java swing多人聊天室_使用java swing和socket程式設計實作簡單的多人聊天室-Go語言中文社群...

完成效果如下

用戶端：

伺服器端：

用戶端功能：

輸入伺服器對應的端口，IP号，使用者名(昵稱)，可以互相發送消息

伺服器端功能：

輸入端口号，啟動，可以向所有用戶端發送消息，IP位址自動擷取。

下面是用戶端界面：

package Test;

import UI.ChatRoomClientFrame;

public class ChatRoomClient {

public static void main(String[] args) {

new ChatRoomClientFrame().setVisible(true);

}

}用戶端實作：

package UI;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FileDialog;

import java.awt.Font;

import java.awt.Image;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.net.Socket;

import java.net.UnknownHostException;

import java.util.Properties;

import javax.swing.JButton;

import javax.swing.JColorChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JSplitPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.border.TitledBorder;

public class ChatRoomClientFrame extends JFrame{

private static final long serialVersionUID = 7909370607161820239L;

private JPanel panel;

private JPanel northPanel;

private JPanel southPanel;

private JTextField port;

private JTextField IP;

private JTextField userName;

private JTextArea userlist;

private JTextArea chatRecords;

private JScrollPane leftPanel;

private JScrollPane rightPanel;

private JSplitPane centerPanel;

private JTextField message;

private JButton link;

private JButton discon;

private JButton send;

private JPanel Jpanel;

private JMenuBar bar;

private JMenu file;

private JMenuItem save;

private JMenu format;

private JMenuItem font;

private JMenuItem foreGround;

private JMenuItem backGround;

private Font myfont;

private boolean isConnect = false;

private Socket socket;

private DataInputStream dis;

private DataOutputStream dos;

private ClientThread ct;

//private ArrayList users = new ArrayList();

private String[] userstr;

private int usersLength = 0;

public ChatRoomClientFrame(){

initServer();

link.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

if(userName.getText().trim().equals("")){

JOptionPane.showMessageDialog(null, "使用者名不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

}else{

try {

socket = new Socket(IP.getText(),Integer.parseInt(port.getText()));

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

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

if(socket!=null){

port.setEditable(false);

IP.setEditable(false);

userName.setEditable(false);

link.setEnabled(false);

discon.setEnabled(true);

ct = new ClientThread();

ct.start();

if(isConnect==false){

dos.writeUTF(userName.getText()+" 進入了聊天室");

isConnect=true;

}

}

} catch (NumberFormatException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (UnknownHostException e1) {

e1.printStackTrace();

} catch (IOException e1) {

JOptionPane.showMessageDialog(null, "伺服器未開啟","錯誤",JOptionPane.ERROR_MESSAGE);

e1.printStackTrace();

}

}

}

});

discon.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

try {

if(isConnect==true){

isConnect=false;

dos.writeUTF(userName.getText()+" 離開了聊天室");

userlist.setText("");

userstr=null;

usersLength=0;

dos.close();

dis.close();

socket.close();

chatRecords.append("n");

chatRecords.append("你離開了聊天室");

chatRecords.setCaretPosition(chatRecords.getDocument().getLength());

port.setEditable(true);

IP.setEditable(true);

userName.setEditable(true);

link.setEnabled(true);

discon.setEnabled(false);

ct.stop();

}

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

send.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

send();

}

});

message.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

send();

}

});

font.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

MyFontChooser mf = new MyFontChooser(chatRecords.getFont());

int returnValue = mf.showFontDialog(ChatRoomClientFrame.this);

// 如果按下的是确定按鈕

if (returnValue == MyFontChooser.APPROVE_OPTION) {

// 擷取選擇的字型

Font font = mf.getSelectFont();

// 将字型設定到JTextArea中

chatRecords.setFont(font);

}

}

});

save.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

FileDialog saveFile = new FileDialog(ChatRoomClientFrame.this, "儲存檔案...", FileDialog.SAVE);

saveFile.setVisible(true);

String filePath = saveFile.getDirectory() + saveFile.getFile();

try {

FileOutputStream fos = new FileOutputStream(filePath);

fos.write(chatRecords.getText().getBytes());

fos.close();

} catch (FileNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

backGround.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Color bc = JColorChooser.showDialog(ChatRoomClientFrame.this, "選擇顔色", Color.BLACK);

chatRecords.setBackground(bc);

}

});

foreGround.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Color fc = JColorChooser.showDialog(ChatRoomClientFrame.this, "選擇顔色", Color.BLACK);

chatRecords.setForeground(fc);

}

});

initFrame();

}

private void initServer() {

Jpanel = new JPanel();

Jpanel.setLayout(new BorderLayout());

panel = new JPanel();

panel.setLayout(new BorderLayout());

northPanel = new JPanel();

northPanel.setBorder(new TitledBorder("連接配接資訊"));

bar = new JMenuBar();

file = new JMenu("記錄");

save = new JMenuItem("儲存");

format = new JMenu("格式");

font = new JMenuItem("字型");

foreGround = new JMenuItem("前景色");

backGround = new JMenuItem("背景色");

file.add(save);

format.add(font);

format.add(foreGround);

format.add(backGround);

bar.add(file);

bar.add(format);

Jpanel.add(bar,BorderLayout.NORTH);

port = new JTextField(8);

port.setText("8088");

IP = new JTextField(8);

IP.setText("192.168.24.8");

userName = new JTextField(8);

link= new JButton("啟動");

discon= new JButton("停止");

discon.setEnabled(false);

northPanel.add(new JLabel("端口号"));

northPanel.add(port);

northPanel.add(new JLabel("伺服器IP"));

northPanel.add(IP);

northPanel.add(new JLabel("使用者名"));

northPanel.add(userName);

northPanel.add(link);

northPanel.add(discon);

panel.add(northPanel,BorderLayout.NORTH);

userlist = new JTextArea();

userlist.setLineWrap(true);

userlist.setEditable(false);

leftPanel =new JScrollPane(userlist);

leftPanel.setBorder(new TitledBorder("線上使用者"));

panel.add(leftPanel,BorderLayout.EAST);

chatRecords = new JTextArea();

chatRecords.setLineWrap(true);

chatRecords.setEditable(false);

rightPanel =new JScrollPane(chatRecords);

rightPanel.setBorder(new TitledBorder("聊天資訊"));

centerPanel = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftPanel, rightPanel);

centerPanel.setDividerLocation(100);

panel.add(centerPanel,BorderLayout.CENTER);

southPanel = new JPanel();

southPanel.setBorder(new TitledBorder("寫消息"));

message = new JTextField(50);

send = new JButton("發送");

southPanel.add(message);

southPanel.add(send);

panel.add(southPanel, BorderLayout.SOUTH);

Jpanel.add(panel,BorderLayout.CENTER);

this.add(Jpanel);

}

private void initFrame(){

this.setTitle("聊天室-用戶端");

this.setSize(640,480);

this.setLocationRelativeTo(null);

Toolkit kit = Toolkit.getDefaultToolkit();

Image img = kit.getImage("img/logo.jpg");

this.setIconImage(img);

this.setResizable(false);

opening();

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

closing();

}

public class ClientThread extends Thread{

@Override

public void run() {

String message=null;

while(true){

try {

message = dis.readUTF();

if(message.contains("@線上使用者清單@")){

userstr = message.split(" ");

if(userstr.length!=usersLength){

userlist.setText("");

for(int i=0;i

userlist.append(userstr[i]);

userlist.append("n");

}

usersLength = userstr.length;

}

}else{

chatRecords.append("n");

chatRecords.append(message);

chatRecords.setCaretPosition(chatRecords.getDocument().getLength());

}

} catch (UnknownHostException e) {

e.printStackTrace();

} catch (IOException e) {

if(isConnect==true)

JOptionPane.showMessageDialog(null, "伺服器斷開連接配接","錯誤",JOptionPane.ERROR_MESSAGE);

link.setEnabled(true);

discon.setEnabled(false);

isConnect = false;

port.setEditable(true);

IP.setEditable(true);

userName.setEditable(true);

userlist.setText("");

userstr=null;

usersLength=0;

try {

dis.close();

dos.close();

socket.close();

ct.stop();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

e.printStackTrace();

}

}

}

}

public void send(){

if(isConnect==false){

JOptionPane.showMessageDialog(null, "未連接配接伺服器，無法發送消息","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

if(message.getText().trim().equals("")){

JOptionPane.showMessageDialog(null, "消息不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

String str = message.getText();

sendMessage(str);

}

public void sendMessage(String str){

try {

dos.writeUTF(userName.getText()+"： "+str);

} catch (IOException e) {

e.printStackTrace();

}

message.setText("");

}

public void opening(){

Properties p = new Properties();

try {

if(new File("src/FontClient.properties").exists()){

p.load(new FileReader("src/FontClient.properties"));

myfont = new Font(p.getProperty("FontName"),Integer.parseInt(p.getProperty("FontStyle")),Integer.parseInt(p.getProperty("FontSize")));

chatRecords.setFont(myfont);

chatRecords.setForeground(new Color(Integer.parseInt(p.getProperty("foreColor"))));

chatRecords.setBackground(new Color(Integer.parseInt(p.getProperty("backColor"))));

}

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public void closing(){

this.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

if(isConnect == true){

try {

dos.writeUTF(userName.getText()+" 離開了聊天室");

dis.close();

dos.close();

socket.close();

ct.stop();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

Properties size = new Properties();

size.setProperty("FontName", ChatRoomClientFrame.this.chatRecords.getFont().getFamily());

size.setProperty("FontStyle", ChatRoomClientFrame.this.chatRecords.getFont().getStyle()+"");

size.setProperty("FontSize", ChatRoomClientFrame.this.chatRecords.getFont().getSize()+"");

size.setProperty("foreColor", ChatRoomClientFrame.this.chatRecords.getForeground().getRGB()+"");

size.setProperty("backColor", ChatRoomClientFrame.this.chatRecords.getBackground().getRGB()+"");

try {

FileWriter fr = new FileWriter("src/FontClient.properties");

size.store(fr, "FontClient Info");

fr.close();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

}

}伺服器端界面：

package Test;

import UI.ChatRoomServerFrame;

public class ChatRoomServer {

public static void main(String[] args) {

new ChatRoomServerFrame().setVisible(true);

}

}伺服器端實作：

package UI;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FileDialog;

import java.awt.Font;

import java.awt.Image;

import java.awt.Toolkit;

import java.awt.TrayIcon.MessageType;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.net.BindException;

import java.net.InetAddress;

import java.net.ServerSocket;

import java.net.Socket;

import java.net.UnknownHostException;

import java.util.ArrayList;

import java.util.Properties;

import java.util.Vector;

import javax.swing.JButton;

import javax.swing.JColorChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JSplitPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.border.TitledBorder;

import javax.swing.event.AncestorEvent;

import javax.swing.event.AncestorListener;

public class ChatRoomServerFrame extends JFrame{

private static final long serialVersionUID = -6582389471265865971L;

private JPanel panel;

private JPanel northPanel;

private JPanel southPanel;

private JTextField IP;

private JTextField port;

private JTextArea userlist;

private JTextArea chatRecords;

private JScrollPane leftPanel;

private JScrollPane rightPanel;

private JSplitPane centerPanel;

private JTextField message;

private JButton start;

private JButton stop;

private JButton send;

private JPanel Jpanel;

private JMenuBar bar;

private JMenu file;

private JMenuItem save;

private JMenu format;

private JMenuItem font;

private JMenuItem foreGround;

private JMenuItem backGround;

private Font myfont;

private Vector lists=new Vector();

private ServerSocket serverSocket;

private ServerThread st;

private DataOutputStream dos;

private DataInputStream dis;

private ArrayList users = new ArrayList();

private int usersLength = 0;

private UserList ul;

private String usermessage=null;

private boolean isStart = false;

public ChatRoomServerFrame(){

initServer();

start.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

try {

if(port.getText().trim().equals("")){

JOptionPane.showMessageDialog(null, "端口号不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

if(isStart==false){

serverSocket = new ServerSocket(Integer.parseInt(port.getText()));

chatRecords.append("n");

chatRecords.append("伺服器已開啟");

st = new ServerThread(serverSocket);

st.start();

port.setEditable(false);

start.setEnabled(false);

stop.setEnabled(true);

isStart = true;

ul = new UserList();

ul.start();

}

} catch (NumberFormatException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

stop.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

try {

chatRecords.append("n");

chatRecords.append("伺服器已斷開");

chatRecords.setCaretPosition(chatRecords.getDocument().getLength());

if(dis != null){

dis.close();

}

if(dos != null){

dos.close();

}

users.removeAll(users);

userlist.setText("");

usersLength=0;

serverSocket.close();

port.setEditable(true);

start.setEnabled(true);

stop.setEnabled(false);

isStart = false;

ul.stop();

st.stop();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

send.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

if(lists.size()==0){

JOptionPane.showMessageDialog(null, "目前沒有使用者線上","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

if(message.getText().trim().equals("")){

JOptionPane.showMessageDialog(null, "消息不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

String line="伺服器："+message.getText();

sendMessage(line);

message.setText("");

}

});

message.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

if(lists.size()==0){

JOptionPane.showMessageDialog(null, "目前沒有使用者線上","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

if(message.getText().trim().equals("")){

JOptionPane.showMessageDialog(null, "消息不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

String line="伺服器："+message.getText();

sendMessage(line);

message.setText("");

}

});

font.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

MyFontChooser mf = new MyFontChooser(chatRecords.getFont());

int returnValue = mf.showFontDialog(ChatRoomServerFrame.this);

// 如果按下的是确定按鈕

if (returnValue == MyFontChooser.APPROVE_OPTION) {

// 擷取選擇的字型

Font font = mf.getSelectFont();

// 将字型設定到JTextArea中

chatRecords.setFont(font);

}

}

});

save.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

FileDialog saveFile = new FileDialog(ChatRoomServerFrame.this, "儲存檔案...", FileDialog.SAVE);

saveFile.setVisible(true);

String filePath = saveFile.getDirectory() + saveFile.getFile();

try {

FileOutputStream fos = new FileOutputStream(filePath);

fos.write(chatRecords.getText().getBytes());

fos.close();

} catch (FileNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

backGround.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Color bc = JColorChooser.showDialog(ChatRoomServerFrame.this, "選擇顔色", Color.BLACK);

chatRecords.setBackground(bc);

}

});

foreGround.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Color fc = JColorChooser.showDialog(ChatRoomServerFrame.this, "選擇顔色", Color.BLACK);

chatRecords.setForeground(fc);

}

});

initFrame();

}

private void initServer() {

Jpanel = new JPanel();

Jpanel.setLayout(new BorderLayout());

panel = new JPanel();

panel.setLayout(new BorderLayout());

northPanel = new JPanel();

northPanel.setBorder(new TitledBorder("配置資訊"));

IP = new JTextField(15);

String ipAddress = null;

try {

ipAddress = InetAddress.getLocalHost().getHostAddress();

} catch (UnknownHostException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

IP.setText(ipAddress);

IP.setEditable(false);

port = new JTextField(15);

port.setText("8088");

start = new JButton("啟動");

stop = new JButton("停止");

stop.setEnabled(false);

northPanel.add(new JLabel("本地位址"));

northPanel.add(IP);

northPanel.add(new JLabel("端口号"));

northPanel.add(port);

northPanel.add(start);

northPanel.add(stop);

bar = new JMenuBar();

file = new JMenu("記錄");

save = new JMenuItem("儲存");

format = new JMenu("格式");

font = new JMenuItem("字型");

foreGround = new JMenuItem("前景色");

backGround = new JMenuItem("背景色");

file.add(save);

format.add(font);

format.add(foreGround);

format.add(backGround);

bar.add(file);

bar.add(format);

Jpanel.add(bar,BorderLayout.NORTH);

panel.add(northPanel,BorderLayout.NORTH);

userlist = new JTextArea();

userlist.setEditable(false);

leftPanel =new JScrollPane(userlist);

leftPanel.setBorder(new TitledBorder("線上使用者"));

panel.add(leftPanel,BorderLayout.EAST);

chatRecords = new JTextArea();

chatRecords.setEditable(false);

rightPanel =new JScrollPane(chatRecords);

rightPanel.setBorder(new TitledBorder("聊天資訊"));

centerPanel = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftPanel, rightPanel);

centerPanel.setDividerLocation(100);

panel.add(centerPanel,BorderLayout.CENTER);

southPanel = new JPanel();

southPanel.setBorder(new TitledBorder("寫消息"));

message = new JTextField(50);

send = new JButton("發送");

southPanel.add(message);

southPanel.add(send);

panel.add(southPanel, BorderLayout.SOUTH);

Jpanel.add(panel, BorderLayout.CENTER);

this.add(Jpanel);

}

private void initFrame(){

this.setTitle("聊天室-伺服器");

this.setSize(640,480);

this.setLocationRelativeTo(null);

Toolkit kit = Toolkit.getDefaultToolkit();

Image img = kit.getImage("img/logo.jpg");

this.setIconImage(img);

this.setResizable(false);

opening();

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

closing();

}

private class MSThread implements Runnable{

private Socket socket;

private DataInputStream dis ;

public MSThread(Socket socket) {

try {

this.socket = socket;

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

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

@Override

public void run() {

String message=null;

try {

while(true){

message = dis.readUTF();

if(message.contains("進入了聊天室")&&!message.contains("："))

users.add(message.split(" ")[0]);

if(message.contains("離開了聊天室")&&!message.contains("：")){

users.remove(message.split(" ")[0]);

sendMessage(message);

dis.close();

socket.close();

lists.remove(socket);

}else{

sendMessage(message);

}

}

} catch (IOException e) {

lists.remove(socket);

e.printStackTrace();

}

}

}

public void sendMessage(String str){

try {

for(int i=0;i

dos = new DataOutputStream(lists.get(i).getOutputStream());

dos.writeUTF(str);

}

}catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println(str);

chatRecords.append("n");

chatRecords.append(str);

chatRecords.setCaretPosition(chatRecords.getDocument().getLength());

}

public void sendUserMessage(String str){

try {

for(int i=0;i

dos = new DataOutputStream(lists.get(i).getOutputStream());

dos.writeUTF(str);

}

}catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

private class ServerThread extends Thread{

private ServerSocket serverSocket;

public ServerThread(ServerSocket serverSocket){

this.serverSocket = serverSocket;

}

@Override

public void run() {

while(true)

{

Socket soket=null;

try {

soket=serverSocket.accept();

new Thread(new MSThread(soket)).start();

lists.add(soket);

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

public void opening(){

Properties p = new Properties();

try {

if(new File("src/FontServer.properties").exists()){

p.load(new FileReader("src/FontServer.properties"));

myfont = new Font(p.getProperty("FontName"),Integer.parseInt(p.getProperty("FontStyle")),Integer.parseInt(p.getProperty("FontSize")));

chatRecords.setFont(myfont);

chatRecords.setForeground(new Color(Integer.parseInt(p.getProperty("foreColor"))));

chatRecords.setBackground(new Color(Integer.parseInt(p.getProperty("backColor"))));

}

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public void closing(){

this.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

Properties size = new Properties();

size.setProperty("FontName", ChatRoomServerFrame.this.chatRecords.getFont().getFamily());

size.setProperty("FontStyle", ChatRoomServerFrame.this.chatRecords.getFont().getStyle()+"");

size.setProperty("FontSize", ChatRoomServerFrame.this.chatRecords.getFont().getSize()+"");

size.setProperty("foreColor", ChatRoomServerFrame.this.chatRecords.getForeground().getRGB()+"");

size.setProperty("backColor", ChatRoomServerFrame.this.chatRecords.getBackground().getRGB()+"");

try {

FileWriter fr = new FileWriter("src/FontServer.properties");

size.store(fr, "FontServer Info");

fr.close();

if(isStart == true){

if(dis != null){

dis.close();

}

if(dos != null){

dos.close();

}

serverSocket.close();

ul.stop();

st.stop();

}

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

});

}

public class UserList extends Thread{

@Override

public void run() {

while(true){

if(users.size()!=usersLength){

userlist.setText("");

usermessage="";

for(String s : users){

userlist.append(s);

userlist.append("n");

usermessage=usermessage+s+" ";

}

usersLength = users.size();

sendUserMessage(usermessage+"@線上使用者清單@");

}

}

}

}

}字型選擇器：

package UI;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.GraphicsEnvironment;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import javax.swing.BorderFactory;

import javax.swing.Box;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JDialog;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JScrollPane;

import javax.swing.JTextField;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

import javax.swing.text.AttributeSet;

import javax.swing.text.BadLocationException;

import javax.swing.text.Document;

import javax.swing.text.PlainDocument;

public class MyFontChooser extends JDialog {

private static final long serialVersionUID = 7329415273324558584L;

public static final int CANCEL_OPTION = 0;

public static final int APPROVE_OPTION = 1;

private static final String CHINA_STRING = "神馬都是浮雲！";

private static final String ENGLISH_STRING = "Hello Kitty！";

private static final String NUMBER_STRING = "0123456789";

// 預設字型，也是将來要傳回的字型

private Font font = null;

// 字型選擇器元件容器

private Box box = null;

// 字型文本框

private JTextField fontText = null;

// 樣式文本框

private JTextField styleText = null;

// 文字大小文本框

private JTextField sizeText = null;

// 預覽文本框

private JTextField previewText = null;

// 中文預覽

private JRadioButton chinaButton = null;

// 英文預覽

private JRadioButton englishButton = null;

// 數字預覽

private JRadioButton numberButton = null;

// 字型選擇框

private JList fontList = null;

// 樣式選擇器

private JList styleList = null;

// 文字大小選擇器

private JList sizeList = null;

// 确定按鈕

private JButton approveButton = null;

// 取消按鈕

private JButton cancelButton = null;

// 所有字型

private String [] fontArray = null;

// 所有樣式

private String [] styleArray = {"正常", "粗體", "斜體", "粗斜體"};

// 所有預設字型大小

private String [] sizeArray = {"8", "9", "10", "11", "12", "14", "16", "18", "20", "22", "24", "26", "28", "36", "48", "初号", "小初", "一号", "小一", "二号", "小二", "三号", "小三", "四号", "小四", "五号", "小五", "六号", "小六", "七号", "八号"};

// 上面數組中對應的字型大小

private int [] sizeIntArray = {8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 36, 48, 42, 36, 26, 24, 22, 18, 16, 15, 14, 12, 10, 9, 8, 7, 6, 5};

// 傳回的數值，預設取消

private int returnValue = CANCEL_OPTION;

public MyFontChooser(Font font){

setTitle("字型選擇器");

this.font = font;

// 初始化UI元件

init();

// 添加監聽器

addListener();

// 按照預設字型顯示

setup();

// 基本設定

setModal(true);

setResizable(false);

// 自适應大小

pack();

}

private void init(){

// 獲得系統字型

GraphicsEnvironment eq = GraphicsEnvironment.getLocalGraphicsEnvironment();

fontArray = eq.getAvailableFontFamilyNames();

// 主容器

box = Box.createVerticalBox();

box.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));

fontText = new JTextField();

fontText.setEditable(false);

fontText.setBackground(Color.WHITE);

styleText = new JTextField();

styleText.setEditable(false);

styleText.setBackground(Color.WHITE);

sizeText = new JTextField("12");

// 給文字大小文本框使用的Document文檔，制定了一些輸入字元的規則

Document doc = new PlainDocument(){

public void insertString(int offs, String str, AttributeSet a)

throws BadLocationException {

if (str == null) {

return;

}

if (getLength() >= 3) {

return;

}

if (!str.matches("[0-9]+") && !str.equals("初号") && !str.equals("小初") && !str.equals("一号") && !str.equals("小一") && !str.equals("二号") && !str.equals("小二") && !str.equals("三号") && !str.equals("小三") && !str.equals("四号") && !str.equals("小四") && !str.equals("五号") && !str.equals("小五") && !str.equals("六号") && !str.equals("小六") && !str.equals("七号") && !str.equals("八号")) {

return;

}

super.insertString(offs, str, a);

sizeList.setSelectedValue(sizeText.getText(), true);

}

};

sizeText.setDocument(doc);

previewText = new JTextField(20);

previewText.setHorizontalAlignment(JTextField.CENTER);

previewText.setEditable(false);

previewText.setBackground(Color.WHITE);

chinaButton = new JRadioButton("中文預覽", true);

englishButton = new JRadioButton("英文預覽");

numberButton = new JRadioButton("數字預覽");

ButtonGroup bg = new ButtonGroup();

bg.add(chinaButton);

bg.add(englishButton);

bg.add(numberButton);

fontList = new JList(fontArray);

styleList = new JList(styleArray);

sizeList = new JList(sizeArray);

approveButton = new JButton("确定");

cancelButton = new JButton("取消");

Box box1 = Box.createHorizontalBox();

JLabel l1 = new JLabel("字型:");

JLabel l2 = new JLabel("字形:");

JLabel l3 = new JLabel("大小:");

l1.setPreferredSize(new Dimension(165, 14));

l1.setMaximumSize(new Dimension(165, 14));

l1.setMinimumSize(new Dimension(165, 14));

l2.setPreferredSize(new Dimension(95, 14));

l2.setMaximumSize(new Dimension(95, 14));

l2.setMinimumSize(new Dimension(95, 14));

l3.setPreferredSize(new Dimension(80, 14));

l3.setMaximumSize(new Dimension(80, 14));

l3.setMinimumSize(new Dimension(80, 14));

box1.add(l1);

box1.add(l2);

box1.add(l3);

Box box2 = Box.createHorizontalBox();

fontText.setPreferredSize(new Dimension(160, 25));

fontText.setMaximumSize(new Dimension(160, 25));

fontText.setMinimumSize(new Dimension(160, 25));

box2.add(fontText);

box2.add(Box.createHorizontalStrut(5));

styleText.setPreferredSize(new Dimension(90, 25));

styleText.setMaximumSize(new Dimension(90, 25));

styleText.setMinimumSize(new Dimension(90, 25));

box2.add(styleText);

box2.add(Box.createHorizontalStrut(5));

sizeText.setPreferredSize(new Dimension(80, 25));

sizeText.setMaximumSize(new Dimension(80, 25));

sizeText.setMinimumSize(new Dimension(80, 25));

box2.add(sizeText);

Box box3 = Box.createHorizontalBox();

JScrollPane sp1 = new JScrollPane(fontList);

sp1.setPreferredSize(new Dimension(160, 100));

sp1.setMaximumSize(new Dimension(160, 100));

sp1.setMaximumSize(new Dimension(160, 100));

box3.add(sp1);

box3.add(Box.createHorizontalStrut(5));

JScrollPane sp2 = new JScrollPane(styleList);

sp2.setPreferredSize(new Dimension(90, 100));

sp2.setMaximumSize(new Dimension(90, 100));

sp2.setMinimumSize(new Dimension(90, 100));

box3.add(sp2);

box3.add(Box.createHorizontalStrut(5));

JScrollPane sp3 = new JScrollPane(sizeList);

sp3.setPreferredSize(new Dimension(80, 100));

sp3.setMaximumSize(new Dimension(80, 100));

sp3.setMinimumSize(new Dimension(80, 100));

box3.add(sp3);

Box box4 = Box.createHorizontalBox();

Box box5 = Box.createVerticalBox();

JPanel box6 = new JPanel(new BorderLayout());

box5.setBorder(BorderFactory.createTitledBorder("字元集"));

box6.setBorder(BorderFactory.createTitledBorder("示例"));

box5.add(chinaButton);

box5.add(englishButton);

box5.add(numberButton);

box5.setPreferredSize(new Dimension(90, 95));

box5.setMaximumSize(new Dimension(90, 95));

box5.setMinimumSize(new Dimension(90, 95));

box6.add(previewText);

box6.setPreferredSize(new Dimension(250, 95));

box6.setMaximumSize(new Dimension(250, 95));

box6.setMinimumSize(new Dimension(250, 95));

box4.add(box5);

box4.add(Box.createHorizontalStrut(4));

box4.add(box6);

Box box7 = Box.createHorizontalBox();

box7.add(Box.createHorizontalGlue());

box7.add(approveButton);

box7.add(Box.createHorizontalStrut(5));

box7.add(cancelButton);

box.add(box1);

box.add(box2);

box.add(box3);

box.add(Box.createVerticalStrut(5));

box.add(box4);

box.add(Box.createVerticalStrut(5));

box.add(box7);

getContentPane().add(box);

}

private void setup() {

String fontName = font.getFamily();

int fontStyle = font.getStyle();

int fontSize = font.getSize();

boolean b = false;

for (int i = 0; i < sizeArray.length; i++) {

if (sizeArray[i].equals(String.valueOf(fontSize))) {

b = true;

break;

}

}

if(b){

// 選擇文字大小清單中的某項

sizeList.setSelectedValue(String.valueOf(fontSize), true);

}else{

sizeText.setText(String.valueOf(fontSize));

}

// 選擇字型清單中的某項

fontList.setSelectedValue(fontName, true);

// 選擇樣式清單中的某項

styleList.setSelectedIndex(fontStyle);

// 預覽預設顯示中文字元

chinaButton.doClick();

// 顯示預覽

setPreview();

}

private void addListener() {

sizeText.addFocusListener(new FocusListener() {

public void focusLost(FocusEvent e) {

setPreview();

}

public void focusGained(FocusEvent e) {

sizeText.selectAll();

}

});

// 字型清單發生選擇事件的監聽器

fontList.addListSelectionListener(new ListSelectionListener() {

public void valueChanged(ListSelectionEvent e) {

if (!e.getValueIsAdjusting()) {

fontText.setText(String.valueOf(fontList.getSelectedValue()));

// 設定預覽

setPreview();

}

}

});

styleList.addListSelectionListener(new ListSelectionListener() {

public void valueChanged(ListSelectionEvent e) {

if (!e.getValueIsAdjusting()) {

styleText.setText(String.valueOf(styleList.getSelectedValue()));

// 設定預覽

setPreview();

}

}

});

sizeList.addListSelectionListener(new ListSelectionListener() {

public void valueChanged(ListSelectionEvent e) {

if (!e.getValueIsAdjusting()) {

if(!sizeText.isFocusOwner()){

sizeText.setText(String.valueOf(sizeList.getSelectedValue()));

}

// 設定預覽

setPreview();

}

}

});

// 編碼監聽器

EncodeAction ea = new EncodeAction();

chinaButton.addActionListener(ea);

englishButton.addActionListener(ea);

numberButton.addActionListener(ea);

// 确定按鈕的事件監聽

approveButton.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

// 組合字型

font = groupFont();

// 設定傳回值

returnValue = APPROVE_OPTION;

// 關閉視窗

disposeDialog();

}

});

// 取消按鈕事件監聽

cancelButton.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

disposeDialog();

}

});

}

public final int showFontDialog(JFrame owner) {

setLocationRelativeTo(owner);

setVisible(true);

return returnValue;

}

public final Font getSelectFont() {

return font;

}

private void disposeDialog() {

MyFontChooser.this.removeAll();

MyFontChooser.this.dispose();

}

private void showErrorDialog(String errorMessage) {

JOptionPane.showMessageDialog(this, errorMessage, "錯誤", JOptionPane.ERROR_MESSAGE);

}

private void setPreview() {

Font f = groupFont();

previewText.setFont(f);

}

private Font groupFont() {

String fontName = fontText.getText();

int fontStyle = styleList.getSelectedIndex();

String sizeStr = sizeText.getText().trim();

// 如果沒有輸入

if(sizeStr.length() == 0) {

showErrorDialog("字型(大小)必須是有效“數值！");

return null;

}

int fontSize = 0;

// 通過循環對比文字大小輸入是否在現有清單内

for (int i = 0; i < sizeArray.length; i++) {

if(sizeStr.equals(sizeArray[i])){

fontSize = sizeIntArray[i];

break;

}

}

// 沒有在清單内

if (fontSize == 0) {

try{

fontSize = Integer.parseInt(sizeStr);

if(fontSize < 1){

showErrorDialog("字型(大小)必須是有效“數值”！");

return null;

}

}catch (NumberFormatException nfe) {

showErrorDialog("字型(大小)必須是有效“數值”！");

return null;

}

}

return new Font(fontName, fontStyle, fontSize);

}

class EncodeAction implements ActionListener {

public void actionPerformed(ActionEvent e) {

if (e.getSource().equals(chinaButton)) {

previewText.setText(CHINA_STRING);

} else if (e.getSource().equals(englishButton)) {

previewText.setText(ENGLISH_STRING);

} else {

previewText.setText(NUMBER_STRING);

}

}

}

}