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java聊天室源代码介绍 java实现聊天室功能包含全部代码,有界面
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java实现聊天室是怎么做到的？
Java 实现聊天室可以分为以下几个步骤：
建立服务器端
首先需要建立一个服务器端，负责接收客户端的连接请求并处理客户端发送过来的消息。
建立客户端
然后需要建立客户端，客户端通过网络连接到服务器端，并向服务器端发送消息。
实现通信协议
为了实现聊天室功能，需要定义一个通信协议，规定客户端和服务器端之间的通信格式，例如消息的头部和内容等。
实现多线程处理
聊天室通常会有多个用户同时在线，因此需要使用多线程来处理多个客户端的连接请求和消息传递。
实现GUI界面（可选）
为了方便用户使用，可以实现一个GUI界面，让用户可以方便地发送和接收消息。
以下是一个简单的 Java 聊天室的代码示例：
java
Copy code
// 服务器端代码
public class Server {
public static void main(String[] args) {
try {
ServerSocket serverSocket = new ServerSocket(8888);
while (true) {
Socket socket = serverSocket.accept();
new Thread(new ServerThread(socket)).start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
class ServerThread implements Runnable {
private Socket socket;
private BufferedReader reader;
private PrintWriter writer;
public ServerThread(Socket socket) {
this.socket = socket;
try {
reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
writer = new PrintWriter(socket.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
}
}
public void run() {
try {
String msg;
while ((msg = reader.readLine()) != null) {
// 处理客户端发送过来的消息
System.out.println("接收到消息：" + msg);
// 将消息发送给所有客户端
for (Socket s : ServerThreadList.getList()) {
if (s != socket) {
PrintWriter w = new PrintWriter(s.getOutputStream());
w.println(msg);
w.flush();
}
}
}
// 关闭连接
socket.close();
ServerThreadList.removeThread(this);
} catch (IOException e) {
e.printStackTrace();
}
}
}
class ServerThreadList {
private static List
list = new ArrayList();
public static void addThread(ServerThread thread) {
list.add(thread);
}
public static void removeThread(ServerThread thread) {
list.remove(thread);
}
public static List
getList() {
return list;
}
}
// 客户端代码
public class Client {
public static void main(String[] args) {
try {
Socket socket = new Socket("localhost", 8888);
new Thread(new ClientThread(socket)).start();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
PrintWriter writer = new PrintWriter(socket.getOutputStream());
while (true) {
String msg = reader.readLine();
writer.println(msg);
writer.flush();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
class ClientThread implements Runnable {
private Socket socket;
private BufferedReader reader;
public ClientThread(Socket socket) {
this.socket = socket;
try {
reader
相关问答
Q1: JAVA聊天室 客户端 和 服务器 完整代码
CS模式的QQ这是服务器:ChatServer.javaimport java.net.*;
import java.io.*;
public class ChatServer
{
final static int thePort=8189;
ServerSocket theServer;
ChatHandler[] chatters;
int numbers=0;
public static void main(String args[])
{
ChatServer app=new ChatServer();
app.run();
}
public ChatServer()
{
try
{
theServer=new ServerSocket(thePort);
chatters=new ChatHandler[10];
}
catch(IOException io){}
}
public void run()
{
try
{
System.out.println("服务器已经建立！");
while(numbers10)
{
Socket theSocket=theServer.accept();
ChatHandler chatHandler=new ChatHandler(theSocket,this);
chatters[numbers]=chatHandler;
numbers++;
}
}catch(IOException io){}
}
public synchronized void removeConnectionList(ChatHandler c)
{
int index=0;
for(int i=0;i=numbers-1;i++)
if(chatters[i]==c)index=i;
for(int i=index;inumbers-1;i++)
chatters[i]=chatters[i+1];
chatters[numbers-1]=null;
numbers--;
}
public synchronized String returnUsernameList()
{
String line="";
for(int i=0;i=numbers-1;i++)
line=line+chatters[i].user+":";
return line;
}
public void broadcastMessage(String line)
{
System.out.println("发布信息:"+line);
for(int i=0;i=numbers-1;i++)
chatters[i].sendMessage(line);
}
}====================================================这是客户端：ChatClient.javaimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.*;
import java.io.*;
public class ChatClient extends Thread implements ActionListener
{
JTextField messageField,IDField,ipField,portField;
JTextArea message,users;
JButton connect,disconnect;
String user="";
String userList[]=new String[10];
Socket theSocket;
BufferedReader in;
PrintWriter out;
boolean connected=false;
Thread thread;
public static void main(String args[])
{
JFrame frame=new JFrame("聊天室");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ChatClient cc=new ChatClient();
JPanel content=cc.createComponents();
frame.getContentPane().add(content);
frame.setSize(550,310);
frame.setVisible(true);
}
public JPanel createComponents()
{
JPanel pane=new JPanel(new BorderLayout());
message=new JTextArea(10,35);
message.setEditable(false);
JPanel paneMsg=new JPanel();
paneMsg.setBorder(BorderFactory.createTitledBorder("聊天内容"));
paneMsg.add(message);
users=new JTextArea(10,10);
JPanel listPanel=new JPanel();
listPanel.setBorder(BorderFactory.createTitledBorder("在线用户:"));
listPanel.add(users);
messageField=new JTextField(50);
IDField=new JTextField(5);
ipField=new JTextField("LocalHost");
portField=new JTextField("8189");
connect=new JButton("连 接");
disconnect=new JButton("断 开");
disconnect.setEnabled(false);
JPanel buttonPanel=new JPanel();
buttonPanel.add(new Label("服务器IP:"));
buttonPanel.add(ipField);
buttonPanel.add(new Label("端口："));buttonPanel.add(portField);
buttonPanel.add(new Label("用户名："));
buttonPanel.add(IDField);
buttonPanel.add(connect);
buttonPanel.add(disconnect);
pane.add(messageField,"South");
pane.add(buttonPanel,"North");
pane.add(paneMsg,"Center");
pane.add(listPanel,"West");
connect.addActionListener(this);
disconnect.addActionListener(this);
messageField.addActionListener(this);
IDField.addActionListener(this);
ipField.addActionListener(this);
return pane;
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==connect){
user=IDField.getText();
String ip=ipField.getText();
int port =Integer.parseInt(portField.getText());
if(!user.equals("")connectToServer(ip,port,user))
{
disconnect.setEnabled(true);
connect.setEnabled(false);
}
}
if(e.getSource()==disconnect)disconnectFromServer();
if(e.getSource()==messageField)
if(theSocket!=null)
{
out.println("MESSAGE:"+messageField.getText());
messageField.setText("");
}
}
public void disconnectFromServer()
{
if(theSocket!=null)
{
try
{
connected=false;
out.println("LEAVE:"+user);
disconnect.setEnabled(false);
connect.setEnabled(true);
thread=null;
theSocket.close();
}catch(IOException io){}
theSocket=null;
message.setText("");
users.setText("");
}
}
public boolean connectToServer(String ip,int port,String ID)
{
if(theSocket!=null)
return false;
try
{
theSocket=new Socket(ip,port);
in=new BufferedReader(new InputStreamReader(theSocket.getInputStream()));
out=new PrintWriter(new OutputStreamWriter(theSocket.getOutputStream()),true);
out.println("USER:"+user);
message.setText("");
connected=true;
thread=new Thread(this);
thread.start();
}catch(Exception e){return false;}
return true;
}
public void extractMessage(String line)
{
System.out.println(line);
Message messageline;
messageline=new Message(line);
if(messageline.isValid())
{
if(messageline.getType().equals("JOIN"))
{
user=messageline.getBody();
message.append(user+"进入了聊天室\n");
}
else if(messageline.getType().equals("LIST"))
updateList(messageline.getBody());
else if(messageline.getType().equals("MESSAGE"))
message.append(messageline.getBody()+"\n");
else if(messageline.getType().equals("REMOVE"))
message.append(messageline.getBody()+"离开了聊天室\n");
}
else
message.append("出现问题："+line+"\n");
}
public void updateList(String line)
{
users.setText("");
String str=line;
for(int i=0;i10;i++)
userList[i]="";
int index=str.indexOf(":");
int a=0;
while(index!=-1){
userList[a]=str.substring(0,index);
str=str.substring(index+1);
a++;
index=str.indexOf(":");
}
for(int i=0;i10;i++)
users.append(userList[i]+"\n");
}
public void run(){
try{
String line="";
while(connected line!=null){
line=in.readLine();
if(line!=null) extractMessage(line);
}
}catch(IOException e){}
}
} =======================================================import java.net.*;
import java.io.*;
class ChatHandler extends Thread{
Socket theSocket;
BufferedReader in;
PrintWriter out;
int thePort;
ChatServer parent;
String user="";
boolean disconnect=false;
public ChatHandler(Socket socket,ChatServer parent){
try{
theSocket=socket;
this.parent=parent;
in=new BufferedReader(new InputStreamReader(theSocket.getInputStream()));
out=new PrintWriter(new OutputStreamWriter(theSocket.getOutputStream()),true);
thePort=theSocket.getPort();
start();
}catch(IOException io){}
}
public void sendMessage(String line){
out.println(line);
}
public void setupUserName(String setname){
user=setname;
//System.out.print(user+"参加");
parent.broadcastMessage("JOIN:"+user);
}
public void extractMessage(String line){
Message messageline;
messageline = new Message(line);
if(messageline.isValid()){
if(messageline.getType().equals("USER")){
setupUserName(messageline.getBody());
parent.broadcastMessage("LIST:"+parent.returnUsernameList());
}
else if(messageline.getType().equals("MESSAGE")){
parent.broadcastMessage("MESSAGE:"+user+"说: "+messageline.getBody());
}
else if(messageline.getType().equals("LEAVE")){
String c=disconnectClient();
parent.broadcastMessage("REMOVE:"+c);
parent.broadcastMessage("LIST:"+parent.returnUsernameList());
}
}
else
sendMessage("命令不存在!");
}
public String disconnectClient(){
try{
in.close();
out.close();
theSocket.close();
parent.removeConnectionList(this);
disconnect=true;
}catch(Exception ex){}
return user;
}
public void run(){
String line,name;
boolean valid=false;
try{
while((line=in.readLine())!=null){
System.out.println("收到:"+line);
extractMessage(line);
}
}catch(IOException io){}
}
}
=========================================================
Message.javapublic class Message{
private String type;
private String body;
private boolean valid;
public Message(String messageLine){
valid=false;
type=body=null;
int pos=messageLine.indexOf(":");
if(pos=0){
type=messageLine.substring(0,pos).toUpperCase();
body=messageLine.substring(pos+1);
valid=true;
}
}
public Message(String type,String body){
valid=true;
this.type=type;
this.body=body;
}
public String getType(){
return type;
}
public String getBody(){
return body;
}
public boolean isValid(){
return valid;
}
} ==================================================共有4个文件，先运行服务段端。。。 这是我以前学的时候写过的！希望能帮的上你
Q2: JAVA聊天室
无数据库版本;
================================= Client =================================
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
@SuppressWarnings("serial")
public class ChatClient extends Frame {
TextField tfText = new TextField();
TextArea taText = new TextArea();
Socket s = null;
DataOutputStream dos = null;
DataInputStream dis = null;
public static void main(String[] args) {
new ChatClient().launchFrame();
}
ChatClient() {
super("Chat Client v1.1");
}
public void launchFrame() {
setBounds(200, 200, 400, 300);
setResizable(false);
add(taText, BorderLayout.NORTH);
add(tfText, BorderLayout.SOUTH);
pack();
taText.setEditable(false);
tfText.addActionListener(new tfTextListener());
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
disConnect();
System.exit(0);
}
});
setVisible(true);
connect();
new Thread(new StrGetIn()).start();
}
private void connect() {
try {
s = new Socket("127.0.0.1", 24031);
dos = new DataOutputStream(s.getOutputStream());
dis = new DataInputStream(s.getInputStream());
} catch (IOException e) {
System.out.println("服务器不存在或系统错误，请联系管理员，系统退出...");
System.exit(-1);
}
}
private void disConnect() {
try {
dos.writeUTF("Client exit...");
dos.close();
dis.close();
s.close();
} catch (IOException e1) {
System.out.println("无法关闭网络链接，系统非法退出...");
}
}
private class tfTextListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String str = tfText.getText().trim();
try {
if (!str.equals("")) {
//taText.append(str + "\n");
dos.writeUTF(str);
dos.flush();
} else {
taText.append("系统提示：****发送内容不能为空****\n");
}
} catch (IOException e1) {
System.out.println("网络连接错误，请联系管理员，系统退出...");
System.exit(-1);
}
tfText.setText("");
}
}
private class StrGetIn implements Runnable {
public void run() {
try {
while(true) {
taText.append(dis.readUTF());
}
} catch (IOException e) {
System.out.println("Client readUTF error");
}
}
}
}
Q3: 用java编写多人聊天室程序，不需要太复杂求大神发给我，最好能运行，有源代码。谢谢了
文件1java聊天室源代码介绍：
package com.qq;
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;
public 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java聊天室源代码介绍的地址：" + 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java聊天室源代码介绍！");
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();
}
}
}
----------------------------------------
文件2：
package com.qq;
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;
public 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java聊天室源代码介绍，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();
}
}
}
Q4: 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");
}
}
}
}
Q5: 为java聊天室代码加详细注释，并说明设计思路。好的加100分。
import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;//引入包。
public class ChatClient {
public static void main(String[] args) {
ChatClient cc = new ChatClient();
cc.receive();
}
JTextField jtf; // 文本条
JTextArea jta; //文本域。
Socket s; //客户端
PrintWriter out; //输出流
BufferedReader in; //输入流
public ChatClient() {
JFrame frame = new JFrame("ChatClient");//窗口
frame.setSize(400, 300); //大小
jta = new JTextArea(); //文本域
jta.setEditable(false); //不可编辑
jtf = new JTextField();//文件条
jtf.addActionListener(new ActionListener() { //添加监听。
public void actionPerformed(ActionEvent arg0) {
send(); //调用send（）方法
}
});
frame.getContentPane().add(new JScrollPane(jta)); //添加滚动条
frame.getContentPane().add(jtf, "South"); //添加文本条
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //关闭窗口。
frame.setVisible(true); //可显示的。
try {
s = new Socket("127.0.0.1", 9000); //连接服务端 socket("主机名"，端口号);
in = new BufferedReader(new InputStreamReader(s.getInputStream())); //建立输入流
out = new PrintWriter(s.getOutputStream());//输出流
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void receive() { //接受服务端发来别的客户端的信息。
while (true) {
try {
String text = in.readLine(); //读一行
this.jta.append(text + "\n"); //jta 添加上读入的。
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}
}
}
public void send() { //发送消息
String text = this.jtf.getText(); //得到你输入的消息
this.jtf.setText(""); //在文本域中显示你输入的消息。
out.println(text); //打印出。
out.flush(); //清空
}
}
Server端
import java.net.*;
import java.io.*;
import java.util.*;//引入包
public class ChatServer {
public static void main(String[] args) throws Exception {
ServerSocket ss = new ServerSocket(9000); //建立服务端，端口号为9000
List list = new ArrayList(); //创建个List集合。
while (true) {
Socket s = ss.accept(); //等待客户端的请求。
list.add(s); //把每一个client都add到集合中去。
Thread t = new ServerThread(s, list); //线程。
t.start(); //启动。
}
}
}
class ServerThread extends Thread {
Socket s;
List list;
BufferedReader in;
PrintWriter out;
public ServerThread(Socket s, List list) { //构造。传入socket和list。
this.s = s;
this.list = list;
try {
in = new BufferedReader(new InputStreamReader(s.getInputStream())); //输入流
out = new PrintWriter(s.getOutputStream()); //输出流
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void run() { //必须实现其run（）方法。
while (true) {
try {
String str = in.readLine(); //得到client端的message。
if (str == null) //如果没有消息就返回。
return;
Iterator it = list.iterator(); //遍历list。
while (it.hasNext()) { //如果list有下一个
Socket socket = (Socket) (it.next()); //因为list中都是存的socket
PrintWriter o = new PrintWriter(socket.getOutputStream()); //输出流
o.println(str); //输出
o.flush(); //清空
}
} catch (IOException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
return;
}
}
}
}
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