小编给大家分享一下JavaGUI如何模仿实现QQ聊天功能，希望大家阅读完这篇文章之后都有所收获，下面让我们一起去探讨吧！
具体内容如下
ClientForm代码：
package GUISocket.chat.Client; import javax.swing.JFrame; import javax.swing.JPanel; import java.awt.EventQueue; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JTextField; import javax.swing.DefaultListModel; import javax.swing.JButton; import javax.swing.JTextArea; import javax.swing.JScrollPane; import javax.swing.ScrollPaneConstants; import javax.swing.border.EmptyBorder; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; public class ClientForm extends JFrame { private JPanel contentPane; DefaultListModel<String> itemUsers; private JTextField textIP; private JTextField textPort; public JTextField textUser; public JTextArea textLog; public JList listUser; public JTextArea textSend ; public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { ClientForm frame = new ClientForm(); frame.setVisible(true); ClientMG.getClientMG().setClientForm(frame); } catch (Exception e) { e.printStackTrace(); } } }); } public ClientForm() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 589, 607); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); JLabel label = new JLabel("配置信息"); label.setBounds(10, 10, 54, 15); contentPane.add(label); JLabel lblIp = new JLabel("IP"); lblIp.setBounds(10, 35, 27, 15); contentPane.add(lblIp); textIP = new JTextField(); textIP.setText("192.168.1.2"); textIP.setBounds(33, 35, 92, 21); contentPane.add(textIP); textIP.setColumns(10); JLabel label_1 = new JLabel("端口"); label_1.setBounds(137, 35, 38, 15); contentPane.add(label_1); textPort = new JTextField(); textPort.setText("8900"); textPort.setBounds(168, 32, 66, 21); contentPane.add(textPort); textPort.setColumns(10); JLabel label_2 = new JLabel("用户名"); label_2.setBounds(255, 38, 54, 15); contentPane.add(label_2); textUser = new JTextField(); textUser.setBounds(302, 35, 66, 21); contentPane.add(textUser); textUser.setColumns(10); JButton LOGIN = new JButton("登录"); LOGIN.setBounds(395, 34, 66, 23); contentPane.add(LOGIN); JButton btnClose = new JButton("关闭"); btnClose.addActionListener(new BtnCloseActionListener()); btnClose.setBounds(480, 31, 71, 23); contentPane.add(btnClose); JPanel panel = new JPanel(); panel.setBounds(0, 10, 573, 61); contentPane.add(panel); panel.setLayout(null); JPanel panel_1 = new JPanel(); panel_1.setBounds(0, 81, 573, 369); contentPane.add(panel_1); panel_1.setLayout(null); JLabel label_3 = new JLabel("聊天记录"); label_3.setBounds(10, 10, 54, 15); panel_1.add(label_3); JScrollPane scrollPane = new JScrollPane(); scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER); scrollPane.setBounds(20, 35, 323, 324); panel_1.add(scrollPane); textLog = new JTextArea(); textLog.setWrapStyleWord(true); textLog.setLineWrap(true); scrollPane.setViewportView(textLog); JLabel label_4 = new JLabel("在线用户"); label_4.setBounds(351, 10, 54, 15); panel_1.add(label_4); JScrollPane scrollPane_1 = new JScrollPane(); scrollPane_1.setBounds(353, 35, 210, 324); panel_1.add(scrollPane_1); this.itemUsers=new DefaultListModel<String>(); this.listUser=new JList(itemUsers); scrollPane_1.setViewportView(this.listUser); JPanel panel_2 = new JPanel(); panel_2.setBounds(10, 449, 553, 119); contentPane.add(panel_2); panel_2.setLayout(null); JLabel label_5 = new JLabel("操作"); label_5.setBounds(10, 10, 54, 15); panel_2.add(label_5); JScrollPane scrollPane_2 = new JScrollPane(); scrollPane_2.setBounds(10, 22, 533, 64); panel_2.add(scrollPane_2); textSend = new JTextArea(); textSend.setWrapStyleWord(true); textSend.setLineWrap(true); scrollPane_2.setViewportView(textSend); JButton button_1 = new JButton("群发"); button_1.addActionListener(new Button_1ActionListener()); button_1.setBounds(307, 86, 93, 23); panel_2.add(button_1); JButton sendMG = new JButton("发送"); sendMG.addActionListener(new SendMGActionListener()); sendMG.setBounds(432, 86, 93, 23); panel_2.add(sendMG); LOGIN.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { //连接服务器user String IP=textIP.getText().trim(); int port=Integer.parseInt(textPort.getText().trim()); String user=textUser.getText().trim(); if(ClientMG.getClientMG().Connect(IP,port,user)) { ClientMG.getClientMG().setLogTxt("已经连接到服务器"); } else { ClientMG.getClientMG().setLogTxt("连接服务器失败"); } } }); } private class SendMGActionListener implements ActionListener { public void actionPerformed(ActionEvent e) { //发送信息 //1.获取选择的用户名称 //2.发送给服务器端含有接收用户信息的交互协议串 String SenderName=ClientMG.getClientMG().getClientThd().getName(); String RecName=listUser.getSelectedValue().toString(); String MSGinfo=textSend.getText().trim(); String sMsg="MSG|"+SenderName+"|"+RecName+"|"+MSGinfo; ClientMG.getClientMG().getClientThd().sendMsg(sMsg); //将消息内容显示到聊天记录中 //[发送者] //消息内容 //清空发送消息框 ClientMG.getClientMG().setLogTxt("[我]："); ClientMG.getClientMG().setLogTxt(MSGinfo); textSend.setText(""); } } private class Button_1ActionListener implements ActionListener { public void actionPerformed(ActionEvent e) { //群发信息 //1.获取选择的用户名称 //2.发送给服务器端含有接收用户信息的交互协议串 //发送到服务器，MSG|SenderName|RecName|MSGInfo String SenderName=ClientMG.getClientMG().getClientThd().getName(); String RecName="ALL"; String MSGinfo=textSend.getText().trim(); String sMsg="MSG|"+SenderName+"|"+RecName+"|"+MSGinfo; ClientMG.getClientMG().getClientThd().sendMsg(sMsg); //将消息内容显示到聊天记录中 //[发送者] //消息内容 //清空发送消息框 ClientMG.getClientMG().setLogTxt("[我]："); ClientMG.getClientMG().setLogTxt(MSGinfo); textSend.setText(""); } } private class BtnCloseActionListener implements ActionListener { public void actionPerformed(ActionEvent e) { //向服务器发送线下信息，OFFLINE|username String SenderName=ClientMG.getClientMG().getClientThd().getName(); String str="OFFLINE|"+SenderName; ClientMG.getClientMG().getClientThd().sendMsg(str); //清空在线用户列表 ClientMG.getClientMG().clearItem(); //消息记录中显示断开连接 ClientMG.getClientMG().setLogTxt("已经断开连接"); } } }ClientMG代码：
package GUISocket.chat.Client; import java.net.Socket; public class ClientMG { private static final ClientMG clientmg=new ClientMG(); private ClientMG() {} public static ClientMG getClientMG() { return clientmg; } private ClientForm clientWin; public void setClientForm(ClientForm c) { clientWin=c; } public void setLogTxt(String str) { clientWin.textLog.append(str+"\r\n"); } public void addItem(String user) { clientWin.itemUsers.addElement(user); } public void addItems(String[] users) { for(int i=0;i<users.length;i++) { clientWin.itemUsers.addElement(users[i]); } } //所有用户列表清空 public void clearItem() { clientWin.itemUsers.clear(); } //删除一个用户 public void removeItem(String str) { clientWin.itemUsers.removeElement(str); } SocketThread sthd; public boolean Connect(String IP,int port,String user) { Socket socket=null; try { socket=new Socket(IP,port); sthd=new SocketThread(socket, user); sthd.start(); return true; } catch (Exception e) { // TODO: handle exception e.printStackTrace(); return false; } } public SocketThread getClientThd() { return sthd; } }SocketThread代码：
package GUISocket.chat.Client; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; public class SocketThread extends Thread{ BufferedReader br=null; PrintWriter pw=null; Socket socket=null; public SocketThread(Socket socket,String user){ super(user);//登录时用的用户名 this.socket=socket; } public void run() { try { br=new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8")); pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(),"UTF-8"))); String sLOGIN="LOGIN|"+this.getName(); sendMsg(sLOGIN); String str=""; while((str=br.readLine())!=null) { String[] commands=str.split("\\|"); if(commands[0].equals("USERLISTS")) {//USERLISTS|user1_user2_user3 String[] sUsers=commands[1].split("\\_"); ClientMG.getClientMG().addItems(sUsers); } else if(commands[0].equals("ADD")) {//ADD|UserName String sNewUser=commands[1]; ClientMG.getClientMG().addItem(sNewUser); } else if(commands[0].equals("MSG")) {//格式 MSG|SenderName|MSGinfo String SenderName=commands[1]; String MSGinfo=commands[2]; //将消息内容显示到聊天记录中 //[发送者] //消息内容 ClientMG.getClientMG().setLogTxt("["+SenderName+"]"); ClientMG.getClientMG().setLogTxt(MSGinfo); } else if(commands[0].equals("DEL")) { //3.处理下线用户信息，DEL|username //删除用户列表中的username String sUser=commands[1]; ClientMG.getClientMG().removeItem(sUser); ClientMG.getClientMG().setLogTxt(sUser+"下线了。"); } else if(commands[0].equals("CLOSE")) { //CLOSE //1.处理CLOSE命令，界面显示服务器关闭 //2。清空在线用户列表 ClientMG.getClientMG().clearItem(); ClientMG.getClientMG().setLogTxt("服务器关闭"); //3.关闭ClientChat break; } //ClientMG.getClientMG().setLogTxt(str); } } catch (Exception e) { // TODO: handle exception e.printStackTrace(); }finally { try { if(pw!=null) pw.close(); if(br!=null) br.close(); if(socket!=null) socket.close(); } catch (Exception e2) { // TODO: handle exception } } } public void sendMsg(String str) { pw.println(str); pw.flush(); } }ServerForm代码：
package GUISocket.chat.Server; import javax.swing.JFrame; import javax.swing.JPanel; import java.awt.EventQueue; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.JButton; import javax.swing.JTextArea; import javax.swing.JScrollPane; import javax.swing.ScrollPaneConstants; import javax.swing.border.EmptyBorder; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; public class ServerForm extends JFrame { /** * */ private JPanel contentPane; public JTextArea textLog; private JTextField textPort; public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { ServerForm frame = new ServerForm(); frame.setVisible(true); ServerMG.getServerMG().setServerForm(frame); } catch (Exception e) { e.printStackTrace(); } } }); } public ServerForm() { setTitle("多人聊天服务器"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 510, 566); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); JLabel lblNewLabel = new JLabel("配置信息"); lblNewLabel.setBounds(20, 10, 54, 15); contentPane.add(lblNewLabel); JLabel label = new JLabel("端口:"); label.setBounds(30, 34, 39, 15); contentPane.add(label); textPort = new JTextField(); textPort.setText("8900"); textPort.setBounds(65, 31, 66, 21); contentPane.add(textPort); textPort.setColumns(10); JButton btnStart = new JButton("开启服务"); btnStart.addActionListener(new BtnStartActionListener()); btnStart.setBounds(180, 30, 93, 23); contentPane.add(btnStart); JButton btnClose = new JButton("关闭服务"); btnClose.addActionListener(new BtnCloseActionListener()); btnClose.setBounds(325, 30, 93, 23); contentPane.add(btnClose); JPanel panel = new JPanel(); panel.setBounds(10, 10, 474, 54); contentPane.add(panel); panel.setLayout(null); JLabel label_1 = new JLabel("消息记录"); label_1.setBounds(10, 94, 54, 15); contentPane.add(label_1); JPanel panel_1 = new JPanel(); panel_1.setBounds(0, 81, 474, 436); contentPane.add(panel_1); panel_1.setLayout(null); JScrollPane scrollPane = new JScrollPane(); scrollPane.setBounds(10, 41, 464, 368); panel_1.add(scrollPane); scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS); textLog = new JTextArea(); textLog.setLineWrap(true); textLog.setWrapStyleWord(true); scrollPane.setViewportView(textLog); } private class BtnCloseActionListener implements ActionListener { public void actionPerformed(ActionEvent e) { } } private class BtnStartActionListener implements ActionListener { public void actionPerformed(ActionEvent e) { //开启服务 int port=Integer.parseInt(textPort.getText().trim()); if(ServerMG.getServerMG().CreateServer(port)) { ServerMG.getServerMG().setLogTxt("服务器开启..."); } else { ServerMG.getServerMG().setLogTxt("服务器开启失败..."); } } } }ServerListener代码：
package GUISocket.chat.Server; import java.net.ServerSocket; import java.net.Socket; public class ServerListener extends Thread{ Socket socket=null; ServerSocket server=null; public ServerListener(ServerSocket server) { this.server=server; } public void run() { try { while(true) { socket=server.accept(); ServerMG.getServerMG().setLogTxt("客户端： "+socket); new SocketThread(socket).start(); } } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } }ServerMG代码：
package GUISocket.chat.Server; import java.net.ServerSocket; import java.net.Socket; import java.util.ArrayList; import javax.swing.JTextArea; public class ServerMG { private static final ServerMG servermg=new ServerMG(); private ServerMG() {} public static ServerMG getServerMG() { return servermg; } //主界面的操作 private ServerForm serverWin; //将窗体对象注册到管理类当中 public void setServerForm(ServerForm s) { serverWin=s; } //设置主界面 public void setLogTxt(String str) { serverWin.textLog.append(str+"\r\n"); } private ServerSocket server; public boolean CreateServer(int port) { try { server=new ServerSocket(port); new ServerListener(server).start(); return true; } catch (Exception e) { // TODO: handle exception e.printStackTrace(); return false; } } public void CloseServer() { try { //1.向所有在线用户发送关闭服务器的信息，CLOSE sendClosetoAll(); //2.遍历Arraylist将其中的每一个ServerChat关闭 closeAllThread(); //3.ArrayList要清空 clearList(); //4.关闭ServerListener //5.关闭ServerSocket server.close(); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } //ArrayList操作 ArrayList<SocketThread> a1OnlineList=new ArrayList<>();//存放所有和 public synchronized void addList(SocketThread sc) { //限制重名 a1OnlineList.add(sc); } public void clearList() { a1OnlineList.clear(); } public synchronized void removeList(SocketThread sc) { for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); if(s.equals(sc)) { a1OnlineList.remove(sc); break; } } } //信息的管理 public void getOnlineNames(SocketThread sc) { //非第1次登录时，得到所有的在线用户 if(a1OnlineList.size()>0) { String sUsers="";//给客户端，USERLISTS|user1_user2_user3 for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); sUsers+=s.getName()+"_"; } sc.sendMsg("USERLISTS|"+sUsers); } } public void sendNewUsertoAll(SocketThread sc) { for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); s.sendMsg("ADD|"+sc.getName()); } } //通过Mame用户名查找目标 public SocketThread getSocketThreadByName(String sName) { for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); if(s.getName().equals(sName)) { return s; } } return null; } //发送给所有人，但是要排除自身 public void sendMsgtoAll(String sMsg,SocketThread sc) { for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); if(!s.equals(sc)) { s.sendMsg(sMsg); } } } public void sendOfflieUsertoAll(SocketThread sc) { //向所有的其他在线用户发送用户下线信息，DE|username for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); if(!s.equals(sc)) { s.sendMsg("DEL|"+sc.getName()); } } } public void sendClosetoAll() { for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); s.sendMsg("CLOSE"); } } public void closeAllThread() { for(int i=0;i<a1OnlineList.size();i++) { SocketThread s=a1OnlineList.get(i); s.closeChat(); } } }SocketThread代码：
package GUISocket.chat.Server; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; public class SocketThread extends Thread{ BufferedReader br=null; PrintWriter pw=null; Socket socket=null; public SocketThread(Socket socket) { this.socket = socket; } public void run() { try { br=new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8")); pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(),"UTF-8"))); String str=""; while((str=br.readLine())!=null) {//循环响应客户的发送信息//接受客户端发过来的信息 String [] commands=str.split("\\|"); if(commands[0].equals("LOGIN")) {//解析登录请求，格式，LOGIN|UserName String sUSER=commands[1]; this.setName(sUSER);//将用户名信息放入Threadname中 //1.得到所有在线用户信息名称，发回客户端：USERLISTS|user1_user2_user3 ServerMG.getServerMG().getOnlineNames(this); //2.将当前登录用户的信息(用户名),发送给已经在线的其他用户，ADD|userName ServerMG.getServerMG().sendNewUsertoAll(this); //3.将当前登录的Socket信息放入ArrayList中 ServerMG.getServerMG().addList(this); } else if(commands[0].equals("MSG")) {//格式：MSG|SenderName|RecName|MSGoinfo String SenderName=commands[1]; String RecName=commands[2]; String MSGinfo=commands[3]; //群聊 if(RecName.equals("ALL")) { String sMsg="MSG!"+SenderName+"|"+MSGinfo;//格式：MSG|SenderName|MSGinfo ServerMG.getServerMG().sendMsgtoAll(sMsg,this); ServerMG.getServerMG().setLogTxt(SenderName+"发送信息["+MSGinfo+"]到所有人。"); } //私聊 else { //通过RecName用户名查找，找到目标SocketThread SocketThread sc=ServerMG.getServerMG().getSocketThreadByName(RecName); if(sc!=null) { //目标对象发送信息，MSG|SenderName|MSGinfo String sMsg="MSG!"+SenderName+"|"+MSGinfo; sc.sendMsg(sMsg); //写入信息日志 ServerMG.getServerMG().setLogTxt(SenderName+"发送信息["+MSGinfo+"]到"+RecName); } } } else if(commands[0].equals("OFFLINE")) { //1.创建OFFLINE String sUser=commands[1];//获取下线的用户名 //2.向所有的其他在线用户发送用户下线信息，DEL|username ServerMG.getServerMG().sendOfflieUsertoAll(this); //3.清除ArrayList中的当前用户信息()socketChat ServerMG.getServerMG().removeList(this); //用户下线需后要退出监听用的while循环 ServerMG.getServerMG().setLogTxt(sUser+"下线了"); break; } } } catch (Exception e) { e.printStackTrace(); }finally { try { if(pw!=null) pw.close(); if(br!=null) br.close(); if(socket!=null) socket.close(); } catch (Exception e2) { // TODO: handle exception } } } public void closeChat() { try { if(pw!=null) pw.close(); if(br!=null) br.close(); if(socket!=null) socket.close(); } catch (Exception e) { e.printStackTrace(); } } public void sendMsg(String str) { pw.println(str); pw.flush(); } }运行结果如下：
缺点：只能发单行信息，如发多行，需用到base4.
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