ChatClient.java
包含名为ChatClient的public类，其主要功能为定义客户端的界面，添加时间监听与事件处理。该类定义了Connect（）与DisConnect（）方法实现与客户端的连接与断开连接。当登陆到指定的服务器时，调用ClientReceive类实现消息收发，同时该类还定义了SendMessaga（）方法来其他用户发送带有表情的消息或悄悄话。
1 /*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6 package com.silianbo.client;
7
8 /**
9 *
10 * @author silianbo
11 * 客户端主界面
12 */
13 import com.silianbo.CaptureScreen;
14 import static com.silianbo.CaptureScreen.captureScreen;
15 import com.silianbo.client.ConnectConf;
16 import com.silianbo.client.Help;
17 import com.silianbo.client.UserConf;
18
19 import com.sun.security.ntlm.Client;
20 import java.awt.BorderLayout;
21 import java.awt.Component;
22 import java.awt.Container;
23 import java.awt.Dimension;
24 import java.awt.GridBagConstraints;
25 import java.awt.GridBagLayout;
26 import java.awt.Insets;
27 import java.awt.Toolkit;
28 import java.awt.event.ActionEvent;
29 import java.awt.event.ActionListener;
30 import java.awt.event.WindowAdapter;
31 import java.awt.event.WindowEvent;
32 import java.io.ObjectInputStream;
33 import java.io.ObjectOutputStream;
34 import java.net.Socket;
35 import java.util.logging.Level;
36 import java.util.logging.Logger;
37 import javax.swing.JButton;
38 import javax.swing.JCheckBox;
39 import javax.swing.JComboBox;
40 import javax.swing.JFrame;
41 import javax.swing.JLabel;
42 import javax.swing.JMenu;
43 import javax.swing.JMenuBar;
44 import javax.swing.JMenuItem;
45 import javax.swing.JOptionPane;
46 import javax.swing.JPanel;
47 import javax.swing.JScrollPane;
48 import javax.swing.JTextArea;
49 import javax.swing.JTextField;
50 import javax.swing.JToolBar;
51 import javax.swing.UIManager;
52 import javax.swing.UnsupportedLookAndFeelException;
53
54 /*
55 * 聊天客户端的主框架类
56 */
57 public final class ChatClient extends JFrame implements ActionListener {
58
59 /**
60 * 版本控制，默认版本控制1L
61 */
62 private static final long serialVersionUID = 1L;
63
64 String ip = "127.0.0.1"; //连接到服务端的ip地址
65 int port = 8888; //连接到服务端的端口号
66 String userName = "silianbo"; //用户名
67 int type = 0; //，用户连接标记，其中0表示未连接，1表示已连接
68
69 JComboBox combobox; //选择发送消息的接受者
70 JTextArea messageShow; //客户端的信息显示
71 JScrollPane messageScrollPane; //信息显示的滚动条
72
73 JLabel express, sendToLabel, messageLabel;
74
75 JTextField clientMessage;//客户端消息的发送
76 JCheckBox checkbox;//悄悄话
77 JComboBox actionlist;//表情选择
78 JButton clientMessageButton;//发送消息
79 JTextField showStatus;//显示用户连接状态
80
81 Socket socket;
82 ObjectOutputStream output;//网络套接字输出流
83 ObjectInputStream input;//网络套接字输入流
84
85 ClientReceive recvThread;
86
87 //建立菜单栏
88 JMenuBar jMenuBar = new JMenuBar();
89 //建立菜单组
90 JMenu operateMenu = new JMenu("操作");
91 //建立菜单项
92 JMenuItem loginItem = new JMenuItem("用户登录");
93 JMenuItem logoffItem = new JMenuItem("用户注销");
94 JMenuItem exitItem = new JMenuItem("退出");
95
96 JMenu conMenu = new JMenu("设置");
97 JMenuItem userItem = new JMenuItem("用户设置");
98 JMenuItem connectItem = new JMenuItem("连接设置");
99
100 JMenu helpMenu = new JMenu("帮助");
101 JMenuItem helpItem = new JMenuItem("帮助");
102
103 //建立工具栏
104 JToolBar toolBar = new JToolBar();
105
106 //建立工具栏中的按钮组件
107 JButton loginButton;//用户登录
108 JButton logoffButton;//用户注销
109 JButton userButton;//用户信息的设置
110 JButton connectButton;//连接设置
111 JButton exitButton;//退出按钮
112 JButton captureScreenButton; //截屏按钮
113
114 //框架的大小
115 Dimension faceSize = new Dimension(550, 550);
116
117 JPanel downPanel;
118 GridBagLayout girdBag;
119 GridBagConstraints girdBagCon;
120
121 public ChatClient() {
122 init();//初始化程序
123
124 //添加框架的关闭事件处理
125 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
126 this.pack();
127 //设置框架的大小
128 this.setSize(faceSize);
129
130 //设置运行时窗口的位置
131 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
132 this.setLocation((int) (screenSize.width - faceSize.getWidth()) / 2,
133 (int) (screenSize.height - faceSize.getHeight()) / 2);
134 this.setResizable(false);
135 this.setTitle("聊天室客户端"); //设置标题
136
137 setVisible(true);
138
139 //为操作菜单栏设置热键‘V‘
140 operateMenu.setMnemonic(‘O‘);
141
142 }
143
144 /**
145 * 程序初始化函数
146 */
147 public void init() {
148
149 Container contentPane = getContentPane();
150 contentPane.setLayout(new BorderLayout());
151
152 //添加菜单栏，对应55行相关介绍
153 jMenuBar.add(operateMenu); //操作（1.2.3）
154 operateMenu.add(loginItem); //1.用户登录
155 operateMenu.add(logoffItem); //2.用户注销
156 operateMenu.add(exitItem); //2.退出
157
158 jMenuBar.add(conMenu); //设置(a.b)
159 conMenu.add(userItem); //a.用户设置
160 conMenu.add(connectItem); //b.连接设置
161
162 jMenuBar.add(helpMenu); //帮助（I）
163 helpMenu.add(helpItem); //I.帮助
164
165 setJMenuBar(jMenuBar);
166
167 //初始化按钮
168 loginButton = new JButton("登录");
169 logoffButton = new JButton("注销");
170 userButton = new JButton("用户设置");
171 connectButton = new JButton("连接设置");
172 exitButton = new JButton("退出");
173 captureScreenButton = new JButton("全屏截屏");
174 JButton screenShotButton = new JButton("区域截图");
175
176 //当鼠标放上显示信息
177 loginButton.setToolTipText("连接到指定的服务器");
178 logoffButton.setToolTipText("与服务器断开连接");
179 userButton.setToolTipText("设置用户信息");
180 connectButton.setToolTipText("设置所要连接到的服务器信息");
181 captureScreenButton.setToolTipText("现在只能全屏截下全屏");
182 //将按钮添加到工具栏
183 toolBar.add(userButton);
184 Component add = toolBar.add(connectButton);
185 toolBar.addSeparator();//添加分隔栏
186 toolBar.add(loginButton);
187 toolBar.add(logoffButton);
188 toolBar.addSeparator();//添加分隔栏
189 toolBar.add(exitButton);
190 toolBar.add(captureScreenButton);
191 toolBar.add(screenShotButton);
192
193 contentPane.add(toolBar, BorderLayout.NORTH);
194
195 checkbox = new JCheckBox("悄悄话");
196 checkbox.setSelected(false);
197
198 actionlist = new JComboBox();
199 actionlist.addItem("@/微笑@");
200 actionlist.addItem("@/高兴@");
201 actionlist.addItem("@/轻轻@");
202 actionlist.addItem("@/生气@");
203 actionlist.addItem("@/小心@");
204 actionlist.addItem("@/静静@");
205 actionlist.setSelectedIndex(0);
206
207 //初始时
208 loginButton.setEnabled(true);
209 logoffButton.setEnabled(false);
210
211 //为菜单栏添加事件监听
212 loginItem.addActionListener(this);
213 logoffItem.addActionListener(this);
214 exitItem.addActionListener(this);
215 userItem.addActionListener(this);
216 connectItem.addActionListener(this);
217 helpItem.addActionListener(this);
218
219 //添加按钮的事件侦听
220 loginButton.addActionListener(this);
221 logoffButton.addActionListener(this);
222 userButton.addActionListener(this);
223 connectButton.addActionListener(this);
224 exitButton.addActionListener(this);
225
226 /*
227 *全屏截屏事件监听处理
228 */
229 captureScreenButton.addActionListener((ActionEvent e) -> {
230 try {
231 CaptureScreen.RandomName filename = new CaptureScreen.RandomName();
232 captureScreen("C:\\Users\\silianbo\\Desktop\\计算机网络课程设计\\image", filename + ".png");
233 } catch (Exception ex) {
234 Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
235 }
236 });
237 /**
238 * 区域截屏监听
239 */
240 screenShotButton.addActionListener(this);
241
242 combobox = new JComboBox();
243 combobox.insertItemAt("所有人", 0);
244 combobox.setSelectedIndex(0);
245
246 messageShow = new JTextArea();
247 messageShow.setEditable(false);
248 //添加滚动条
249 messageScrollPane = new JScrollPane(messageShow,
250 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
251 JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
252 messageScrollPane.setPreferredSize(new Dimension(400, 400));
253 messageScrollPane.revalidate();
254
255 clientMessage = new JTextField(23);
256 clientMessage.setEnabled(false);
257 clientMessageButton = new JButton();
258 clientMessageButton.setText("发送");
259
260 //添加系统消息的事件侦听
261 clientMessage.addActionListener(this);
262 clientMessageButton.addActionListener(this);
263
264 sendToLabel = new JLabel("发送至:");
265 express = new JLabel(" 表情: ");
266 messageLabel = new JLabel("发送消息:");
267 downPanel = new JPanel();
268 girdBag = new GridBagLayout();
269 downPanel.setLayout(girdBag);
270
271 girdBagCon = new GridBagConstraints();
272 girdBagCon.gridx = 0;
273 girdBagCon.gridy = 0;
274 girdBagCon.gridwidth = 5;
275 girdBagCon.gridheight = 2;
276 girdBagCon.ipadx = 5;
277 girdBagCon.ipady = 5;
278 JLabel none = new JLabel(" ");
279 girdBag.setConstraints(none, girdBagCon);
280 downPanel.add(none);
281
282 girdBagCon = new GridBagConstraints();
283 girdBagCon.gridx = 0;
284 girdBagCon.gridy = 2;
285 girdBagCon.insets = new Insets(1, 0, 0, 0);
286 //girdBagCon.ipadx = 5;
287 //girdBagCon.ipady = 5;
288 girdBag.setConstraints(sendToLabel, girdBagCon);
289 downPanel.add(sendToLabel);
290
291 girdBagCon = new GridBagConstraints();
292 girdBagCon.gridx = 1;
293 girdBagCon.gridy = 2;
294 girdBagCon.anchor = GridBagConstraints.LINE_START;
295 girdBag.setConstraints(combobox, girdBagCon);
296 downPanel.add(combobox);
297
298 girdBagCon = new GridBagConstraints();
299 girdBagCon.gridx = 2;
300 girdBagCon.gridy = 2;
301 girdBagCon.anchor = GridBagConstraints.LINE_END;
302 girdBag.setConstraints(express, girdBagCon);
303 downPanel.add(express);
304
305 girdBagCon = new GridBagConstraints();
306 girdBagCon.gridx = 3;
307 girdBagCon.gridy = 2;
308 girdBagCon.anchor = GridBagConstraints.LINE_START;
309 //girdBagCon.insets = new Insets(1,0,0,0);
310 //girdBagCon.ipadx = 5;
311 //girdBagCon.ipady = 5;
312 girdBag.setConstraints(actionlist, girdBagCon);
313 downPanel.add(actionlist);
314
315 girdBagCon = new GridBagConstraints();
316 girdBagCon.gridx = 4;
317 girdBagCon.gridy = 2;
318 girdBagCon.insets = new Insets(1, 0, 0, 0);
319 // girdBagCon.ipadx = 5;
320 // girdBagCon.ipady = 5;
321 girdBag.setConstraints(checkbox, girdBagCon);
322 downPanel.add(checkbox);
323
324 girdBagCon = new GridBagConstraints();
325 girdBagCon.gridx = 0;
326 girdBagCon.gridy = 3;
327 girdBag.setConstraints(messageLabel, girdBagCon);
328 downPanel.add(messageLabel);
329
330 girdBagCon = new GridBagConstraints();
331 girdBagCon.gridx = 1;
332 girdBagCon.gridy = 3;
333 girdBagCon.gridwidth = 3;
334 girdBagCon.gridheight = 1;
335 girdBag.setConstraints(clientMessage, girdBagCon);
336 downPanel.add(clientMessage);
337
338 girdBagCon = new GridBagConstraints();
339 girdBagCon.gridx = 4;
340 girdBagCon.gridy = 3;
341 girdBag.setConstraints(clientMessageButton, girdBagCon);
342 downPanel.add(clientMessageButton);
343
344 showStatus = new JTextField(35);
345 showStatus.setEditable(false);
346 girdBagCon = new GridBagConstraints();
347 girdBagCon.gridx = 0;
348 girdBagCon.gridy = 5;
349 girdBagCon.gridwidth = 5;
350 girdBag.setConstraints(showStatus, girdBagCon);
351 downPanel.add(showStatus);
352
353 contentPane.add(messageScrollPane, BorderLayout.CENTER);
354 contentPane.add(downPanel, BorderLayout.SOUTH);
355
356 //关闭程序时的操作
357 this.addWindowListener(
358 new WindowAdapter() {
359 @Override
360 public void windowClosing(WindowEvent e) {
361 if (type == 1) {
362 DisConnect();
363 }
364 System.exit(0);
365 }
366 }
367 );
368 }
369
370 /**
371 * 事件处理
372 */
373 @Override
374 public void actionPerformed(ActionEvent e) {
375 Object obj = e.getSource();
376
377 if (obj == userItem || obj == userButton) { //用户信息设置
378 //调出用户信息设置对话框
379 UserConf userConf = new UserConf(this, userName);
380 userConf.setVisible(true);
381 userName = userConf.userInputName;
382 } else if (obj == connectItem || obj == connectButton) { //连接服务端设置
383 //调出连接设置对话框
384 ConnectConf conConf = new ConnectConf(this, ip, port);
385 conConf.setVisible(true);
386 ip = conConf.userInputIp;
387 port = conConf.userInputPort;
388 } else if (obj == loginItem || obj == loginButton) { //登录
389 Connect();
390 } else if (obj == logoffItem || obj == logoffButton) { //注销
391 DisConnect();
392 showStatus.setText("");
393 } else if (obj == clientMessage || obj == clientMessageButton) { //发送消息
394 SendMessage();
395 clientMessage.setText("");
396 } else if (obj == exitButton || obj == exitItem) { //退出
397 int j = JOptionPane.showConfirmDialog(
398 this, "真的要退出吗?", "退出",
399 JOptionPane.YES_OPTION, JOptionPane.QUESTION_MESSAGE);
400
401 if (j == JOptionPane.YES_OPTION) {
402 if (type == 1) {
403 DisConnect();
404 }
405 System.exit(0);
406 }
407 } else if (obj == helpItem) { //菜单栏中的帮助
408 //调出帮助对话框
409 Help helpDialog = new Help(this);
410 helpDialog.setVisible(true);
411 }
412 }
413 /**
414 * 连接服务器
415 */
416 public void Connect() {
417 try {
418 socket = new Socket(ip, port);
419 } catch (Exception e) {
420 JOptionPane.showConfirmDialog(
421 this, "不能连接到指定的服务器。\n请确认连接设置是否正确。", "提示",
422 JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE);
423 return;
424 }
425
426 try {
427 output = new ObjectOutputStream(socket.getOutputStream());
428 output.flush();
429
430 input = new ObjectInputStream(socket.getInputStream());
431
432 output.writeObject(userName);
433 output.flush();
434
435 recvThread = new ClientReceive(socket, output, input, combobox, messageShow, showStatus);
436 recvThread.start();
437
438 loginButton.setEnabled(false);
439 loginItem.setEnabled(false);
440 userButton.setEnabled(false);
441 userItem.setEnabled(false);
442 connectButton.setEnabled(false);
443 connectItem.setEnabled(false);
444 logoffButton.setEnabled(true);
445 logoffItem.setEnabled(true);
446 clientMessage.setEnabled(true);
447 messageShow.append("连接服务器 " + ip + ":" + port + " 成功...\n");
448 type = 1;//标志位设为已连接
449 } catch (Exception e) {
450 System.out.println(e);
451 }
452 }
453
454 /**
455 *服务器注销
456 */
457 public void DisConnect() {
458 loginButton.setEnabled(true);
459 loginItem.setEnabled(true);
460 userButton.setEnabled(true);
461 userItem.setEnabled(true);
462 connectButton.setEnabled(true);
463 connectItem.setEnabled(true);
464 logoffButton.setEnabled(false);
465 logoffItem.setEnabled(false);
466 clientMessage.setEnabled(false);
467
468 if (socket.isClosed()) {
469 return;
470 }
471
472 try {
473 output.writeObject("用户下线");
474 output.flush();
475
476 input.close();
477 output.close();
478 socket.close();
479 messageShow.append("已经与服务器断开连接...\n");
480 type = 0;//标志位设为未连接
481 } catch (Exception e) {
482 //
483 }
484 }
485
486 public void SendMessage() {
487 String toSomebody = combobox.getSelectedItem().toString();
488 String status = "";
489 if (checkbox.isSelected()) {
490 status = "悄悄话";
491 }
492
493 String action = actionlist.getSelectedItem().toString();
494 String message = clientMessage.getText();
495
496 if (socket.isClosed()) {
497 return;
498 }
499
500 try {
501 output.writeObject("聊天信息");
502 output.flush();
503 output.writeObject(toSomebody);
504 output.flush();
505 output.writeObject(status);
506 output.flush();
507 output.writeObject(action);
508 output.flush();
509 output.writeObject(message);
510 output.flush();
511 } catch (Exception e) {
512 //
513 }
514 }
515
516 public static void main(String[] args) throws UnsupportedLookAndFeelException {
517 try {
518 UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
519 } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
520 }
521 ChatClient chatClient = new ChatClient();
522 }
523 }
ConnectConf.java
该类继承自Jdialog，是用户对所有要连接的服务器IP及监听端口进行修改配置的类
1 /*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6 package com.silianbo.client;
7
8 import java.awt.BorderLayout;
9 import java.awt.Container;
10 import java.awt.Dimension;
11 import java.awt.GridLayout;
12 import java.awt.Label;
13 import java.awt.Toolkit;
14 import java.awt.event.ActionEvent;
15 import java.awt.event.WindowAdapter;
16 import java.awt.event.WindowEvent;
17 import java.net.InetAddress;
18 import java.net.UnknownHostException;
19 import javax.swing.JButton;
20 import javax.swing.JDialog;
21 import javax.swing.JFrame;
22 import javax.swing.JLabel;
23 import javax.swing.JPanel;
24 import javax.swing.JTextField;
25
26 /**
27 *
28 * @author silianbo
29 * 生成连接信息输入的对话框 让用户输入连接服务器的IP和端口
30 */
31 public class ConnectConf extends JDialog {
32
33 /**
34 *
35 */
36 private static final long serialVersionUID = 1L;
37 JPanel panelUserConf = new JPanel();
38 JButton save = new JButton();
39 JButton cancel = new JButton();
40 JLabel DLGINFO = new JLabel(
41 " 默认连接设置为 127.0.0.1:8888");
42
43 JPanel panelSave = new JPanel();
44 JLabel message = new JLabel();
45
46 String userInputIp;
47 int userInputPort;
48
49 JTextField inputIp;
50 JTextField inputPort;
51
52 public ConnectConf(JFrame frame, String ip, int port) {
53 super(frame, true);
54 this.userInputIp = ip;
55 this.userInputPort = port;
56 try {
57 jbInit();
58 } catch (Exception e) {
59 }
60 //设置运行位置，使对话框居中
61 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
62 this.setLocation((int) (screenSize.width - 400) / 2 + 50,
63 (int) (screenSize.height - 600) / 2 + 150);
64 this.setResizable(false);
65 }
66
67 private void jbInit() throws Exception {
68 this.setSize(new Dimension(300, 130));
69 this.setTitle("连接设置");
70 message.setText(" 请输入服务器的IP地址:");
71 inputIp = new JTextField(10);
72 inputIp.setText(userInputIp);
73 inputPort = new JTextField(4);
74 inputPort.setText("" + userInputPort);
75 save.setText("保存");
76 cancel.setText("取消");
77
78 panelUserConf.setLayout(new GridLayout(2, 2, 1, 1));
79 panelUserConf.add(message);
80 panelUserConf.add(inputIp);
81 panelUserConf.add(new JLabel(" 请输入服务器的端口号:"));
82 panelUserConf.add(inputPort);
83
84 panelSave.add(new Label(" "));
85 panelSave.add(save);
86 panelSave.add(cancel);
87 panelSave.add(new Label(" "));
88
89 Container contentPane = getContentPane();
90 contentPane.setLayout(new BorderLayout());
91 contentPane.add(panelUserConf, BorderLayout.NORTH);
92 contentPane.add(DLGINFO, BorderLayout.CENTER);
93 contentPane.add(panelSave, BorderLayout.SOUTH);
94
95 //保存按钮的事件处理
96 save.addActionListener((ActionEvent a) -> {
97 int savePort;
98 //判断端口号是否合法
99 try {
100 userInputIp = "" + InetAddress.getByName(inputIp.getText());
101 userInputIp = userInputIp.substring(1);
102 } catch (UnknownHostException e) {
103 DLGINFO.setText(
104 " 错误的IP地址！");
105
106 return;
107 }
108 //userInputIp = inputIP;
109
110 //判断端口号是否合法
111 try {
112 savePort = Integer.parseInt(inputPort.getText());
113
114 if (savePort < 1 || savePort > 65535) {
115 DLGINFO.setText(" 侦听端口必须是0-65535之间的整数!");
116 inputPort.setText("");
117 return;
118 }
119 userInputPort = savePort;
120 dispose();
121 } catch (NumberFormatException e) {
122 DLGINFO.setText(" 错误的端口号,端口号请填写整数!");
123 inputPort.setText("");
124 }
125 });
126
127 //关闭对话框时的操作
128 this.addWindowListener(
129 new WindowAdapter() {
130 @Override
131 public void windowClosing(WindowEvent e) {
132 DLGINFO.setText(" 默认连接设置为 127.0.0.1:8888");
133 }
134 }
135 );
136
137 //取消按钮的事件处理
138 cancel.addActionListener((ActionEvent e) -> {
139 DLGINFO.setText(" 默认连接设置为 127.0.0.1:8888");
140 dispose();
141 });
142 }
143 }
UserConf.java
该类继承自Jdialog，是用户对链接到服务器时所显示的用户名进行修改配置的类。
1 /*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6 package com.silianbo.client;
7
8 import java.awt.*;
9 import javax.swing.*;
10 import java.awt.event.*;
11 /**
12 *
13 * @author silianbo
14 * 生成用户信息输入对话框的类
15 * 让用户输入自己的用户名
16 */
17 public class UserConf extends JDialog {
18 /**
19 *
20 */
21 private static final long serialVersionUID = 1L;
22 JPanel panelUserConf = new JPanel();
23 JButton save = new JButton();
24 JButton cancel = new JButton();
25 JLabel DLGINFO=new JLabel(
26 " 默认用户名为：silianbo");
27
28 JPanel panelSave = new JPanel();
29 JLabel message = new JLabel();
30 String userInputName;
31
32 JTextField userName ;
33
34 public UserConf(JFrame frame,String str) {
35 super(frame, true);
36 this.userInputName = str;
37 try {
38 jbInit();
39 }
40 catch (Exception e) {
41 e.printStackTrace();
42 }
43 //设置运行位置，使对话框居中
44 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
45 this.setLocation( (int) (screenSize.width - 400) / 2 + 50,
46 (int) (screenSize.height - 600) / 2 + 150);
47 this.setResizable(false);
48 }
49
50 private void jbInit() throws Exception {
51 this.setSize(new Dimension(300, 120));
52 this.setTitle("用户设置");
53 message.setText("请输入用户名:");
54 userName = new JTextField(10);
55 userName.setText(userInputName);
56 save.setText("保存");
57 cancel.setText("取消");
58
59 panelUserConf.setLayout(new FlowLayout());
60 panelUserConf.add(message);
61 panelUserConf.add(userName);
62
63 panelSave.add(new Label(" "));
64 panelSave.add(save);
65 panelSave.add(cancel);
66 panelSave.add(new Label(" "));
67
68 Container contentPane = getContentPane();
69 contentPane.setLayout(new BorderLayout());
70 contentPane.add(panelUserConf, BorderLayout.NORTH);
71 contentPane.add(DLGINFO, BorderLayout.CENTER);
72 contentPane.add(panelSave, BorderLayout.SOUTH);
73
74 //保存按钮的事件处理
75 save.addActionListener(
76 new ActionListener() {
77 public void actionPerformed (ActionEvent a) {
78 if(userName.getText().equals("")){
79 DLGINFO.setText(
80 " 用户名不能为空！");
81 userName.setText(userInputName);
82 return;
83 }
84 else if(userName.getText().length() > 15){
85 DLGINFO.setText(" 用户名长度不能大于15个字符！");
86 userName.setText(userInputName);
87 return;
88 }
89 userInputName = userName.getText();
90 dispose();
91 }
92 }
93 );
94
95 //关闭对话框时的操作
96 this.addWindowListener(
97 new WindowAdapter(){
98 @Override
99 public void windowClosing(WindowEvent e){
100 DLGINFO.setText(" 默认用户名为：silianbo");
101 }
102 }
103 );
104
105 //取消按钮的事件处理
106 cancel.addActionListener((ActionEvent e) -> {
107 DLGINFO.setText(" 默认用户名为：silianbo");
108 dispose();
109 });
110 }
111 }
Help.java
客户端程序的帮助类
1 /*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6 package com.silianbo.client;
7
8 /**
9 *
10 * @author silianbo
11 */
12 import java.awt.*;
13 import javax.swing.*;
14 import java.awt.event.*;
15
16 /**
17 * 生成设置对话框的类
18 */
19 public class Help extends JDialog {
20
21 /**
22 *
23 */
24 private static final long serialVersionUID = 1L;
25 JPanel titlePanel = new JPanel();
26 JPanel contentPanel = new JPanel();
27 JPanel closePanel = new JPanel();
28
29 JButton close = new JButton();
30 JLabel title = new JLabel("聊天室客户端帮助");
31 JTextArea help = new JTextArea();
32
33 Color bg = new Color(255,255,255);
34
35 public Help(JFrame frame) {
36 super(frame, true);
37 try {
38 jbInit();
39 }
40 catch (Exception e) {
41 e.printStackTrace();
42 }
43 //设置运行位置，使对话框居中
44 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
45 this.setLocation( (int) (screenSize.width - 400) / 2 + 25,
46 (int) (screenSize.height - 320) / 2);
47 this.setResizable(false);
48 }
49
50 private void jbInit() throws Exception {
51 this.setSize(new Dimension(350, 270));
52 this.setTitle("帮助");
53
54 titlePanel.setBackground(bg);;
55 contentPanel.setBackground(bg);
56 closePanel.setBackground(bg);
57
58 help.setText("1、设置所要连接服务端的IP地址和端口"+
59 "（默认设置为\n 127.0.0.1:8888）。\n"+
60 "2、输入你的用户名（默认设置为:silianbo）。\n"+
61 "3、点击“登录”便可以连接到指定的服务器；\n"+
62 " 点击“注销”可以和服务器端开连接。\n"+
63 "4、选择需要接受消息的用户，在消息栏中写入消息，\n"+
64 " 同时选择表情，之后便可发送消息。\n");
65 help.setEditable(false);
66
67 titlePanel.add(new Label(" "));
68 titlePanel.add(title);
69 titlePanel.add(new Label(" "));
70
71 contentPanel.add(help);
72
73 closePanel.add(new Label(" "));
74 closePanel.add(close);
75 closePanel.add(new Label(" "));
76
77 Container contentPane = getContentPane();
78 contentPane.setLayout(new BorderLayout());
79 contentPane.add(titlePanel, BorderLayout.NORTH);
80 contentPane.add(contentPanel, BorderLayout.CENTER);
81 contentPane.add(closePanel, BorderLayout.SOUTH);
82
83 close.setText("关闭");
84 //事件处理
85 close.addActionListener((ActionEvent e) -> {
86 dispose();
87 });
88 }
89 }
ClientReceive.java
该类是实现服务器端与客户端消息收发的类
1 /*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6 package com.silianbo.client;
7
8 import java.io.IOException;
9 import java.io.ObjectInputStream;
10 import java.io.ObjectOutputStream;
11 import java.net.Socket;
12 import javax.swing.JComboBox;
13 import javax.swing.JTextArea;
14 import javax.swing.JTextField;
15
16 /**
17 *
18 * @author silianbo
19 * 聊天客户端消息收发类
20 */
21 public class ClientReceive extends Thread {
22 private final JComboBox combobox;
23 private final JTextArea textarea;
24
25 Socket socket;
26 ObjectOutputStream output;
27 ObjectInputStream input;
28 JTextField showStatus;
29
30 public ClientReceive(Socket socket,ObjectOutputStream output,
31 ObjectInputStream input,JComboBox combobox,JTextArea textarea,JTextField showStatus){
32
33 this.socket = socket;
34 this.output = output;
35 this.input = input;
36 this.combobox = combobox;
37 this.textarea = textarea;
38 this.showStatus = showStatus;
39 }
40
41 @Override
42 public void run(){
43 while(!socket.isClosed()){
44 try{
45 String type = (String)input.readObject();
46
47 if(type.equalsIgnoreCase("系统信息")){
48 String sysmsg = (String)input.readObject();
49 textarea.append("系统信息: "+sysmsg);
50 }
51 else if(type.equalsIgnoreCase("服务关闭")){
52 output.close();
53 input.close();
54 socket.close();
55
56 textarea.append("服务器已关闭！\n");
57
58 break;
59 }
60 else if(type.equalsIgnoreCase("聊天信息")){
61 String message = (String)input.readObject();
62 textarea.append(message);
63 }
64 else if(type.equalsIgnoreCase("用户列表")){
65 String userlist = (String)input.readObject();
66 String usernames[] = userlist.split("\n");
67 combobox.removeAllItems();
68
69 int i =0;
70 combobox.addItem("所有人");
71 while(i < usernames.length){
72 combobox.addItem(usernames[i]);
73 i ++;
74 }
75 combobox.setSelectedIndex(0);
76 showStatus.setText("在线用户 " + usernames.length + " 人");
77 }
78 }
79 catch (IOException | ClassNotFoundException e ){
80 System.out.println(e);
81 }
82 }
83 }
84 }
时间： 2024-10-06 20:59:14