一个简单的支持多聊天室的多线程聊天程序
有几个需要注意的地方,一个是多线程的部分,然后获得inputstream和outputstream的顺序也很重要,其次ObjectOutputStream在发送的时候要记得调用reset()方法去清cache,否则不会传最新的。
caller class:
chatter class:
ClientGUI class:
ClientLogin class:
ClientThreadHandler class:
Coordinator class:
DataFrame class:
Secretary class:
Server class:
ServerGUI class:
ServerThreadHandler class:
caller class:
1
package networking;
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import java.io.*;
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import java.net.*;
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import java.util.*;
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/**
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* This class implements Observer,which will send the updated users' list back
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* to the user
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*
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* @author
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* @version 1.0
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*/
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public class Caller implements Observer
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{
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/**
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* Attributes
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*/
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private Socket socket;
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private ObjectOutputStream oos;
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/**
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* Constructor
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*/
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public Caller(Socket socket, ObjectOutputStream oos)
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{
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this.socket = socket;
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this.oos = oos;
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}
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/**
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* getter
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*
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* @return Socket
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*/
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public Socket getSocket()
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{
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return this.socket;
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}
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/**
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* getter
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*
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* @return ObjectOutputStream
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*/
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public ObjectOutputStream getObjectOutputStream()
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{
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return this.oos;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.util.Observer#update(java.util.Observable, java.lang.Object)
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*/
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public void update(Observable observable, Object object)
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{
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try
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{
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String room = (String)object;
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Chatter chatter = Secretary.getSecretary().findChatter(socket);
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if(chatter.getRoom().equals("Hall"))// if it is hall,send out
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// the full list
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{
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try
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{
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DataFrame df = new DataFrame("UserList", Secretary
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.getSecretary().getRegister());// full list
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oos.reset();// clean cache of objectoutputstream
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oos.writeObject(df);
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oos.flush();
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}
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catch(InterruptedIOException iioe)
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{
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Secretary.getSecretary().deleteRecord(socket);
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Coordinator.getCoordinator().notifyOffline(this,chatter.getRoom());
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socket.close();
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}
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catch(IOException e)
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{
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Secretary.getSecretary().deleteRecord(socket);
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Coordinator.getCoordinator().notifyOffline(this,chatter.getRoom());
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socket.close();
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}
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}
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else if(chatter.getRoom().equals(room))// notice the people in
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// the same room that a
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// guy logined in or
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// logined out
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{
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try
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{
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DataFrame df = new DataFrame("UserList", Secretary
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.getSecretary().getRegister(room));// only
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// return
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// the list
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// of people
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// in this
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// room
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oos.reset();
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oos.writeObject(df);
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oos.flush();
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}
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catch(InterruptedIOException iioe)// no response during
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// the time
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{
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Secretary.getSecretary().deleteRecord(socket);
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Coordinator.getCoordinator().notifyOffline(this,chatter.getRoom());
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socket.close();
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}
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catch(IOException e)// network problem
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{
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Secretary.getSecretary().deleteRecord(socket);
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Coordinator.getCoordinator().notifyOffline(this,chatter.getRoom());
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socket.close();
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}
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}
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}
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catch(IOException e)// catch for exception that might be thrown from
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// socket.close method
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{
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}
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}
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}
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chatter class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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import java.io.*;
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import java.net.*;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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/**
7
* Chatter class will hold the chatter's information,it implements
8
* Serializable,and it will be transported though network
9
*
10
* @author
11
* @version 1.0
12
*/
13
@SuppressWarnings("serial")
14
public class Chatter implements Serializable
15
{
16
/**
17
* Attributes
18
*/
19
private String ip;
20
private int port;
21
private String name;
22
private String room;
23
24
/**
25
* Constructor
26
*/
27
public Chatter(Socket socket, String name)
28
{
29
this.ip = socket.getInetAddress().toString();
30
this.port = socket.getPort();
31
this.name = name;
32
this.room = "Hall";
33
}
34
35
/**
36
* getter
37
*
38
* @return String
39
*/
40
public String getRoom()
41
{
42
return this.room;
43
}
44
45
/**
46
* setter
47
*
48
* @param room
49
*/
50
public void setRoom(String room)
51
{
52
this.room = room;
53
}
54
55
/**
56
* getter
57
*
58
* @return String
59
*/
60
public String getIP()
61
{
62
return this.ip;
63
}
64
65
/**
66
* getter
67
*
68
* @return String
69
*/
70
public String getName()
71
{
72
return this.name;
73
}
74
75
/**
76
* getter
77
*
78
* @return int
79
*/
80
public int getPort()
81
{
82
return this.port;
83
}
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}
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client class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.io.*;
4
import java.net.*;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
/**
7
* client class,that will create the connection and send data use socket
8
* @author
9
* @version 1.0
10
*/
11
public class Client
12
{
13
/**
14
* Attributes
15
*/
16
private Socket socket;
17
private ObjectInputStream ois;
18
private ObjectOutputStream oos;
19
private static final int TIMEOUT_LENGTH = 300000;//max timeout number,5 minutes
20
21
/**
22
* Constructor
23
*/
24
public Client(String ip, int port) throws Exception
25
{
26
socket = new Socket(ip, port);
27
socket.setSoTimeout(TIMEOUT_LENGTH);
28
oos = new ObjectOutputStream(socket.getOutputStream());
29
ois = new ObjectInputStream(socket.getInputStream());
30
}
31
32
/**
33
* send method that will send the data to the other side
34
* @param type
35
* @param message
36
* @throws Exception
37
*/
38
public void send(String type, String message) throws Exception
39
{
40
oos.reset();
41
oos.writeObject(new DataFrame(type, message));
42
oos.flush();
43
}
44![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
45
/**
46
* getter
47
* @return ObjectInputStream
48
*/
49
public ObjectInputStream getOis()
50
{
51
return this.ois;
52
}
53![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
54
/**
55
* getter
56
* @return ObjectOutputStream
57
*/
58
public ObjectOutputStream getOos()
59
{
60
return this.oos;
61
}
62![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
63
/**
64
* getter
65
* @return Socket
66
*/
67
public Socket getSocket()
68
{
69
return this.socket;
70
}
71
}
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ClientGUI class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.awt.*;
4
import java.awt.event.*;
5
import javax.swing.*;
6
import java.util.*;
7![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
8
/**
9
* clientGUI class,that will allow the user to send the message,change room,and
10
* will update the information for the user
11
*
12
* @author
13
* @version 1.0
14
*/
15
public class ClientGUI extends JFrame
16
{
17
/**
18
* Attributes
19
*/
20
private static final long serialVersionUID = 1L;
21
private JPanel jContentPane = null;
22
private JDesktopPane jDesktopPane = null;
23
private JButton jButton = null;
24
private Client client;
25
private JTextArea jTextArea = null;
26
private JScrollPane jScrollPane = null;
27
private JList jRoomList = null;
28
private JList jChatterList = null;
29
private JScrollPane jRoomScrollPane = null;
30
private JScrollPane jChatterScrollPane = null;
31
private JTextArea jContentTextArea = null;
32
private JScrollPane jContentScrollPane = null;
33
private JLabel jRoomLabel = null;
34
private JLabel jChatterLabel = null;
35
36
/**
37
* This is the default constructor
38
*/
39
public ClientGUI(Client client)
40
{
41
super();
42
this.client = client;
43
initialize();
44
this.addWindowListener(new WindowAdapter()
45
{
46
public void windowClosing(WindowEvent e)
47
{
48
System.exit(0);// close the application,it will cause the
49
// socket to be closed
50
}
51
});
52
}
53
54
/**
55
* This method initializes this
56
*
57
* @return void
58
*/
59
private void initialize()
60
{
61
this.setSize(664, 365);
62
this.setContentPane(getJContentPane());
63
this.setTitle("JFrame");
64
}
65
66
/**
67
* This method initializes jContentPane
68
*
69
* @return javax.swing.JPanel
70
*/
71
private JPanel getJContentPane()
72
{
73
if(jContentPane == null)
74
{
75
jContentPane = new JPanel();
76
jContentPane.setLayout(new BorderLayout());
77
jContentPane.add(getJDesktopPane(), BorderLayout.CENTER);
78
}
79
return jContentPane;
80
}
81
82
/**
83
* This method initializes jDesktopPane
84
*
85
* @return javax.swing.JDesktopPane
86
*/
87
private JDesktopPane getJDesktopPane()
88
{
89
if(jDesktopPane == null)
90
{
91
jChatterLabel = new JLabel();
92
jChatterLabel.setBounds(new Rectangle(536, 19, 42, 14));
93
jChatterLabel.setForeground(Color.red);
94
jChatterLabel.setText("To:All");
95
jRoomLabel = new JLabel();
96
jRoomLabel.setBounds(new Rectangle(20, 17, 130, 14));
97
jRoomLabel.setForeground(Color.red);
98
jRoomLabel.setText("Current room:hall");
99
jDesktopPane = new JDesktopPane();
100
jDesktopPane.add(getJButton(), null);
101
jDesktopPane.add(getJScrollPane(), null);
102
jDesktopPane.add(getJRoomScrollPane(), null);
103
jDesktopPane.add(getJChatterScrollPane(), null);
104
jDesktopPane.add(getJContentScrollPane(), null);
105
jDesktopPane.add(jRoomLabel, null);
106
jDesktopPane.add(jChatterLabel, null);
107
}
108
return jDesktopPane;
109
}
110
111
/**
112
* This method initializes jButton
113
*
114
* @return javax.swing.JButton
115
*/
116
private JButton getJButton()
117
{
118
if(jButton == null)
119
{
120
jButton = new JButton();
121
jButton.setBounds(new Rectangle(281, 286, 72, 21));
122
jButton.setText("Send");
123
jButton.addActionListener(new java.awt.event.ActionListener()
124
{
125
public void actionPerformed(java.awt.event.ActionEvent e)
126
{
127
try
128
{
129
String name = jChatterLabel.getText()
130
.replace("To:", "");
131
if(name.equals("All"))// message to all the people in
132
// that room
133
{
134
client.send("Public", jContentTextArea.getText());
135
}
136
else
137
// private message to a certain person
138
{
139
name = name.split("-")[0];
140
client.send("Private" + name, jContentTextArea
141
.getText());
142
}
143
}
144
catch(Exception ex)
145
{
146
System.out.println(ex.getMessage());
147
JOptionPane.showMessageDialog(jContentPane,
148
"Network problem", "No Title",
149
JOptionPane.ERROR_MESSAGE);
150
}
151
jContentTextArea.setText("");// clean the input text
152
// field
153
}
154
});
155
}
156
return jButton;
157
}
158
159
/**
160
* This method initializes jTextArea
161
*
162
* @return javax.swing.JTextArea
163
*/
164
private JTextArea getJTextArea()
165
{
166
if(jTextArea == null)
167
{
168
jTextArea = new JTextArea();
169
}
170
return jTextArea;
171
}
172
173
/**
174
* This method initializes jScrollPane
175
*
176
* @return javax.swing.JScrollPane
177
*/
178
private JScrollPane getJScrollPane()
179
{
180
if(jScrollPane == null)
181
{
182
jScrollPane = new JScrollPane();
183
jScrollPane.setBounds(new Rectangle(159, 46, 321, 150));
184
jScrollPane.setViewportView(getJTextArea());
185
jScrollPane
186
.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
187
}
188
return jScrollPane;
189
}
190
191
public void setText(String message)
192
{
193
this.jTextArea.setText(this.jTextArea.getText() + "\n" + message);
194
}
195
196
public void setChatterList(Vector<String> vector)
197
{
198
jChatterList.setListData(vector);
199
}
200
201
/**
202
* This method initializes jRoomList
203
*
204
* @return javax.swing.JList
205
*/
206
private JList getJRoomList()
207
{
208
if(jRoomList == null)
209
{
210
jRoomList = new JList();
211
Vector<String> vector = new Vector<String>();
212
vector.addElement("Hall");
213
vector.addElement("General Blab");
214
vector.addElement("No Holds Barred");
215
vector.addElement("Buy, Sell & Trade");
216
vector.addElement("Political Debating");
217
vector.addElement("Motherboards, RAM and CPUs");
218
vector.addElement("Video Cards and Computer Graphics");
219
vector.addElement("Overclocking");
220
vector.addElement("Sound Cards and Audio Devices");
221
vector.addElement("Input, Imaging and Storage Devices");
222
vector.addElement("Cases and Power Supplies");
223
vector.addElement("Software Et Al");
224
vector.addElement("Games and Game Consoles");
225
vector.addElement("Linux & BSD");
226
vector.addElement("Networking");
227
vector.addElement("Movies, TV, Animation and Home Theater");
228
vector.addElement("Misc. or Unknown");
229
vector.addElement("Application Dev, Programming and Scripting");
230
jRoomList.setListData(vector);
231
jRoomList
232
.addListSelectionListener(new javax.swing.event.ListSelectionListener()
233
{
234
public void valueChanged(
235
javax.swing.event.ListSelectionEvent e)
236
{
237
if(e.getValueIsAdjusting())
238
return;// only responds once,ignore the "leave
239
// focus" event but responds for the
240
// "get focus" event
241
if(jRoomList.getSelectedIndex() == -1)
242
return;
243
try
244
{
245
jRoomLabel.setText("Current room:"
246
+ (String)jRoomList.getSelectedValue());
247
client.send("Room", (String)jRoomList
248
.getSelectedValue());// apply to
249
// change room
250
// to the server
251
}
252
catch(Exception ex)
253
{
254
JOptionPane.showMessageDialog(jContentPane,
255
"Network problem", "No Title",
256
JOptionPane.ERROR_MESSAGE);
257
}
258
}
259
});
260
}
261
return jRoomList;
262
}
263
264
/**
265
* This method initializes jChatterList
266
*
267
* @return javax.swing.JList
268
*/
269
private JList getJChatterList()
270
{
271
if(jChatterList == null)
272
{
273
jChatterList = new JList();
274
jChatterList
275
.addListSelectionListener(new javax.swing.event.ListSelectionListener()
276
{
277
public void valueChanged(
278
javax.swing.event.ListSelectionEvent e)
279
{
280
if(e.getValueIsAdjusting())
281
return;
282
if(jChatterList.getSelectedIndex() == -1)
283
return;
284
try
285
{
286
jChatterLabel.setText("To:"
287
+ (String)jChatterList
288
.getSelectedValue());//change the receiver
289
}
290
catch(Exception ex)
291
{
292
JOptionPane.showMessageDialog(jContentPane,
293
"Network problem", "No Title",
294
JOptionPane.ERROR_MESSAGE);
295
}
296
}
297
});
298
}
299
return jChatterList;
300
}
301
302
/**
303
* This method initializes jRoomScrollPane
304
*
305
* @return javax.swing.JScrollPane
306
*/
307
private JScrollPane getJRoomScrollPane()
308
{
309
if(jRoomScrollPane == null)
310
{
311
jRoomScrollPane = new JScrollPane();
312
jRoomScrollPane.setLocation(new Point(11, 42));
313
jRoomScrollPane.setViewportView(getJRoomList());
314
jRoomScrollPane.setSize(new Dimension(128, 240));
315
}
316
return jRoomScrollPane;
317
}
318
319
/**
320
* This method initializes jChatterScrollPane
321
*
322
* @return javax.swing.JScrollPane
323
*/
324
private JScrollPane getJChatterScrollPane()
325
{
326
if(jChatterScrollPane == null)
327
{
328
jChatterScrollPane = new JScrollPane();
329
jChatterScrollPane.setLocation(new Point(495, 42));
330
jChatterScrollPane.setViewportView(getJChatterList());
331
jChatterScrollPane.setSize(new Dimension(128, 240));
332
}
333
return jChatterScrollPane;
334
}
335
336
/**
337
* This method initializes jContentTextArea
338
*
339
* @return javax.swing.JTextArea
340
*/
341
private JTextArea getJContentTextArea()
342
{
343
if(jContentTextArea == null)
344
{
345
jContentTextArea = new JTextArea();
346
}
347
return jContentTextArea;
348
}
349
350
/**
351
* This method initializes jContentScrollPane
352
*
353
* @return javax.swing.JScrollPane
354
*/
355
private JScrollPane getJContentScrollPane()
356
{
357
if(jContentScrollPane == null)
358
{
359
jContentScrollPane = new JScrollPane();
360
jContentScrollPane.setBounds(new Rectangle(157, 215, 321, 56));
361
jContentScrollPane.setViewportView(getJContentTextArea());
362
}
363
return jContentScrollPane;
364
}
365
}
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ClientLogin class:
1
package networking;
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import java.awt.*;
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import javax.swing.*;
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import java.awt.Color;
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import java.awt.event.*;
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/**
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* clientlogin is the login gui class
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*
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* @author
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* @version 1.0
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*/
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public class ClientLogin extends JFrame
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{
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/**
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* Attributes
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*/
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private static final long serialVersionUID = 1L;
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private JPanel jContentPane = null;
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private JDesktopPane jDesktopPane = null;
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private JLabel jHostLabel = null;
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private JTextField jHostTextField = null;
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private JLabel jNameLabel = null;
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private JTextField jNameTextField = null;
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private JButton jButton = null;
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28
/**
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* This is the default constructor
30
*/
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public ClientLogin()
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{
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super();
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initialize();
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this.addWindowListener(new WindowAdapter()
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{
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public void windowClosing(WindowEvent e)
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{
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System.exit(0);
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}
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});
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}
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/**
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* This method initializes this
46
*
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* @return void
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*/
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private void initialize()
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{
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this.setSize(481, 290);
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this.setContentPane(getJContentPane());
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this.setTitle("JFrame");
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}
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/**
57
* This method initializes jContentPane
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*
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* @return javax.swing.JPanel
60
*/
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private JPanel getJContentPane()
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{
63
if(jContentPane == null)
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{
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jContentPane = new JPanel();
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jContentPane.setLayout(new BorderLayout());
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jContentPane.add(getJDesktopPane(), BorderLayout.CENTER);
68
}
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return jContentPane;
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}
71
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/**
73
* This method initializes jDesktopPane
74
*
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* @return javax.swing.JDesktopPane
76
*/
77
private JDesktopPane getJDesktopPane()
78
{
79
if(jDesktopPane == null)
80
{
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jNameLabel = new JLabel();
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jNameLabel.setBounds(new Rectangle(79, 117, 55, 14));
83
jNameLabel.setForeground(Color.red);
84
jNameLabel.setText("Your name:");
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jHostLabel = new JLabel();
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jHostLabel.setBounds(new Rectangle(79, 38, 39, 14));
87
jHostLabel.setForeground(Color.red);
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jHostLabel.setText("Host IP:");
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jDesktopPane = new JDesktopPane();
90
jDesktopPane.add(jHostLabel, null);
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jDesktopPane.add(getJHostTextField(), null);
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jDesktopPane.add(jNameLabel, null);
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jDesktopPane.add(getJNameTextField(), null);
94
jDesktopPane.add(getJButton(), null);
95
}
96
return jDesktopPane;
97
}
98
99
public JPanel getContentPane()
100
{
101
return this.jContentPane;
102
}
103
104
/**
105
* This method initializes jHostTextField
106
*
107
* @return javax.swing.JTextField
108
*/
109
private JTextField getJHostTextField()
110
{
111
if(jHostTextField == null)
112
{
113
jHostTextField = new JTextField();
114
jHostTextField.setBounds(new Rectangle(150, 38, 136, 20));
115
jHostTextField.setText("127.0.0.1");
116
}
117
return jHostTextField;
118
}
119
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/**
121
* This method initializes jNameTextField
122
*
123
* @return javax.swing.JTextField
124
*/
125
private JTextField getJNameTextField()
126
{
127
if(jNameTextField == null)
128
{
129
jNameTextField = new JTextField();
130
jNameTextField.setBounds(new Rectangle(149, 117, 137, 20));
131
}
132
return jNameTextField;
133
}
134
135
/**
136
* This method initializes jButton
137
*
138
* @return javax.swing.JButton
139
*/
140
private JButton getJButton()
141
{
142
if(jButton == null)
143
{
144
jButton = new JButton();
145
jButton.setBounds(new Rectangle(187, 168, 59, 23));
146
jButton.setText("Login");
147
jButton.addActionListener(new java.awt.event.ActionListener()
148
{
149
public void actionPerformed(java.awt.event.ActionEvent e)
150
{
151
try
152
{
153
// login
154
Client client = new Client(jHostTextField.getText(),
155
2008);
156
client.send("Login", jNameTextField.getText());
157
ClientGUI cg = new ClientGUI(client);
158
ClientThreadHandler cth = new ClientThreadHandler(
159
client.getSocket(), client.getOis(), cg,
160
ClientLogin.this);
161
Thread thread = new Thread(cth);
162
thread.start();// starts a thread to listen the
163
// responses from the server
164
}
165
catch(Exception ex)
166
{
167
JOptionPane.showMessageDialog(jContentPane,
168
"Wrong ip address", "No Title",
169
JOptionPane.ERROR_MESSAGE);
170
}
171
}
172
});
173
}
174
return jButton;
175
}
176
}
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ClientThreadHandler class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.io.*;
4
import java.net.*;
5
import java.util.*;
6
import javax.swing.JOptionPane;
7![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
8
/**
9
* client thread that will listent the responses from the server,and update the
10
* information to the gui class
11
*
12
* @author
13
* @version 1.0
14
*/
15
public class ClientThreadHandler implements Runnable
16
{
17
/**
18
* Attributes
19
*/
20
private Socket socket;
21
private ObjectInputStream ois;
22
private ClientGUI clientGUI;
23
private ClientLogin clientLogin;
24
25
/**
26
* Constructor
27
*/
28
public ClientThreadHandler(Socket socket, ObjectInputStream ois,
29
ClientGUI clientGUI, ClientLogin clientLogin)
30
{
31
this.socket = socket;
32
this.ois = ois;
33
this.clientGUI = clientGUI;
34
this.clientLogin = clientLogin;
35
}
36
37
/* (non-Javadoc)
38
* @see java.lang.Runnable#run()
39
*/
40
@SuppressWarnings("unchecked")
41
public void run()
42
{
43
while(true)
44
{
45
try
46
{
47
try
48
{
49
DataFrame df = (DataFrame)ois.readObject();
50
if(df.getType().equals("Error"))
51
{
52
String error = (String)df.getObject();
53
if(error.equals("Name already exists"))//name exists
54
{
55
JOptionPane.showMessageDialog(clientLogin
56
.getContentPane(), error, "No Title",
57
JOptionPane.ERROR_MESSAGE);
58
clientLogin.setVisible(true);
59
clientGUI.setVisible(false);
60
}
61
else if(error.equals("IP and port already exist"))//ip and port exist
62
{
63
JOptionPane.showMessageDialog(clientLogin
64
.getContentPane(), error, "No Title",
65
JOptionPane.ERROR_MESSAGE);
66
clientLogin.setVisible(true);
67
clientGUI.setVisible(false);
68
}
69
}
70
else//ok to login
71
{
72
clientLogin.setVisible(false);
73
clientGUI.setVisible(true);
74
}
75
if(df.getType().equals("Message"))//message from the server
76
{
77
clientGUI.setText((String)df.getObject());
78
}
79
else if(df.getType().startsWith("UserList"))//userlist from the server
80
{
81
ArrayList<Chatter> al = (ArrayList<Chatter>)df
82
.getObject();
83
Vector<String> vector = new Vector<String>();
84
vector.addElement("All");//always add "All" option for the user
85
for(int i = 0; i < al.size(); i++)
86
{
87
vector.addElement(al.get(i).getName() + "-("
88
+ al.get(i).getRoom() + ")");
89
}
90
clientGUI.setChatterList(vector);
91
}
92
}
93
catch(Exception e)
94
{
95
socket.close();
96
}
97
}
98
catch(IOException e)
99
{
100
}
101
}
102
}
103
}
104![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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Coordinator class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.io.IOException;
4
import java.io.InterruptedIOException;
5
import java.io.ObjectOutputStream;
6
import java.net.*;
7
import java.util.*;
8![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
9
/**
10
* coordinator class that works as a coordinator,which will notice the users
11
* when a new user login or logout,or a user wants to send a message,etc
12
*
13
* @author
14
* @version 1.0
15
*/
16
public class Coordinator
17
{
18
/**
19
* Attributes
20
*/
21
private ArrayList<Caller> callers;
22
private MessageCenter mc;
23
public static Coordinator coordinator;
24
private class MessageCenter extends Observable
25
{
26
public void setChanged()
27
{
28
super.setChanged();
29
}
30
}
31
32
/**
33
* method that will return all the sockets connected
34
*
35
* @return
36
*/
37
public ArrayList<Socket> getSockets()
38
{
39
ArrayList<Socket> sockets = new ArrayList<Socket>();
40
synchronized(callers)// add a lock,to make sure that when one thread
41
// is dealing with the list,other threads which
42
// want to change the list must wait
43
{
44
for(int i = 0; i < callers.size(); i++)
45
{
46
sockets.add(callers.get(i).getSocket());
47
}
48
}
49
return sockets;
50
}
51
52
/**
53
* Constructor
54
*/
55
private Coordinator()
56
{
57
callers = new ArrayList<Caller>();
58
mc = new MessageCenter();
59
}
60
61
/**
62
* Singleton pattern that will only hold one instance of this class
63
*
64
* @return Coordinator
65
*/
66
public static Coordinator getCoordinator()
67
{
68
if(coordinator == null)
69
{
70
coordinator = new Coordinator();
71
}
72
return coordinator;
73
}
74
75
/**
76
* method that will send a private message from the sender to the receiver
77
*
78
* @param message
79
* @param receiver
80
* @param sender
81
*/
82
public void sendPrivateMessage(String message, Chatter receiver,
83
Chatter sender)
84
{
85
if(message == null)
86
{
87
return;
88
}
89
if(receiver == null)// no such a receiver in the user list
90
{
91
synchronized(callers)// lock to protect the data integrity
92
{
93
for(Caller caller: callers)
94
{
95
if(caller.getSocket().getInetAddress().toString().equals(
96
sender.getIP()))// ip is the same
97
{
98
if(caller.getSocket().getPort() == sender.getPort())// port
99
// is
100
// the
101
// same
102
{
103
try
104
{
105
try
106
{
107
ObjectOutputStream oos = caller
108
.getObjectOutputStream();
109
oos.reset();
110
oos.writeObject(new DataFrame("Error",
111
"No such name"));// send error
112
// message back
113
// to the sender
114
oos.flush();
115
}
116
catch(InterruptedIOException iioe)
117
{
118
synchronized(this)
119
{
120
Chatter chatter = Secretary
121
.getSecretary().findChatter(
122
caller.getSocket());
123
Secretary.getSecretary().deleteRecord(
124
caller.getSocket());
125
this.notifyOffline(caller, chatter
126
.getRoom());
127
}
128
caller.getSocket().close();
129
}
130
catch(IOException e)
131
{
132
synchronized(this)
133
{
134
Chatter chatter = Secretary
135
.getSecretary().findChatter(
136
caller.getSocket());
137
Secretary.getSecretary().deleteRecord(
138
caller.getSocket());
139
this.notifyOffline(caller, chatter
140
.getRoom());
141
}
142
caller.getSocket().close();
143
}
144
}
145
catch(IOException e)
146
{
147
}
148
}
149
}
150
}
151
}
152
}
153
else
154
// the receiver exists
155
{
156
synchronized(callers)// lock to protect the data integrity
157
{
158
for(Caller caller: callers)
159
{
160
if(caller.getSocket().getInetAddress().toString().equals(
161
receiver.getIP()))
162
{
163
if(caller.getSocket().getPort() == receiver.getPort())
164
{
165
try
166
{
167
try
168
{
169
ObjectOutputStream oos = caller
170
.getObjectOutputStream();
171
oos.reset();
172
oos.writeObject(new DataFrame("Message",
173
"From " + sender.getName() + " To "
174
+ receiver.getName() + ": "
175
+ message));// send the
176
// private
177
// message
178
oos.flush();
179
}
180
catch(InterruptedIOException iioe)// time is
181
// up
182
{
183
synchronized(this)
184
{
185
Chatter chatter = Secretary
186
.getSecretary().findChatter(
187
caller.getSocket());
188
Secretary.getSecretary().deleteRecord(
189
caller.getSocket());
190
this.notifyOffline(caller, chatter
191
.getRoom());
192
}
193
caller.getSocket().close();
194
}
195
catch(IOException e)// disconnected
196
{
197
synchronized(this)
198
{
199
Chatter chatter = Secretary
200
.getSecretary().findChatter(
201
caller.getSocket());
202
Secretary.getSecretary().deleteRecord(
203
caller.getSocket());
204
this.notifyOffline(caller, chatter
205
.getRoom());
206
}
207
caller.getSocket().close();
208
}
209
}
210
catch(IOException e)
211
{
212
}
213
}
214
}
215
}
216
}
217
}
218
}
219
220
/**
221
* method that will send the public message to all the people in that room
222
*
223
* @param chatter
224
* @param message
225
*/
226
public void sendPublicMessage(Chatter chatter, String message)
227
{
228
if(message == null)
229
{
230
return;
231
}
232
ArrayList<Caller> disconnects = new ArrayList<Caller>();
233
synchronized(callers)// lock to protect the data integrity
234
{
235
for(Caller caller: callers)
236
{
237
Chatter targetChatter = Secretary.getSecretary().findChatter(
238
caller.getSocket());
239
if(targetChatter.getRoom().equals(chatter.getRoom()))
240
{
241
try
242
{
243
ObjectOutputStream oos = caller.getObjectOutputStream();
244
oos.reset();
245
oos.writeObject(new DataFrame("Message", "From "
246
+ chatter.getName() + " To " + "all" + ": "
247
+ message));// send the public message
248
oos.flush();
249
}
250
catch(InterruptedIOException iioe)
251
{
252
disconnects.add(caller);
253
}
254
catch(IOException e)
255
{
256
disconnects.add(caller);
257
}
258
}
259
}
260
}
261
for(Caller caller: disconnects)
262
{
263
try
264
{
265
synchronized(this)
266
{
267
Chatter targetChatter = Secretary.getSecretary()
268
.findChatter(caller.getSocket());
269
Secretary.getSecretary().deleteRecord(caller.getSocket());
270
this.notifyOffline(caller, targetChatter.getRoom());// notify
271
// the
272
// users
273
// that
274
// this
275
// user has left
276
}
277
caller.getSocket().close();
278
}
279
catch(IOException e)
280
{
281
}
282
}
283
}
284
285
/**
286
* method that will notify all the people in the user's previous room that
287
* the user has left,and it will notify all the people in the user's next
288
* room that the user has joined,and it will also notify the people in the
289
* hall that the user has changed his room
290
*
291
* @param previousRoom
292
* @param nextRoom
293
*/
294
public void updateRooms(String previousRoom, String nextRoom)
295
{
296
synchronized(this.mc)
297
{
298
this.mc.setChanged();
299
this.mc.notifyObservers(previousRoom);
300
this.mc.setChanged();
301
this.mc.notifyObservers(nextRoom);
302
}
303
}
304
305
/**
306
* method that will find the chatter through the socket
307
*
308
* @param socket
309
* @return
310
*/
311
public Caller findCaller(Socket socket)
312
{
313
synchronized(callers)
314
{
315
for(Caller caller: callers)
316
{
317
if(caller.getSocket().getInetAddress().equals(
318
socket.getInetAddress())
319
&& caller.getSocket().getPort() == socket.getPort())
320
{
321
return caller;
322
}
323
}
324
}
325
return null;
326
}
327
328
/**
329
* method that will notify all the people in the hall that a new user has
330
* joined
331
*
332
* @param caller
333
*/
334
public void notifyOnline(Caller caller)
335
{
336
if(caller != null)
337
{
338
synchronized(this)
339
{
340
synchronized(this.callers)
341
{
342
this.callers.add(caller);
343
}
344
synchronized(this.mc)
345
{
346
this.mc.addObserver(caller);
347
this.mc.setChanged();
348
this.mc.notifyObservers("Hall");
349
}
350
}
351
}
352
}
353
354
/**
355
* method that will notify the people in the user's room that he has
356
* left,and it will also notify all the people in the hall that the user has
357
* left
358
*
359
* @param caller
360
* @param room
361
*/
362
public void notifyOffline(Caller caller, String room)
363
{
364
if(caller != null)
365
{
366
synchronized(this)
367
{
368
synchronized(this.callers)
369
{
370
this.callers.remove(caller);
371
}
372
synchronized(this.mc)
373
{
374
this.mc.deleteObserver(caller);
375
this.mc.setChanged();
376
this.mc.notifyObservers(room);
377
}
378
}
379
}
380
}
381
382
/**
383
* method that will return the count of all the callers(connected endpoint)
384
*
385
* @return
386
*/
387
public int count()
388
{
389
synchronized(this.callers)
390
{
391
return this.callers.size();
392
}
393
}
394
}
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DataFrame class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.io.*;
4![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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/**
6
* class that will be used to transport through the network
7
*
8
* @author
9
* @version 1.0
10
*/
11
@SuppressWarnings("serial")
12
public class DataFrame implements Serializable
13
{
14
/**
15
* Attributes
16
*/
17
private String type;
18
private Object object;
19
20
/**
21
* Constructor
22
*/
23
public DataFrame(String type, Object object)
24
{
25
this.type = type;
26
this.object = object;
27
}
28
29
/**
30
* getter
31
*
32
* @return Objecct
33
*/
34
public Object getObject()
35
{
36
return this.object;
37
}
38
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/**
40
* getter
41
*
42
* @return String
43
*/
44
public String getType()
45
{
46
return this.type;
47
}
48
}
49![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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Secretary class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.net.Socket;
4
import java.util.*;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
/**
7
* class that will hold all the current connected chatter's information
8
*
9
* @author
10
* @version 1.0
11
*/
12
public class Secretary
13
{
14
/**
15
* Attributes
16
*/
17
private ArrayList<Chatter> register;
18
private static Secretary secretary;
19
20
/**
21
* Constructor
22
*/
23
private Secretary()
24
{
25
register = new ArrayList<Chatter>();
26
}
27
28
/**
29
* singleton pattern that will only hold one instance of this class
30
*
31
* @return
32
*/
33
public static Secretary getSecretary()
34
{
35
if(secretary == null)
36
{
37
secretary = new Secretary();
38
}
39
return secretary;
40
}
41
42
/**
43
* method that will add the record to the list
44
*
45
* @param socket
46
* @param name
47
*/
48
public void addRecord(Socket socket, String name)
49
{
50
Chatter chatter = new Chatter(socket, name);
51
synchronized(this.register)
52
{
53
this.register.add(chatter);
54
}
55
}
56
57
/**
58
* method that will delete the record in the list
59
*
60
* @param socket
61
*/
62
public void deleteRecord(Socket socket)
63
{
64
synchronized(this.register)
65
{
66
Chatter targetChatter = null;
67
for(Chatter chatter: this.register)
68
{
69
if(chatter.getIP().equals(socket.getInetAddress().toString()))
70
{
71
if(chatter.getPort() == socket.getPort())
72
{
73
targetChatter = chatter;
74
}
75
}
76
}
77
if(targetChatter != null)
78
{
79
this.register.remove(targetChatter);
80
}
81
}
82
}
83
84
/**
85
* method that will find the chatter through his name
86
*
87
* @param name
88
* @return
89
*/
90
public Chatter findChatter(String name)
91
{
92
synchronized(this.register)
93
{
94
for(Chatter chatter: this.register)
95
{
96
if(chatter.getName().equals(name))
97
{
98
return chatter;
99
}
100
}
101
}
102
return null;
103
}
104
105
/**
106
* method that will find the chatter through his ip and port
107
*
108
* @param socket
109
* @return
110
*/
111
public Chatter findChatter(Socket socket)
112
{
113
synchronized(this.register)
114
{
115
for(Chatter chatter: this.register)
116
{
117
if(chatter.getIP().equals(socket.getInetAddress().toString()))
118
{
119
if(chatter.getPort() == socket.getPort())
120
{
121
return chatter;
122
}
123
}
124
}
125
}
126
return null;
127
}
128
129
/**
130
* method that will check to see if the name has existed or not
131
*
132
* @param name
133
* @return
134
*/
135
public boolean isExist(String name)
136
{
137
synchronized(this.register)
138
{
139
for(Chatter chatter: this.register)
140
{
141
if(chatter.getName().equals(name))
142
{
143
return true;
144
}
145
}
146
}
147
return false;
148
}
149
150
/**
151
* method that will return the list of all the chatters
152
*
153
* @return
154
*/
155
public ArrayList<Chatter> getRegister()
156
{
157
return this.register;
158
}
159
160
/**
161
* method that will return the list of all the chatters in the particular
162
* room
163
*
164
* @param room
165
* @return
166
*/
167
public ArrayList<Chatter> getRegister(String room)
168
{
169
ArrayList<Chatter> roomRegister = new ArrayList<Chatter>();
170
synchronized(this.register)
171
{
172
if(room.equals("Hall"))
173
{
174
return this.register;
175
}
176
else
177
{
178
for(Chatter chatter: this.register)
179
{
180
if(chatter.getRoom().equals(room))
181
{
182
roomRegister.add(chatter);
183
}
184
}
185
}
186
}
187
return roomRegister;
188
}
189
}
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Server class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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import java.io.*;
4
import java.net.*;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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/**
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* method that will start the server,and begin to listen to the connection
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* requests and create new threads to deal with those requests
9
*
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* @author
11
* @version 1.0
12
*/
13
public class Server
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{
15
/**
16
* Attributes
17
*/
18
private ServerSocket ss;
19
private static final int BIND_PORT = 2008;
20
private static final int MAX_CONNECTIONS = 1000;
21
private static ThreadGroup connections = new ThreadGroup("connections");
22
private ServerGUI serverGUI;
23
24
/**
25
* Constructor
26
*/
27
public Server(ServerGUI serverGUI)
28
{
29
this.serverGUI = serverGUI;
30
}
31
32
/**
33
* method to start the server
34
*/
35
public void run()
36
{
37
try
38
{
39
ss = new ServerSocket(BIND_PORT);
40
while(true)
41
{
42
try
43
{
44
Socket socket = ss.accept();
45
if(connections.activeCount() >= MAX_CONNECTIONS)// if the
46
// server
47
// has
48
// reached
49
// the max
50
// connections,then
51
// drop the
52
// request
53
{
54
socket.close();
55
}
56
else
57
{
58
ServerThreadHandler sth = new ServerThreadHandler(
59
socket, serverGUI);
60
Thread thread = new Thread(connections, sth);
61
thread.start();// create new thread to deal with the
62
// new connection
63
}
64
}
65
catch(IOException e)
66
{
67
continue;
68
}
69
}
70
}
71
catch(IOException e)
72
{
73
}
74
}
75
76
/**
77
* main method to start the application
78
*
79
* @param args
80
*/
81
public static void main(String[] args)
82
{
83
ServerGUI serverGUI = new ServerGUI();
84
serverGUI.setVisible(true);
85
Server server = new Server(serverGUI);
86
server.run();
87
}
88
}
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ServerGUI class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.awt.*;
4
import javax.swing.*;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
/**
7
* server gui class that will display the updated information
8
* @author
9
* @version 1.0
10
*/
11
public class ServerGUI extends JFrame
12
{
13
/**
14
* Attributes
15
*/
16
private static final long serialVersionUID = 1L;
17
private JPanel jContentPane = null;
18
private JDesktopPane jDesktopPane = null;
19
private JScrollPane jScrollPane = null;
20
private JTextArea jTextArea = null;
21
22
/**
23
* This is the default constructor
24
*/
25
public ServerGUI()
26
{
27
super();
28
initialize();
29
}
30
31
/**
32
* This method initializes this
33
*
34
* @return void
35
*/
36
private void initialize()
37
{
38
this.setSize(579, 356);
39
this.setContentPane(getJContentPane());
40
this.setTitle("JFrame");
41
}
42
43
/**
44
* This method initializes jContentPane
45
*
46
* @return javax.swing.JPanel
47
*/
48
private JPanel getJContentPane()
49
{
50
if(jContentPane == null)
51
{
52
jContentPane = new JPanel();
53
jContentPane.setLayout(new BorderLayout());
54
jContentPane.add(getJDesktopPane(), BorderLayout.CENTER);
55
}
56
return jContentPane;
57
}
58
59
/**
60
* This method initializes jDesktopPane
61
*
62
* @return javax.swing.JDesktopPane
63
*/
64
private JDesktopPane getJDesktopPane()
65
{
66
if(jDesktopPane == null)
67
{
68
jDesktopPane = new JDesktopPane();
69
jDesktopPane.add(getJScrollPane(), null);
70
}
71
return jDesktopPane;
72
}
73
74
/**
75
* This method initializes jScrollPane
76
*
77
* @return javax.swing.JScrollPane
78
*/
79
private JScrollPane getJScrollPane()
80
{
81
if(jScrollPane == null)
82
{
83
jScrollPane = new JScrollPane();
84
jScrollPane.setBounds(new Rectangle(96, 14, 391, 266));
85
jScrollPane.setViewportView(getJTextArea());
86
}
87
return jScrollPane;
88
}
89
90
/**
91
* This method initializes jTextArea
92
*
93
* @return javax.swing.JTextArea
94
*/
95
private JTextArea getJTextArea()
96
{
97
if(jTextArea == null)
98
{
99
jTextArea = new JTextArea();
100
}
101
return jTextArea;
102
}
103
104
/**
105
* method to add the text to the text field in the gui
106
* @param text
107
*/
108
public void addText(String text)
109
{
110
if(this.jTextArea.getText().equals(""))
111
{
112
this.jTextArea.setText(text);
113
}
114
else
115
{
116
this.jTextArea.setText(this.jTextArea.getText() + "\n" + text);
117
}
118
}
119
}
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ServerThreadHandler class:
1
package networking;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
import java.io.*;
4
import java.net.*;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
/**
7
* class that has the run method that the thread will use
8
*
9
* @author
10
* @version 1.0
11
*/
12
public class ServerThreadHandler implements Runnable
13
{
14
/**
15
* Attributes
16
*/
17
private Socket socket;
18
private ServerGUI serverGUI;
19
private static final int TIMEOUT_LENGTH = 300000;
20
21
/**
22
* Constructor
23
*/
24
public ServerThreadHandler(Socket socket, ServerGUI serverGUI)
25
{
26
this.socket = socket;
27
try
28
{
29
this.socket.setSoTimeout(TIMEOUT_LENGTH);
30
}
31
catch(SocketException se)
32
{
33
}
34
this.serverGUI = serverGUI;
35
}
36
37
/*
38
* (non-Javadoc)
39
*
40
* @see java.lang.Runnable#run()
41
*/
42
public void run()
43
{
44
try
45
{
46
ObjectInputStream ois = new ObjectInputStream(socket
47
.getInputStream());
48
ObjectOutputStream oos = new ObjectOutputStream(socket
49
.getOutputStream());
50
try
51
{
52
while(true)
53
{
54
DataFrame df = (DataFrame)ois.readObject();
55
if(df.getType().equals("Login"))
56
{
57
String name = (String)df.getObject();
58
if(Secretary.getSecretary().isExist(name))
59
{
60
oos.reset();
61
oos.writeObject(new DataFrame("Error",
62
"Name already exists"));// name exists
63
oos.flush();
64
}
65
else if(Coordinator.getCoordinator().findCaller(socket) != null)
66
{
67
oos.reset();
68
oos.writeObject(new DataFrame("Error",
69
"IP and port already exist"));// ip and
70
// port
71
// exist
72
oos.flush();
73
}
74
else
75
{
76
Secretary.getSecretary().addRecord(socket, name);
77
Coordinator.getCoordinator().notifyOnline(
78
new Caller(socket, oos));
79
this.serverGUI.addText(name + " logined");// login
80
// request
81
}
82
continue;
83
}
84
if(Coordinator.getCoordinator().findCaller(socket) == null)
85
{
86
oos.reset();
87
oos.writeObject(new DataFrame("Error",
88
"Must login first"));// login validation
89
oos.flush();
90
}
91
else if(df.getType().equals("Room"))
92
{
93
String nextRoom = (String)df.getObject();
94
Chatter chatter = Secretary.getSecretary().findChatter(
95
socket);
96
String previousRoom = chatter.getRoom();
97
chatter.setRoom(nextRoom);
98
Coordinator.getCoordinator().updateRooms(previousRoom,
99
nextRoom);
100
this.serverGUI.addText(chatter.getName()
101
+ " changed room to" + chatter.getRoom());// change
102
// room
103
// request
104
}
105
else if(df.getType().equals("Public"))
106
{
107
String message = (String)df.getObject();
108
Chatter chatter = Secretary.getSecretary().findChatter(
109
socket);
110
Coordinator.getCoordinator().sendPublicMessage(chatter,
111
message);
112
this.serverGUI.addText(chatter.getName()
113
+ " sent public message:" + message);// send
114
// public
115
// message
116
// request
117
}
118
else if(df.getType().startsWith("Private"))
119
{
120
Chatter sender = Secretary.getSecretary().findChatter(
121
socket);
122
String name = df.getType().replaceFirst("Private", "");
123
Chatter receiver = Secretary.getSecretary()
124
.findChatter(name);
125
String message = (String)df.getObject();
126
Coordinator.getCoordinator().sendPrivateMessage(
127
message, receiver, sender);
128
this.serverGUI.addText(sender.getName()
129
+ " sent private message:" + message + " to:"
130
+ receiver.getName());// send private message
131
// request
132
}
133
else if(df.getType().equals("Logout"))
134
{
135
synchronized(Coordinator.getCoordinator())
136
{
137
Chatter chatter = Secretary.getSecretary()
138
.findChatter(socket);
139
Secretary.getSecretary().deleteRecord(socket);
140
Coordinator.getCoordinator().notifyOffline(
141
Coordinator.getCoordinator().findCaller(
142
socket), chatter.getRoom());
143
this.serverGUI.addText(chatter.getName()
144
+ " loged out");// logout request
145
}
146
}
147
else
148
{
149
oos.reset();
150
oos.writeObject(new DataFrame("Error", df.getType()));
151
oos.flush();
152
}
153
}
154
}
155
catch(ClassNotFoundException e)
156
{
157
if(Coordinator.getCoordinator().findCaller(socket) != null)
158
{
159
synchronized(Coordinator.getCoordinator())
160
{
161
Chatter chatter = Secretary.getSecretary().findChatter(
162
socket);
163
Secretary.getSecretary().deleteRecord(socket);
164
Coordinator.getCoordinator()
165
.notifyOffline(
166
Coordinator.getCoordinator()
167
.findCaller(socket),
168
chatter.getRoom());
169
this.serverGUI
170
.addText(chatter.getName() + " loged out");// exception
171
// that
172
// will
173
// notify
174
// the
175
// other
176
// chatters
177
}
178
}
179
socket.close();
180
}
181
catch(InterruptedIOException iioe)
182
{
183
if(Coordinator.getCoordinator().findCaller(socket) != null)
184
{
185
synchronized(Coordinator.getCoordinator())
186
{
187
Chatter chatter = Secretary.getSecretary().findChatter(
188
socket);
189
Secretary.getSecretary().deleteRecord(socket);
190
Coordinator.getCoordinator()
191
.notifyOffline(
192
Coordinator.getCoordinator()
193
.findCaller(socket),
194
chatter.getRoom());
195
this.serverGUI
196
.addText(chatter.getName() + " loged out");// exception
197
// that
198
// will
199
// notify
200
// the
201
// other
202
// users
203
}
204
}
205
socket.close();
206
}
207
catch(IOException ioe)
208
{
209
if(Coordinator.getCoordinator().findCaller(socket) != null)
210
{
211
synchronized(Coordinator.getCoordinator())
212
{
213
Chatter chatter = Secretary.getSecretary().findChatter(
214
socket);
215
Secretary.getSecretary().deleteRecord(socket);
216
Coordinator.getCoordinator()
217
.notifyOffline(
218
Coordinator.getCoordinator()
219
.findCaller(socket),
220
chatter.getRoom());
221
this.serverGUI
222
.addText(chatter.getName() + " loged out");// exception
223
}
224
}
225
socket.close();
226
}
227
}
228
catch(IOException ioe)
229
{
230
}
231
}
232
}
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