java聊天小程序課程設計

❶ 求一JAVA 聊天小程序使用圖形用戶界面。能實現一個聊天室中多人聊天。可以兩人私聊。可以更改字體和顏色。

服務端代碼如下:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.net.*;
import java.io.*;

/*
* 聊天服務端的主框架類
*/
public class ChatServer extends JFrame implements ActionListener{

public static int port = 8888;//服務端的偵聽埠

ServerSocket serverSocket;//服務端Socket
Image icon;//程序圖標
JComboBox combobox;//選擇發送消息的接受者
JTextArea messageShow;//服務端的信息顯示
JScrollPane messageScrollPane;//信息顯示的滾動條
JTextField showStatus;//顯示用戶連接狀態
JLabel sendToLabel,messageLabel;
JTextField sysMessage;//服務端消息的發送
JButton sysMessageButton;//服務端消息的發送按鈕
UserLinkList userLinkList;//用戶鏈表

//建立菜單欄
JMenuBar jMenuBar = new JMenuBar();
//建立菜單組
JMenu serviceMenu = new JMenu ("服務(V)");
//建立菜單項
JMenuItem portItem = new JMenuItem ("埠設置(P)");
JMenuItem startItem = new JMenuItem ("啟動服務(S)");
JMenuItem stopItem=new JMenuItem ("停止服務(T)");
JMenuItem exitItem=new JMenuItem ("退出(X)");

JMenu helpMenu=new JMenu ("幫助(H)");
JMenuItem helpItem=new JMenuItem ("幫助(H)");

//建立工具欄
JToolBar toolBar = new JToolBar();

//建立工具欄中的按鈕組件
JButton portSet;//啟動服務端偵聽
JButton startServer;//啟動服務端偵聽
JButton stopServer;//關閉服務端偵聽
JButton exitButton;//退出按鈕

//框架的大小
Dimension faceSize = new Dimension(400, 600);

ServerListen listenThread;

JPanel downPanel ;
GridBagLayout girdBag;
GridBagConstraints girdBagCon;

/**
* 服務端構造函數
*/
public ChatServer(){
init();//初始化程序

//添加框架的關閉事件處理
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.pack();
//設置框架的大小
this.setSize(faceSize);

//設置運行時窗口的位置
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation( (int) (screenSize.width - faceSize.getWidth()) / 2,
(int) (screenSize.height - faceSize.getHeight()) / 2);
this.setResizable(false);

this.setTitle("聊天室服務端"); //設置標題

//程序圖標
icon = getImage("icon.gif");
this.setIconImage(icon); //設置程序圖標
show();

//為服務菜單欄設置熱鍵'V'
serviceMenu.setMnemonic('V');

//為埠設置快捷鍵為ctrl+p
portItem.setMnemonic ('P');
portItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_P,InputEvent.CTRL_MASK));

//為啟動服務快捷鍵為ctrl+s
startItem.setMnemonic ('S');
startItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_S,InputEvent.CTRL_MASK));

//為埠設置快捷鍵為ctrl+T
stopItem.setMnemonic ('T');
stopItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_T,InputEvent.CTRL_MASK));

//為退出設置快捷鍵為ctrl+x
exitItem.setMnemonic ('X');
exitItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_X,InputEvent.CTRL_MASK));

//為幫助菜單欄設置熱鍵'H'
helpMenu.setMnemonic('H');

//為幫助設置快捷鍵為ctrl+p
helpItem.setMnemonic ('H');
helpItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_H,InputEvent.CTRL_MASK));

}

/**
* 程序初始化函數
*/
public void init(){

Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());

//添加菜單欄
serviceMenu.add (portItem);
serviceMenu.add (startItem);
serviceMenu.add (stopItem);
serviceMenu.add (exitItem);
jMenuBar.add (serviceMenu);
helpMenu.add (helpItem);
jMenuBar.add (helpMenu);
setJMenuBar (jMenuBar);

//初始化按鈕
portSet = new JButton("埠設置");
startServer = new JButton("啟動服務");
stopServer = new JButton("停止服務" );
exitButton = new JButton("退出" );
//將按鈕添加到工具欄
toolBar.add(portSet);
toolBar.addSeparator();//添加分隔欄
toolBar.add(startServer);
toolBar.add(stopServer);
toolBar.addSeparator();//添加分隔欄
toolBar.add(exitButton);
contentPane.add(toolBar,BorderLayout.NORTH);

//初始時，令停止服務按鈕不可用
stopServer.setEnabled(false);
stopItem .setEnabled(false);

//為菜單欄添加事件監聽
portItem.addActionListener(this);
startItem.addActionListener(this);
stopItem.addActionListener(this);
exitItem.addActionListener(this);
helpItem.addActionListener(this);

//添加按鈕的事件偵聽
portSet.addActionListener(this);
startServer.addActionListener(this);
stopServer.addActionListener(this);
exitButton.addActionListener(this);

combobox = new JComboBox();
combobox.insertItemAt("所有人",0);
combobox.setSelectedIndex(0);

messageShow = new JTextArea();
messageShow.setEditable(false);
//添加滾動條
messageScrollPane = new JScrollPane(messageShow,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
messageScrollPane.setPreferredSize(new Dimension(400,400));
messageScrollPane.revalidate();

showStatus = new JTextField(35);
showStatus.setEditable(false);

sysMessage = new JTextField(24);
sysMessage.setEnabled(false);
sysMessageButton = new JButton();
sysMessageButton.setText("發送");

//添加系統消息的事件偵聽
sysMessage.addActionListener(this);
sysMessageButton.addActionListener(this);

sendToLabel = new JLabel("發送至:");
messageLabel = new JLabel("發送消息:");
downPanel = new JPanel();
girdBag = new GridBagLayout();
downPanel.setLayout(girdBag);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx = 0;
girdBagCon.gridy = 0;
girdBagCon.gridwidth = 3;
girdBagCon.gridheight = 2;
girdBagCon.ipadx = 5;
girdBagCon.ipady = 5;
JLabel none = new JLabel(" ");
girdBag.setConstraints(none,girdBagCon);
downPanel.add(none);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx = 0;
girdBagCon.gridy = 2;
girdBagCon.insets = new Insets(1,0,0,0);
girdBagCon.ipadx = 5;
girdBagCon.ipady = 5;
girdBag.setConstraints(sendToLabel,girdBagCon);
downPanel.add(sendToLabel);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx =1;
girdBagCon.gridy = 2;
girdBagCon.anchor = GridBagConstraints.LINE_START;
girdBag.setConstraints(combobox,girdBagCon);
downPanel.add(combobox);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx = 0;
girdBagCon.gridy = 3;
girdBag.setConstraints(messageLabel,girdBagCon);
downPanel.add(messageLabel);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx = 1;
girdBagCon.gridy = 3;
girdBag.setConstraints(sysMessage,girdBagCon);
downPanel.add(sysMessage);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx = 2;
girdBagCon.gridy = 3;
girdBag.setConstraints(sysMessageButton,girdBagCon);
downPanel.add(sysMessageButton);

girdBagCon = new GridBagConstraints();
girdBagCon.gridx = 0;
girdBagCon.gridy = 4;
girdBagCon.gridwidth = 3;
girdBag.setConstraints(showStatus,girdBagCon);
downPanel.add(showStatus);

contentPane.add(messageScrollPane,BorderLayout.CENTER);
contentPane.add(downPanel,BorderLayout.SOUTH);

//關閉程序時的操作
this.addWindowListener(
new WindowAdapter(){
public void windowClosing(WindowEvent e){
stopService();
System.exit(0);
}
}
);
}

/**
* 事件處理
*/
public void actionPerformed(ActionEvent e) {
Object obj = e.getSource();
if (obj == startServer || obj == startItem) { //啟動服務端
startService();
}
else if (obj == stopServer || obj == stopItem) { //停止服務端
int j=JOptionPane.showConfirmDialog(
this,"真的停止服務嗎?","停止服務",
JOptionPane.YES_OPTION,JOptionPane.QUESTION_MESSAGE);

if (j == JOptionPane.YES_OPTION){
stopService();
}
}
else if (obj == portSet || obj == portItem) { //埠設置
//調出埠設置的對話框
PortConf portConf = new PortConf(this);
portConf.show();
}
else if (obj == exitButton || obj == exitItem) { //退出程序
int j=JOptionPane.showConfirmDialog(
this,"真的要退出嗎?","退出",
JOptionPane.YES_OPTION,JOptionPane.QUESTION_MESSAGE);

if (j == JOptionPane.YES_OPTION){
stopService();
System.exit(0);
}
}
else if (obj == helpItem) { //菜單欄中的幫助
//調出幫助對話框
Help helpDialog = new Help(this);
helpDialog.show();
}
else if (obj == sysMessage || obj == sysMessageButton) { //發送系統消息
sendSystemMessage();
}
}

/**
* 啟動服務端
*/
public void startService(){
try{
serverSocket = new ServerSocket(port,10);
messageShow.append("服務端已經啟動，在"+port+"埠偵聽...\n");

startServer.setEnabled(false);
startItem.setEnabled(false);
portSet.setEnabled(false);
portItem.setEnabled(false);

stopServer .setEnabled(true);
stopItem .setEnabled(true);
sysMessage.setEnabled(true);
}
catch (Exception e){
//System.out.println(e);
}
userLinkList = new UserLinkList();

listenThread = new ServerListen(serverSocket,combobox,
messageShow,showStatus,userLinkList);
listenThread.start();
}

/**
* 關閉服務端
*/
public void stopService(){
try{
//向所有人發送伺服器關閉的消息
sendStopToAll();
listenThread.isStop = true;
serverSocket.close();

int count = userLinkList.getCount();

int i =0;
while( i < count){
Node node = userLinkList.findUser(i);

node.input .close();
node.output.close();
node.socket.close();

i ++;
}

stopServer .setEnabled(false);
stopItem .setEnabled(false);
startServer.setEnabled(true);
startItem.setEnabled(true);
portSet.setEnabled(true);
portItem.setEnabled(true);
sysMessage.setEnabled(false);

messageShow.append("服務端已經關閉\n");

combobox.removeAllItems();
combobox.addItem("所有人");
}
catch(Exception e){
//System.out.println(e);
}
}

/**
* 向所有人發送伺服器關閉的消息
*/
public void sendStopToAll(){
int count = userLinkList.getCount();

int i = 0;
while(i < count){
Node node = userLinkList.findUser(i);
if(node == null) {
i ++;
continue;
}

try{
node.output.writeObject("服務關閉");
node.output.flush();
}
catch (Exception e){
//System.out.println("$$$"+e);
}

i++;
}
}

/**
* 向所有人發送消息
*/
public void sendMsgToAll(String msg){
int count = userLinkList.getCount();//用戶總數

int i = 0;
while(i < count){
Node node = userLinkList.findUser(i);
if(node == null) {
i ++;
continue;
}

try{
node.output.writeObject("系統信息");
node.output.flush();
node.output.writeObject(msg);
node.output.flush();
}
catch (Exception e){
//System.out.println("@@@"+e);
}

i++;
}

sysMessage.setText("");
}

/**
* 向客戶端用戶發送消息
*/
public void sendSystemMessage(){
String toSomebody = combobox.getSelectedItem().toString();
String message = sysMessage.getText() + "\n";

messageShow.append(message);

//向所有人發送消息
if(toSomebody.equalsIgnoreCase("所有人")){
sendMsgToAll(message);
}
else{
//向某個用戶發送消息
Node node = userLinkList.findUser(toSomebody);

try{
node.output.writeObject("系統信息");
node.output.flush();
node.output.writeObject(message);
node.output.flush();
}
catch(Exception e){
//System.out.println("!!!"+e);
}
sysMessage.setText("");//將發送消息欄的消息清空
}
}

/**
* 通過給定的文件名獲得圖像
*/
Image getImage(String filename) {
URLClassLoader urlLoader = (URLClassLoader)this.getClass().
getClassLoader();
URL url = null;
Image image = null;
url = urlLoader.findResource(filename);
image = Toolkit.getDefaultToolkit().getImage(url);
MediaTracker mediatracker = new MediaTracker(this);
try {
mediatracker.addImage(image, 0);
mediatracker.waitForID(0);
}
catch (InterruptedException _ex) {
image = null;
}
if (mediatracker.isErrorID(0)) {
image = null;
}

return image;
}

public static void main(String[] args) {
ChatServer app = new ChatServer();
}
}

❷ Java 聊天小程序

客戶端：

package clientsocket;
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;

public class Main {
private Socket s;
private DataInputStream dis;
private DataOutputStream dos;
private TextArea ta;
private TextField tf;

public static void main(String[] args) {
Main m=new Main();
m.createUI();
m.connect();
m.createThread();

}
public void connect(){
try{s=new Socket("127.0.0.1",8888);//127.0.0.1是你自己的ip號
dos=new DataOutputStream(s.getOutputStream());
dis=new DataInputStream(s.getInputStream());}
catch(IOException e){ e.printStackTrace();}

}
public void createUI(){
Frame f=new Frame("Client");
ta=new TextArea();
tf=new TextField();
Button send=new Button("發送");
Panel p=new Panel();
p.setLayout(new BorderLayout());
p.add(tf,"Center");
p.add(send,"East");
f.add(ta,"Center");
f.add(p,"South");
MyClientListener listener=new MyClientListener(this);
send.addActionListener(listener);
tf.addActionListener(listener);
f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
f.setSize(400,400);
f.setLocation(600,0);
f.setVisible(true);

}
public void createThread(){
MyClientReader reader=new MyClientReader(this);
reader.start();

}

public void close(){
try{
dis.close();
dos.close();
s.close();
}
catch(IOException e){ e.printStackTrace();}

}

public DataInputStream getDataInputStream(){ return dis;}
public DataOutputStream getDataOutputStream(){return dos;}
public TextArea getTextArea(){return ta;}
public TextField getTextField(){return tf;}
}

class MyClientListener implements ActionListener{
private Main client;
public MyClientListener(Main client){
this.client=client;
}
public void actionPerformed(ActionEvent e){
TextField tf=client.getTextField();
String info=tf.getText();
client.getTextArea().append("自己說："+info+"\n");
try{
client.getDataOutputStream().writeUTF(info);
}
catch(IOException e1){e1.printStackTrace();}
if (info.equals("bye")){
client.close();
System.exit(0);
}
tf.setText("");
tf.requestFocus();

}

}

class MyClientReader extends Thread {
private Main client;
public MyClientReader(Main client){
this.client=client;
}
public void run(){
String info;
DataInputStream dis=client.getDataInputStream();
TextArea ta=client.getTextArea();
try{
while (true){
info=dis.readUTF();
ta.append("對方說："+info+"\n");
if (info.equals("bye")){
client.close();
System.exit(0);
}
}
}
catch(IOException e){
e.printStackTrace();
}
}
}

伺服器端：
package serversocket;

import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;

public class Main {
private ServerSocket ss;
private Socket s;
private DataInputStream dis;
private DataOutputStream dos;
private TextArea ta;
private TextField tf;

public static void main(String[] args) {
Main m=new Main();
m.createUI();
m.connect();
m.createThread();

}
public void connect(){
try{ss=new ServerSocket(8888); s=ss.accept();
dos=new DataOutputStream(s.getOutputStream());
dis=new DataInputStream(s.getInputStream());}
catch(IOException e){ e.printStackTrace();}

}
public void createUI(){
Frame f=new Frame("Server");
ta=new TextArea();
tf=new TextField();
Button send=new Button("發送");
Panel p=new Panel();
p.setLayout(new BorderLayout());
p.add(tf,"Center");
p.add(send,"East");
f.add(ta,"Center");
f.add(p,"South");
MyServerListener listener=new MyServerListener(this);
send.addActionListener(listener);
tf.addActionListener(listener);
f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
f.setSize(400,400);
f.setLocation(600,0);
f.setVisible(true);

}
public void createThread(){
MyServerReader reader=new MyServerReader(this);
reader.start();

}

public void close(){
try{
dis.close();
dos.close();
s.close();
ss.close();
}
catch(IOException e){ e.printStackTrace();}

}

public DataInputStream getDataInputStream(){ return dis;}
public DataOutputStream getDataOutputStream(){return dos;}
public TextArea getTextArea(){return ta;}
public TextField getTextField(){return tf;}
}

class MyServerListener implements ActionListener{
private Main client;
public MyServerListener(Main client){
this.client=client;
}
public void actionPerformed(ActionEvent e){
TextField tf=client.getTextField();
String info=tf.getText();
client.getTextArea().append("自己說："+info+"\n");
try{
client.getDataOutputStream().writeUTF(info);
}
catch(IOException e1){e1.printStackTrace();}
if (info.equals("bye")){
client.close();
System.exit(0);
}
tf.setText("");
tf.requestFocus();

}

}

class MyServerReader extends Thread {
private Main client;
public MyServerReader(Main client){
this.client=client;
}
public void run(){
String info;
DataInputStream dis=client.getDataInputStream();
TextArea ta=client.getTextArea();
try{
while (true){
info=dis.readUTF();
ta.append("對方說："+info+"\n");
if (info.equals("bye")){
client.close();
System.exit(0);
}
}
}
catch(IOException e){
e.printStackTrace();
}
}
}

要先運行伺服器端，再運行客戶端！

❸ 如何用java做一個聊天小程序 要求使用圖形用戶界面,可以實現一個聊天室中多人聊天,也可以兩人私聊,

給你一個簡單的實現吧，注意一定要先運行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();
}
}

❹ 如何用Java編寫一個聊天室程序，可以支持單聊和多聊

聊天復程序又叫即時通訊系統制
分類兩部分：客戶端和服務端
客戶端：用戶聊天的界面
服務端：接收消息並轉發到指定用戶
其中服務端和客戶端用tcp或者udp連接，使用socket編程完成通信。
按著這個思路可以開發出一套聊天程序
客戶端常用界面 bs版本的又layim
服務端 openfire或者自己實現

❺ 求一個JAVA程序設計－聊天室的程序，要是有課程設計報告書和系統最好！

哎 現在的學生
我有一個 功能有私聊 群聊 發文件 截屏 視頻 。。

❻ 用java設計一個聊天小程序

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