"+"\t"+"你的地址："+ss.getInetAddress()+"\t"

+"你的鏈接端口："+ss.getLocalPort()+"\n");

new ReadMessage(din).start();

new SendMessage(dout).start();

}

catch (IOException e)

{

e.printStackTrace();

}

}

public static void main(String[] args)

{

new Server();

}

}

//接受客戶端信息

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()+"客戶端說："+str);

if (str.equals("bye"))

{

System.out.println("客戶端下線！");

break;

}

}

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

// 發(fā)出服務(wù)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("服務(wù)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("服務(wù)器你好！我是客戶端");

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()+"服務(wù)器說："+str);

if (str.equals("bye"))

{

System.out.println("服務(wù)器已經(jīng)關(guān)閉，此程序自動(dòng)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("客戶端自己退出！");

System.exit(1);

}

}

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

java 聊天室 源代碼

【ClientSocketDemo.java 客戶端Java源代碼】

import java.net.*;

import java.io.*;

public class ClientSocketDemo

{

//聲明客戶端Socket對(duì)象socket

Socket socket = null;

//聲明客戶器端數(shù)據(jù)輸入輸出流

DataInputStream in;

DataOutputStream out;

//聲明字符串?dāng)?shù)組對(duì)象response，用于存儲(chǔ)從服務(wù)器接收到的信息

String response[];

//執(zhí)行過程中，沒有參數(shù)時(shí)的構(gòu)造方法，本地服務(wù)器在本地，取默認(rèn)端口10745

public ClientSocketDemo()

{

try

{

//創(chuàng)建客戶端socket，服務(wù)器地址取本地，端口號(hào)為10745

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

//創(chuàng)建客戶端數(shù)據(jù)輸入輸出流，用于對(duì)服務(wù)器端發(fā)送或接收數(shù)據(jù)

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

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

//獲取客戶端地址及端口號(hào)

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

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

//向服務(wù)器發(fā)送數(shù)據(jù)

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

out.writeUTF(ip);

out.writeUTF(port);

//從服務(wù)器接收數(shù)據(jù)

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();}

}

//執(zhí)行過程中，有一個(gè)參數(shù)時(shí)的構(gòu)造方法，參數(shù)指定服務(wù)器地址，取默認(rèn)端口10745

public ClientSocketDemo(String hostname)

{

try

{

//創(chuàng)建客戶端socket，hostname參數(shù)指定服務(wù)器地址，端口號(hào)為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();}

}

//執(zhí)行過程中，有兩個(gè)個(gè)參數(shù)時(shí)的構(gòu)造方法，第一個(gè)參數(shù)hostname指定服務(wù)器地址

//第一個(gè)參數(shù)serverPort指定服務(wù)器端口號(hào)

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 服務(wù)器端Java源代碼】

import java.net.*;

import java.io.*;

public class ServerSocketDemo

{

//聲明ServerSocket類對(duì)象

ServerSocket serverSocket;

//聲明并初始化服務(wù)器端監(jiān)聽端口號(hào)常量

public static final int PORT = 10745;

//聲明服務(wù)器端數(shù)據(jù)輸入輸出流

DataInputStream in;

DataOutputStream out;

//聲明InetAddress類對(duì)象ip，用于獲取服務(wù)器地址及端口號(hào)等信息

InetAddress ip = null;

//聲明字符串?dāng)?shù)組對(duì)象request，用于存儲(chǔ)從客戶端發(fā)送來的信息

String request[];

public ServerSocketDemo()

{

request = new String[3]; //初始化字符串?dāng)?shù)組

try

{

//獲取本地服務(wù)器地址信息

ip = InetAddress.getLocalHost();

//以PORT為服務(wù)端口號(hào)，創(chuàng)建serverSocket對(duì)象以監(jiān)聽該端口上的連接

serverSocket = new ServerSocket(PORT);

//創(chuàng)建Socket類的對(duì)象socket，用于保存連接到服務(wù)器的客戶端socket對(duì)象

Socket socket = serverSocket.accept();

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

//創(chuàng)建服務(wù)器端數(shù)據(jù)輸入輸出流，用于對(duì)客戶端接收或發(fā)送數(shù)據(jù)

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

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

//接收客戶端發(fā)送來的數(shù)據(jù)信息，并顯示

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]);

//向客戶端發(fā)送數(shù)據(jù)

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();

}

}

當(dāng)前標(biāo)題：java一對(duì)多聊天室代碼,java實(shí)現(xiàn)多人聊天室
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