java在线聊天项目1.3版 ——设计好友列表框功能
Posted Advancing Swift
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设计好友列表框功能，思路——
1、当客户端成功登陆后，则客户端把成功登陆信息发送给服务端，
2、由服务端将接收到来自各个成功登陆的客户端的用户信息添加进好友列表，
3、每当有成功登陆的用户就向各个客户端发送完整好友列表
4、好友列表窗要一直死循环着等待接收服务端不断发来的好友列表信息
注意：登陆窗退出时不要关闭socket
聊天窗退出时不要关闭socket
重新整合服务端各种服务到server 类中，只要服务端一开，即可接收客户端的各种请求（登陆、注册、聊天等）
1.3版客户端代码做了登陆成功后释放自身，打开好友列表窗后，还要把成功登陆的信息发送给服务端功能
代码如下：
package com.swift.frame; import java.awt.EventQueue; 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.IOException; import java.net.ConnectException; import java.net.Socket; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.border.TitledBorder; import com.swift.util.Center; public class LoginDialog extends JDialog { private static final long serialVersionUID = 1L; private JPasswordField passwordField_2; private JPasswordField passwordField_1; private JTextField textField_2; private JTextField textField; String request = null; String response = null; Socket s; DataOutputStream dos; DataInputStream dis; public static void main(String args[]) { JFrame.setDefaultLookAndFeelDecorated(true); JDialog.setDefaultLookAndFeelDecorated(true); try { UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel"); } catch (ClassNotFoundException e1) { e1.printStackTrace(); } catch (InstantiationException e1) { e1.printStackTrace(); } catch (IllegalAccessException e1) { e1.printStackTrace(); } catch (UnsupportedLookAndFeelException e1) { e1.printStackTrace(); } EventQueue.invokeLater(new Runnable() { public void run() { try { LoginDialog dialog = new LoginDialog(); dialog.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); dialog.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } public LoginDialog() { super(); setResizable(false); setTitle("在线聊天登录框"); getContentPane().setLayout(null); setBounds(100, 100, 427, 301);// 注册时高度为578，不注册是301 // 设置窗口居中 this.setLocation(Center.getPoint(this.getSize())); final JTextField textField_1 = new JTextField(); textField_1.setBounds(148, 90, 192, 42); getContentPane().add(textField_1); final JLabel label = new JLabel(); label.setText("帐 号"); label.setBounds(76, 102, 66, 18); getContentPane().add(label); final JLabel label_1 = new JLabel(); label_1.setText("密 码"); label_1.setBounds(76, 167, 66, 18); getContentPane().add(label_1); final JPasswordField passwordField = new JPasswordField(); passwordField.setBounds(148, 155, 192, 42); getContentPane().add(passwordField); final JButton button_1 = new JButton(); button_1.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { String phone = new String(textField_1.getText()).trim(); String password = new String(passwordField.getPassword()).trim(); if (!phone.equals("") && !password.equals("")) { try { request = "login"; dos.writeUTF(request); response = dis.readUTF(); if (response.equals("login")) { dos.writeUTF(phone); dos.writeUTF(password); String flag=dis.readUTF(); if(flag.equals("success")) { javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "登录成功"); //把登陆成功的用户发送给服务端,作为好友列表信息 dos.writeUTF(phone); dos.flush(); //登陆窗消失 LoginDialog.this.dispose(); //好友列表窗出现 new FriendsFrame(phone,s); }else if(flag.equals("fail")) { javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "登录失败"); } } } catch (IOException e1) { e1.printStackTrace(); } } else { javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "用户名密码必须填写..."); return; } } }); button_1.setText("登录"); button_1.setBounds(230, 222, 106, 36); getContentPane().add(button_1); final JButton button = new JButton(); button.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { if (LoginDialog.this.getHeight() == 301) { LoginDialog.this.setSize(427, 578); } else { LoginDialog.this.setSize(427, 301); } // 设置窗口不断居中 LoginDialog.this.setLocation(Center.getPoint(LoginDialog.this.getSize())); } }); button.setText("注册"); button.setBounds(76, 222, 106, 36); getContentPane().add(button); final JPanel panel = new JPanel(); panel.setLayout(null); panel.setBorder(new TitledBorder(null, "注册用户", TitledBorder.DEFAULT_JUSTIFICATION, TitledBorder.DEFAULT_POSITION, null, null)); panel.setBounds(10, 278, 401, 226); getContentPane().add(panel); final JLabel label_2 = new JLabel(); label_2.setBounds(44, 41, 65, 18); label_2.setText("手机号："); panel.add(label_2); textField = new JTextField(); textField.setBounds(115, 35, 225, 30); panel.add(textField); final JButton button_2 = new JButton(); button_2.setText("发送验证"); button_2.setBounds(243, 75, 97, 30); panel.add(button_2); textField_2 = new JTextField(); textField_2.setBounds(115, 104, 95, 30); panel.add(textField_2); final JLabel label_3 = new JLabel(); label_3.setText("验证码："); label_3.setBounds(44, 110, 65, 18); panel.add(label_3); passwordField_1 = new JPasswordField(); passwordField_1.setBounds(115, 143, 231, 30); panel.add(passwordField_1); passwordField_2 = new JPasswordField(); passwordField_2.setBounds(115, 175, 231, 30); panel.add(passwordField_2); final JLabel label_4 = new JLabel(); label_4.setText("密 码："); label_4.setBounds(44, 149, 65, 18); panel.add(label_4); final JLabel label_5 = new JLabel(); label_5.setText("验证密码："); label_5.setBounds(44, 181, 65, 18); panel.add(label_5); final JButton button_3 = new JButton(); button_3.setBounds(47, 510, 97, 30); getContentPane().add(button_3); button_3.setText("放弃"); final JButton button_4 = new JButton(); button_4.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { String phone = textField.getText(); String password = null; String str1 = new String(passwordField_1.getPassword()).trim(); String str2 = new String(passwordField_2.getPassword()).trim(); if (!phone.equals("") && !str1.equals("") && !str2.equals("")) { if (str1.equals(str2)) { password = new String(passwordField_2.getPassword()).trim(); try { request = "reg"; dos.writeUTF(request); String response = dis.readUTF(); if (response.equals("reg")) { dos.writeUTF(phone); dos.writeUTF(password); } javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "注册成功..."); } catch (IOException e1) { e1.printStackTrace(); } } else { javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "输入密码不一致..."); System.out.println("输入密码不一致..."); passwordField_1.setText(""); passwordField_2.setText(""); } } else { javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "用户名密码必须填写..."); return; } } }); button_4.setBounds(262, 510, 97, 30); getContentPane().add(button_4); button_4.setText("注册用户"); connect(); } public void connect() { try { s = new Socket("127.0.0.1", 8888);//以本机做server System.out.println("一个客户端登陆中....!"); dos = new DataOutputStream(s.getOutputStream()); dis = new DataInputStream(s.getInputStream()); } catch (ConnectException e) { System.out.println("服务端异常........."); System.out.println("请确认服务端是否开启........."); } catch (IOException e) { e.printStackTrace(); } } }
1.3版服务端新增好友列表Vector集合，以及每当有成功登陆的用户就向各个客户端发送完整列表的功能
代码如下：
package com.swift.server; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.EOFException; import java.io.IOException; import java.net.BindException; import java.net.ServerSocket; import java.net.Socket; import java.net.SocketException; import java.util.ArrayList; import java.util.List; import java.util.Vector; import com.swift.jdbc.DBAdd; import com.swift.jdbc.DBLogin; import com.swift.other.User; public class Server { boolean started = false; ServerSocket ss = null; Socket s = null; String request = null; String response = null; List<Client> clients = new ArrayList<Client>(); Vector<String> list = new Vector<String>(); public static void main(String[] args) { new Server().fun(); } private void fun() { try { ss = new ServerSocket(8888); started = true; } catch (BindException e) { System.out.println("端口使用中......"); } catch (IOException e1) { e1.printStackTrace(); } try { while (started) { s = ss.accept(); System.out.println("a client connected success"); Client c = new Client(s); clients.add(c); new Thread(c).start(); } } catch (EOFException e) { System.out.println("client has closed."); } catch (Exception e) { e.printStackTrace(); } finally { try { ss.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } class Client implements Runnable { public Socket s; public DataInputStream dis; public DataOutputStream dos; private boolean connected = false; public Client(Socket s) { this.s = s; try { this.dis = new DataInputStream(s.getInputStream()); this.dos = new DataOutputStream(s.getOutputStream()); connected = true; } catch (IOException e) { e.printStackTrace(); } } @Override public void run() { try { while (connected) { // 接收客户端请求 request = dis.readUTF(); // 发回对此请求的响应 response = request; dos.writeUTF(response); dos.flush(); if (request.equals("login")) { String phone = dis.readUTF(); String password = dis.readUTF(); System.out.println(phone); System.out.println(password); User user = new User(phone, password); boolean login = DBLogin.login(user); if (login) { dos.writeUTF("success"); dos.flush(); String userName=dis.readUTF(); //添加进好友列表Vector list.addElement(userName); System.out.println(); //每当有成功登陆就向各个客户端发送完整列表 for (int i = 0; i < clients.size(); i++) { Client c = clients.get(i); System.out.println(c.s.getPort()); for (int j = 0; j < list.size(); j++) { String name = list.get(j); System.out.println(name); c.send(name); } } } else { dos.writeUTF("fail"); dos.flush(); } } else if (request.equals("reg")) { String phone = dis.readUTF(); String password = dis.readUTF(); System.out.println(phone); System.out.println(password); User user = new User(phone, password); DBAdd.add(user); } else if (request.equals("chat")) { String str = dis.readUTF(); System.out.println(str); for (int i = 0; i < clients.size(); i++) { Client c = clients.get(i); c.send(str); } } } } catch (SocketException e) { System.out.println("一个登陆窗已经关闭...."); } catch (EOFException e) { System.out.println("a client has been closed,can\'t read message from it."); } catch (IOException e) { e.printStackTrace(); } finally { if (s != null) { try { s.close(); } catch (IOException e) { e.printStackTrace(); } } if (dis != null) { try { dis.close(); } catch (IOException e) { e.printStackTrace(); } } if (dos != null) { try { dos.close(); } catch (IOException e) { e.printStackTrace(); } } } } private void send(String str) { try { this.dos.writeUTF(str); this.dos.flush(); } catch (SocketException e) { clients.remove(this); } catch (IOException e) { e.printStackTrace(); } } } }
1.3版好友列表窗新增死循环等待接收线程，每当有新用户登陆则不断更新好友列表窗功能，标题设置为客户端端口做登陆区别
代码如下：
package com.swift.frame; import java.awt.BorderLayout; import java.awt.Component; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.net.Socket; import java.net.SocketException; import java.util.ArrayList; import java.util.List; import java.util.Vector; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.JTabbedPane; import javax.swing.SwingConstants; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class FriendsFrame extends JFrame { private static final long serialVersionUID = 1L; private Socket s; private DataOutputStream dos; private DataInputStream dis; private boolean connected=false; Vector<String> names = new Vector<String>(); JList<String> list=null; public FriendsFrame(String name,Socket socket) { super("欢迎 "+":"+socket.getLocalPort()); this.s=socket; connected=true; try { this.dos=new DataOutputStream(s.getOutputStream()); this.dis=new DataInputStream(s.getInputStream()); } catch (IOException e) { e.printStackTrace(); } JFrame.setDefaultLookAndFeelDecorated(true); JDialog.setDefaultLookAndFeelDecorated(true); try { UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel"); } catch (ClassNotFoundException e1) { e1.printStackTrace(); } catch (InstantiationException e1) { e1.printStackTrace(); } catch (IllegalAccessException e1) { e1.printStackTrace(); } catch (UnsupportedLookAndFeelException e1) { e1.printStackTrace(); } setBounds(100, 100, 247, 581); setVisible(true); final JPanel panel = new JPanel(); panel.setLayout(new BorderLayout()); getContentPane().add(panel, BorderLayout.NORTH); final JLabel label = new JLabel(new ImageIcon("Images/logo.jpg")); label.setText("New JLabel"); panel.add(label, BorderLayout.WEST); label.setPreferredSize(new Dimension(74,74)); final JPanel panel_1 = new JPanel(); panel_1.setLayout(new BorderLayout()); panel.add(panel_1, BorderLayout.CENTER); final JLabel advancingSwiftLabel = new JLabel(); advancingSwiftLabel.setText(name); panel_1.add(advancingSwiftLabel, BorderLayout.CENTER); final JLabel neverWasterLabel = new JLabel(); neverWasterLabel.setText("Never waste time any more"); panel_1.add(neverWasterLabel, BorderLayout.SOUTH); final JPanel panel_2 = new JPanel(); panel_2.setLayout(new BorderLayout()); getContentPane().add(panel_2, BorderLayout.SOUTH); final JPanel panel_3 = new JPanel(); final FlowLayout flowLayout = new FlowLayout(); flowLayout.setAlignment(FlowLayout.LEFT); panel_3.setLayout(flowLayout); panel_2.add(panel_3); final JButton button = new JButton(); panel_3.add(button); button.setHorizontalTextPosition(SwingConstants.LEFT); button.setHorizontalAlignment(SwingConstants.LEFT); button.setText("设置"); final JButton button_1 = new JButton(); panel_3.add(button_1); button_1.setText("查找"); final JPanel panel_4 = new JPanel(); panel_2.add(panel_4, BorderLayout.EAST); final JButton button_2 = new JButton(); panel_4.add(button_2); button_2.setText("退出"); final JTabbedPane tabbedPane = new JTabbedPane(); getContentPane().add(tabbedPane, BorderLayout.CENTER); final JPanel panel_5 = new JPanel(); tabbedPane.addTab("好友列表", null, panel_5, null); list=new JList<String>(); panel_5.add(list); final JPanel panel_6 = new JPanel(); tabbedPane.addTab("群聊", null, panel_6, null); final JPanel panel_7 = new JPanel(); tabbedPane.addTab("聊天记录", null, panel_7, null); this.setDefaultCloseOperation(EXIT_ON_CLOSE); final JMenuBar menuBar = new JMenuBar(); setJMenuBar(menuBar); final JMenu menu = new JMenu(); menu.setText("操作"); menuBar.add(menu); final JMenuItem newItemMenuItem = new JMenuItem(); newItemMenuItem.setText("设置"); menu.add(newItemMenuItem); final JMenuItem newItemMenuItem_1 = new JMenuItem(); newItemMenuItem_1.setText("空间"); menu.add(newItemMenuItem_1); final JMenuItem newItemMenuItem_2 = new JMenuItem(); newItemMenuItem_2.setText("邮箱"); menu.add(newItemMenuItem_2); final JMenu menu_1 = new JMenu(); menu_1.setText("会员"); menu.add(menu_1); final JMenuItem newItemMenuItem_3 = new JMenuItem(); newItemMenuItem_3.setText("会员官网"); menu_1.add(newItemMenuItem_3); final JMenuItem newItemMenuItem_4 = new JMenuItem(); newItemMenuItem_4.setText("会员专区"); menu_1.add(newItemMenuItem_4); menu.addSeparator(); final JMenu menu_2 = new JMenu(); menu_2.setText("安全"); menu.add(menu_2); final JMenuItem newItemMenuItem_5 = new JMenuItem(); newItemMenuItem_5.setText("紧急冻结"); menu_2.add(newItemMenuItem_5); final JMenuItem newItemMenuItem_6 = new JMenuItem(); newItemMenuItem_6.setText("密码保护"); menu_2.add(newItemMenuItem_6); final JMenuItem newItemMenuItem_7 = new JMenuItem(); newItemMenuItem_7.setText("退出"); menu.add(newItemMenuItem_7); final FlowLayout flowLayout_1 = new FlowLayout(); flowLayout_1.setAlignment(FlowLayout.RIGHT); this.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { disconnect(); System.exit(0); } }); //调用傻傻的等待接收列表信息 new Thread(new WaitingReceive()).start(); list.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { if(e.getClickCount()==2) { new ChatFrame(s); } } }); } public void disconnect() { try { if (dos != null) dos.close(); if (dis != null) dis.close(); if (s != null) s.close(); } catch (IOException e) { e.printStackTrace(); } } class WaitingReceive implements Runnable { @Override public void run() { try { while (connected) { String name=dis.readUTF(); System.out.println(name); names.add(name); list.setListData(names); } } catch (SocketException e) { System.out.println("a client has been closed!"); } catch (IOException e) { e.printStackTrace();以上是关于java在线聊天项目1.3版 ——设计好友列表框功能的主要内容，如果未能解决你的问题，请参考以下文章
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