基于TCP的聊天程序

服务器代码：

Code:

1. packagecn.itcast.chat;
3. importjava.awt.Frame;
4. importjava.awt.TextArea;
5. importjava.awt.event.WindowAdapter;
6. importjava.awt.event.WindowEvent;
7. importjava.io.BufferedReader;
8. importjava.io.IOException;
9. importjava.io.InputStreamReader;
10. importjava.io.PrintWriter;
11. importjava.net.ServerSocket;
12. importjava.net.Socket;
13. importjava.util.ArrayList;
14. importjava.util.List;
16. publicclassChatServer{
18. privateFrameframe;
19. privateTextAreainfoArea;
20. privateList<Socket>list;
21. publicChatServer(){
22. list=newArrayList();
23. init();
24. }
26. publicvoidinit(){
27. frame=newFrame("聊天的服务端");
28. frame.setBounds(300,200,400,400);
29. infoArea=newTextArea();
31. frame.add(infoArea);
33. myEvent();
34. frame.setVisible(true);
35. }
37. publicvoidmyEvent(){
38. frame.addWindowListener(newWindowAdapter(){
41. @Override
42. publicvoidwindowClosing(WindowEvente){
45. for(Sockets:list){
46. try{
47. s.shutdownOutput();
48. }catch(IOExceptione1){
49. System.out.println("servershutout");
50. }
51. }
52. System.exit(0);
53. }
55. });
56. }
58. publicvoidconnection(){
59. try{
60. ServerSocketss=newServerSocket(30000);
62. while(true){
63. Socketsocket=ss.accept();
64. Stringip=socket.getInetAddress().getHostAddress();
65. list.add(socket);
66. infoArea.append(ip+"已进入到聊天室/r/n");
67. ServerThreadst=newServerThread(list,socket,infoArea);
68. newThread(st).start();
69. }
70. }catch(IOExceptione){
71. System.out.println("监听端口失败");
72. }
73. }
74. publicstaticvoidmain(String[]args){
75. newChatServer().connection();
76. }
78. }
81. classServerThreadimplementsRunnable{
83. privateSocketsocket;
84. privateList<Socket>list;
85. privateTextAreainfoArea;
86. publicServerThread(List<Socket>list,Socketsocket,TextAreainfoArea){
88. this.list=list;
89. this.socket=socket;
90. this.infoArea=infoArea;
91. }
93. @Override
94. publicvoidrun(){
96. try{
98. Stringip=socket.getInetAddress().getHostAddress();
99. BufferedReaderbufr=
100. newBufferedReader(newInputStreamReader(socket.getInputStream()));
102. Stringline=null;
103. while((line=bufr.readLine())!=null){
105. for(Sockets:list){
106. PrintWriterout=newPrintWriter(s.getOutputStream(),true);
107. out.println(ip+":"+line);
108. }
110. }
112. if(socket!=null){
113. socket.close();
114. infoArea.append(ip+"已离开聊天室！！！！！！/r/n");
115. list.remove(socket);
116. }
118. }catch(IOExceptione){
119. System.out.println("serverthreadexception"+e.toString());
120. }
121. }
123. }

客户端代码：

Code:

1. packagecn.itcast.chat;
3. importjava.awt.Button;
4. importjava.awt.Color;
5. importjava.awt.FlowLayout;
6. importjava.awt.Frame;
7. importjava.awt.TextArea;
8. importjava.awt.event.ActionEvent;
9. importjava.awt.event.ActionListener;
10. importjava.awt.event.WindowAdapter;
11. importjava.awt.event.WindowEvent;
12. importjava.io.BufferedReader;
13. importjava.io.IOException;
14. importjava.io.InputStreamReader;
15. importjava.io.PrintWriter;
16. importjava.net.Socket;
17. importjava.net.UnknownHostException;
19. publicclassChatClient{
21. privateFrameframe;
22. privateTextAreareceArea,sendArea;
23. privateButtonsendBut;
24. privateSocketsocket;
25. publicChatClient(){
26. init();
29. }
31. publicvoidinit(){
32. frame=newFrame("聊天的客户端");
33. frame.setBounds(300,200,500,420);
34. frame.setLayout(newFlowLayout(FlowLayout.RIGHT));
36. receArea=newTextArea(14,65);
37. receArea.setEditable(false);
38. receArea.setBackground(Color.white);
39. sendArea=newTextArea(6,65);
41. sendBut=newButton("发送");
43. sendBut.setEnabled(false);
44. frame.add(receArea);
45. frame.add(sendArea);
46. frame.add(sendBut);
48. myEvent();
51. frame.setResizable(false);
52. frame.setVisible(true);
54. initConnection();
55. }
56. publicvoidmyEvent(){
57. sendBut.addActionListener(newActionListener(){
59. @Override
60. publicvoidactionPerformed(ActionEvente){
62. if(socket!=null&&socket.isClosed()){
63. receArea.append("通讯中断");
64. sendBut.setEnabled(false);
65. return;
66. }
68. Stringtext=sendArea.getText();
69. try{
70. PrintWriterout=newPrintWriter(socket.getOutputStream(),true);
72. out.println(text);
73. }catch(IOExceptione1){
75. }
77. sendArea.setText("");
78. }
79. });
83. frame.addWindowListener(newWindowAdapter(){
85. @Override
86. publicvoidwindowOpened(WindowEvente){
88. sendArea.requestFocus();
89. }
91. @Override
92. publicvoidwindowClosing(WindowEvente){
94. if(socket!=null){
95. try{
96. socket.shutdownOutput();
97. }catch(IOExceptione1){
98. System.out.println("shutout");
99. }
100. }
102. System.exit(0);
103. }
105. });
106. }
109. publicvoidinitConnection(){
110. try{
111. socket=newSocket("192.168.1.254",30000);
112. }catch(UnknownHostExceptione){
113. receArea.append("未知主机");return;
114. }catch(IOExceptione){
115. receArea.append("网络服务失败");return;
116. }
117. sendBut.setEnabled(true);
119. ClientThreadct=newClientThread(socket,receArea);
120. newThread(ct).start();
121. }
123. publicstaticvoidmain(String[]args){
124. newChatClient();
125. }
127. }
130. classClientThreadimplementsRunnable{
131. privateSocketsocket;
132. privateTextAreareceArea;
134. ClientThread(Socketsocket,TextAreareceArea){
135. this.socket=socket;
136. this.receArea=receArea;
137. }
138. @Override
139. publicvoidrun(){
140. BufferedReaderbufr=null;
141. try{
142. bufr=
143. newBufferedReader(newInputStreamReader(socket.getInputStream()));
145. Stringline=null;
146. while((line=bufr.readLine())!=null){
147. receArea.append(line+"/r/n");
148. }
150. if(socket!=null){
151. socket.close();
152. }
153. }catch(IOExceptione){
154. System.out.println("clientthreadexception"+e.toString());
155. }
156. }
158. }