java 控制台聊天窗 java聊天窗口代码

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mob64ca1412b28c 2024-08-29 11:36:27
文章标签 java 控制台聊天窗聊天 java socket string 文章分类 Java 后端开发
import java.applet.*; 
import java.awt.*; 
import java.io.*; 
import java.net.*; 
import java.awt.event.*; 
public class ChatClient extends Applet{ 
protected boolean loggedIn;//登入状态 
protected Frame cp;//聊天室框架 
protected static int PORTNUM=7777; //缺省端口号7777 
protected int port;//实际端口号 
protected Socket sock; 
protected BufferedReader is;//用于从sock读取数据的BufferedReader 
protected PrintWriter pw;//用于向sock写入数据的PrintWriter 
protected TextField tf;//用于输入的TextField 
protected TextArea ta;//用于显示对话的TextArea 
protected Button lib;//登入按钮 
protected Button lob;//登出的按钮 
final static String TITLE ="Chatroom applet>>>>>>>>>>>>>>>>>>>>>>>>"; 
protected String paintMessage;//发表的消息 
public ChatParameter Chat; 
public void init(){ 
paintMessage="正在生成聊天窗口"; 
repaint(); 
cp=new Frame(TITLE); 
cp.setLayout(new BorderLayout()); 
String portNum=getParameter("port");//呢个参数勿太明 
port=PORTNUM; 
if (portNum!=null) //书上是portNum==null,十分有问题 
port=Integer.parseInt(portNum); 
//CGI 
ta=new TextArea(14,80); 
ta.setEditable(false);//read only attribute 
ta.setFont(new Font("Monospaced",Font.PLAIN,11)); 
cp.add(BorderLayout.NORTH,ta); 
Panel p=new Panel(); 
Button b; 
//for login button 
p.add(lib=new Button("Login")); 
lib.setEnabled(true); 
lib.requestFocus(); 
lib.addActionListener(new ActionListener() { 
public void actionPerformed(ActionEvent e){ 
login(); 
lib.setEnabled(false); 
lob.setEnabled(true); 
tf.requestFocus();//将键盘输入锁定再右边的文本框中 
} 
}); 
//for logout button 
p.add(lob=new Button ("Logout")); 
lob.setEnabled(false); 
lob.addActionListener(new ActionListener(){ 
public void actionPerformed(ActionEvent e){ 
logout(); 
lib.setEnabled(true); 
lob.setEnabled(false); 
lib.requestFocus(); 
} 
}); 
p.add(new Label ("输入消息:")); 
tf=new TextField(40); 
tf.addActionListener(new ActionListener(){ 
public void actionPerformed(ActionEvent e){ 
if(loggedIn){ 
//pw.println(Chat.CMD_BCAST+tf.getText());//Chat.CMD....是咩野来? 
int j=tf.getText().indexOf(":"); 
if(j>0) pw.println(Chat.CMD_MESG+tf.getText()); 
else 
pw.println(Chat.CMD_BCAST+tf.getText()); 
tf.setText("");//勿使用flush()? 
} 
} 
}); 
p.add(tf); 
cp.add(BorderLayout.SOUTH,p); 
cp.addWindowListener(new WindowAdapter(){ 
public void windowClosing(WindowEvent e){ 
//如果执行了setVisible或者dispose,关闭窗口 
ChatClient.this.cp.setVisible(false); 
ChatClient.this.cp.dispose(); 
logout(); 
} 
}); 
cp.pack();//勿明白有咩用? 
//将Frame cp放在中间 
Dimension us=cp.getSize(), 
them=Toolkit.getDefaultToolkit().getScreenSize(); 
int newX=(them.width-us.width)/2; 
int newY=(them.height-us.height)/2; 
cp.setLocation(newX,newY); 
cp.setVisible(true); 
paintMessage="Window should now be visible"; 
repaint(); 
} 
//登录聊天室 
public void login(){ 
if(loggedIn) return; 
try{ 
sock=new Socket(getCodeBase().getHost(),port); 
is=new BufferedReader(new InputStreamReader(sock.getInputStream())); 
pw=new PrintWriter(sock.getOutputStream(),true); 
}catch(IOException e){ 
showStatus("Can't get socket: "+e); 
cp.add(new Label("Can't get socket: "+e)); 
return;} 
//构造并且启动读入器,从服务器读取数据,输出到文本框中 
//这里,长成一个线程来避免锁住资源(lockups) 
new Thread (new Runnable(){ 
public void run(){ 
String line; 
try{ 
while(loggedIn &&((line=is.readLine())!=null)) 
ta.appendText(line+"/n"); 
}catch(IOException e){ 
showStatus("我的天啊,掉线了也!!!!"); 
return; 
} 
} 
}).start(); 
//假定登录(其实只是打印相关信息,并没有真正登录) 
// pw.println(Chat.CMD_LOGIN+"AppletUser"); 
pw.println(Chat.CMD_LOGIN+"AppletUser"); 
loggedIn =true; } 
//模仿退出的代码 
public void logout(){ 
if(!loggedIn) 
return; 
loggedIn=false; 
try{ 
if(sock!=null) 
sock.close(); 
}catch(IOException ign){ 
// 异常处理哦 
} 
} 
//没有设置stop的方法,即使从浏览器跳到另外一个网页的时候 
//聊天程序还可以继续运行 
public void paint(Graphics g){ 
Dimension d=getSize(); 
int h=d.height; 
int w=d.width; 
g.fillRect(0,0,w,2); 
g.setColor(Color.black); 
g.drawString(paintMessage,10,(h/2)-5); 
} 
}  
聊天室服务器端 
import java.net.*; 
import java.io.*; 
import java.util.*; public class ChatServer{ 
//聊天室管理员ID 
protected final static String CHATMASTER_ID="ChatMaster"; 
//系统信息的分隔符 
protected final static String SEP=": "; 
//服务器的Socket 
protected ServerSocket servSock; 
//当前客户端列表 
protected ArrayList clients; 
//调试标记 
protected boolean DEBUG=false; 
public ChatParameter Chat; //主方法构造一个ChatServer,没有返回值 
public static void main(String[] argv){ 
System.out.println("Chat server0.1 starting>>>>>>>>>>>>>>>>"); 
ChatServer w=new ChatServer(); 
w.runServer(); 
System.out.println("***ERROR*** Chat server0.1 quitting"); } 
//构造和运行一个聊天服务 
ChatServer(){ 
Chat=new ChatParameter(); 
clients=new ArrayList(); 
try{ 
servSock=new ServerSocket(7777);//实有问题拉,不过可能是他自己定义既一个class. 
System.out.println("Chat Server0.1 listening on port:"+7777); 
}catch(Exception e){ 
log("IO Exception in ChatServer.<init>"); 
System.exit(0); 
} 
} public void runServer(){ 
try{ 
while(true){ 
Socket us=servSock.accept(); 
String hostName=us.getInetAddress().getHostName(); 
System.out.println("Accpeted from "+hostName); 
//一个处理的线程 
ChatHandler cl=new ChatHandler(us,hostName); 
synchronized(clients){ 
clients.add(cl); 
cl.start(); 
if(clients.size()==1) 
cl.send(CHATMASTER_ID,"Welcome!You are the first one here"); 
else{ 
cl.send(CHATMASTER_ID,"Welcome!You are the latest of"+ 
clients.size()+" users."); 
} 
} 
} 
}catch(Exception e){ 
log("IO Exception in runServer:"+e); 
System.exit(0); 
} 
} protected void log(String s){ 
System.out.println(s); 
} //处理会话的内部的类 
protected class ChatHandler extends Thread { 
//客户端scoket 
protected Socket clientSock; 
//读取socket的BufferedReader 
protected BufferedReader is ; 
//在socket 上发送信息行的PrintWriter 
protected PrintWriter pw; 
//客户端出主机 
protected String clientIP; 
//句柄 
protected String login; public ChatHandler (Socket sock,String clnt)throws IOException { 
clientSock=sock; 
clientIP=clnt; 
is=new BufferedReader( 
new InputStreamReader(sock.getInputStream())); 
pw=new PrintWriter (sock.getOutputStream(),true); } 
//每一个ChatHandler是一个线程,下面的是他的run()方法 
//用于处理会话 
public void run(){ 
String line; try{ 
while((line=is.readLine())!=null){ 
char c=line.charAt(0);// ,果只Chat.CMD咩xx冇定义 扑啊///!!! 
line=line.substring(1); 
switch(c){ 
//case Chat.CMD_LOGIN: 
case 'l': 
if(!Chat.isValidLoginName(line)){ 
send(CHATMASTER_ID,"LOGIN"+line+"invalid"); 
log("LOGIN INVALID from:"+clientIP); 
continue; 
} login=line; 
broadcast(CHATMASTER_ID,login+" joins us,for a total of"+ 
clients.size()+" users"); 
break; // case Chat.CMD_MESG: 
case 'm': 
if(login==null){ 
send(CHATMASTER_ID,"please login first"); 
continue; 
} int where =line.indexOf(Chat.SEPARATOR); 
String recip=line.substring(0,where); 
String mesg=line.substring (where+1); 
log("MESG: "+login+"--->"+recip+": "+mesg); 
ChatHandler cl=lookup(recip); 
if(cl==null) 
psend(CHATMASTER_ID,recip+"not logged in."); 
else 
cl.psend(login,mesg); break; 
//case Chat.CMD_QUIT: 
case 'q': 
broadcast(CHATMASTER_ID,"Goodbye to "+login+"@"+clientIP); 
close(); 
return;//ChatHandler结束 // case Chat.CMD_BCAST: 
case 'b': 
if(login!=null) 
broadcast(login,line); 
else 
log("B<L FROM"+clientIP); 
break; default: 
log("Unknow cmd"+c+"from"+login+"@"+clientIP); 
} 
} 
}catch(IOException e){ 
log("IO Exception :"+e); 
}finally{ 
//sock 结束,我们完成了 
//还不能发送再见的消息 
//得有简单的基于命令的协议才行 
System.out.println(login+SEP+"All Done"); 
synchronized(clients){ 
clients.remove(this); 
if(clients.size()==0){ 
System.out.println(CHATMASTER_ID+SEP+ 
"I'm so lonely I could cry>>>>>"); 
}else if(clients.size()==1){ 
ChatHandler last=(ChatHandler)clients.get(0); 
last.send(CHATMASTER_ID,"Hey,you are talking to yourself again"); 
} 
else{ 
broadcast(CHATMASTER_ID,"There are now"+clients.size()+" users"); 
} 
} 
} 
} 
protected void close(){ 
if(clientSock==null){ 
log("close when not open"); 
return; 
} 
try{ 
clientSock.close(); 
clientSock=null; 
}catch(IOException e){ 
log("Failure during close to "+clientIP); 
} 
} 
//发送一条消息给用户 
public void send(String sender,String mesg){ 
pw.println(sender+SEP+"*>"+mesg); 
} 
//发送私有的消息 
protected void psend(String sender ,String msg){ 
send("<*"+sender+"*>",msg); 
} 
//发送一条消息给所有的用户 
public void broadcast (String sender,String mesg){ 
System.out.println("Broadcasting"+sender+SEP+mesg); 
for(int i=0;i<clients.size();i++){ 
ChatHandler sib=(ChatHandler)clients.get(i); 
if(DEBUG) 
System.out.println("Sending to"+sib); 
sib.send(sender,mesg); 
} 
if(DEBUG) System.out.println("Done broadcast"); 
} 
protected ChatHandler lookup(String nick){ 
synchronized(clients){ 
for(int i=0;i<clients.size();i++){ 
ChatHandler cl=(ChatHandler)clients.get(i); 
if(cl.login.equals(nick)) 
return cl; 
} 
} 
return null; 
} 
//将ChatHandler对象转换成一个字符串 
public String toString(){ 
return "ChatHandler["+login+"]"; 
} 
} 
}  
public class ChatParameter { 
public static final char CMD_BCAST='b'; 
public static final char CMD_LOGIN='l'; 
public static final char CMD_MESG='m'; 
public static final char CMD_QUIT='q'; 
public static final char SEPARATOR=':';//????? 
public static final int PORTNUM=7777; 
public boolean isValidLoginName(String line){ 
if (line.equals("CHATMASTER_ID")) 
return false; 
return true; 
} 
public void main(String[] argv){ 
} 
}
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
import java.awt.*; 
import java.net.*; 
import java.awt.event.*; 
import java.io.*; 
import java.util.Hashtable; public class ChatArea extends Panel implements ActionListener,Runnable 
{ 
Socket socket=null; 
DataInputStream in=null; 
DataOutputStream out=null; 
Thread threadMessage=null; 
TextArea 谈话显示区,私聊显示区=null; 
TextField 送出信息=null; 
Button 确定,刷新谈话区,刷新私聊区; 
Label 提示条=null; 
String name=null; 
Hashtable listTable; 
List listComponent=null; 
Choice privateChatList; 
int width,height; 
public ChatArea(String name,Hashtable listTable,int width,int height) 
{ 
setLayout(null); 
setBackground(Color.orange); 
this.width=width; 
this.height=height; 
setSize(width,height); 
this.listTable=listTable; 
this.name=name; 
threadMessage=new Thread(this); 
谈话显示区=new TextArea(10,10); 
私聊显示区=new TextArea(10,10); 
确定=new Button("送出信息到:"); 
刷新谈话区=new Button("刷新谈话区"); 
刷新私聊区=new Button("刷新私聊区"); 
提示条=new Label("双击聊天者可私聊",Label.CENTER); 
送出信息=new TextField(28); 
确定.addActionListener(this); 
送出信息.addActionListener(this); 
刷新谈话区.addActionListener(this); 
刷新私聊区.addActionListener(this); 
listComponent=new List(); 
listComponent.addActionListener(this); 
privateChatList=new Choice(); 
privateChatList.add("大家(*)"); 
privateChatList.select(0); add(谈话显示区); 
谈话显示区.setBounds(10,10,(width-120)/2,(height-120)); 
add(私聊显示区); 
私聊显示区.setBounds(10+(width-120)/2,10,(width-120)/2,(height-120)); 
add(listComponent); 
listComponent.setBounds(10+(width-120),10,100,(height-160)); 
add(提示条); 
提示条.setBounds(10+(width-120),10+(height-160),110,40); 
Panel pSouth=new Panel(); 
pSouth.add(送出信息); 
pSouth.add(确定); 
pSouth.add(privateChatList); 
pSouth.add(刷新谈话区); 
pSouth.add(刷新私聊区); 
add(pSouth); 
pSouth.setBounds(10,20+(height-120),width-20,60); } 
public void setName(String s) 
{ 
name=s; 
} 
public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out) 
{ 
this.socket=socket; 
this.in=in; 
this.out=out; 
try 
{ 
threadMessage.start(); 
} 
catch(Exception e) 
{ 
} 
} 
public void actionPerformed(ActionEvent e) 
{ if(e.getSource()==确定||e.getSource()==送出信息) 
{ 
String message=""; 
String people=privateChatList.getSelectedItem(); 
people=people.substring(0,people.indexOf("(")); 
message=送出信息.getText(); 
if(message.length()>0) 
{ 
try { 
if(people.equals("大家")) 
{ 
out.writeUTF("公共聊天内容:"+name+"说:"+message); 
} 
else 
{ 
out.writeUTF("私人聊天内容:"+name+"悄悄地说:"+message+"#"+people); 
} 
} 
catch(IOException event) 
{ 
} 
} 
} 
else if(e.getSource()==listComponent) 
{ 
privateChatList.insert(listComponent.getSelectedItem(),0); 
privateChatList.repaint(); 
} 
else if(e.getSource()==刷新谈话区) 
{ 
谈话显示区.setText(null); 
} 
else if(e.getSource()==刷新私聊区) 
{ 
私聊显示区.setText(null); 
} 
} 
public void run() 
{ 
while(true) 
{ 
String s=null; 
try 
{ 
s=in.readUTF(); 
if(s.startsWith("聊天内容:")) 
{ 
String content=s.substring(s.indexOf(":")+1); 
谈话显示区.append("/n"+content); 
} 
if(s.startsWith("私人聊天内容:")) 
{ 
String content=s.substring(s.indexOf(":")+1); 
私聊显示区.append("/n"+content); 
} 
else if(s.startsWith("聊天者:")) 
{ 
String people=s.substring(s.indexOf(":")+1,s.indexOf("性别")); 
String sex=s.substring(s.indexOf("性别")+2); listTable.put(people,people+"("+sex+")"); 
listComponent.add((String)listTable.get(people)); 
listComponent.repaint(); 
} 
else if(s.startsWith("用户离线:")) 
{ 
String awayPeopleName=s.substring(s.indexOf(":")+1); 
listComponent.remove((String)listTable.get(awayPeopleName)); 
listComponent.repaint(); 
谈话显示区.append("/n"+(String)listTable.get(awayPeopleName)+"离线"); 
listTable.remove(awayPeopleName); 
} 
Thread.sleep(5); 
} 
catch(IOException e) 
{ 
listComponent.removeAll(); 
listComponent.repaint(); 
listTable.clear(); 
谈话显示区.setText("和服务器的连接已中断/n必须刷新浏览器才能再次聊天"); 
break; 
} 
catch(InterruptedException e) 
{ 
} 
} 
} 
} ChatServer.java 
import java.io.*; 
import java.net.*; 
import java.util.*; 
public class ChatServer 
{ 
public static void main(String args[]) 
{ 
ServerSocket server=null; 
Socket you=null; 
Hashtable peopleList; 
peopleList=new Hashtable(); 
while(true) 
{ 
try 
{ 
server=new ServerSocket(6666); 
} 
catch(IOException e1) 
{ 
System.out.println("正在监听"); 
} 
try { 
you=server.accept(); 
InetAddress address=you.getInetAddress(); 
System.out.println("用户的IP:"+address); } 
catch (IOException e) 
{ 
} 
if(you!=null) 
{ 
Server_thread peopleThread=new Server_thread(you,peopleList); 
peopleThread.start(); 
} 
else { 
continue; 
} 
} 
} 
} 
class Server_thread extends Thread 
{ 
String name=null,sex=null; 
Socket socket=null; 
File file=null; 
DataOutputStream out=null; 
DataInputStream in=null; 
Hashtable peopleList=null; 
Server_thread(Socket t,Hashtable list) 
{ 
peopleList=list; 
socket=t; 
try { 
in=new DataInputStream(socket.getInputStream()); 
out=new DataOutputStream(socket.getOutputStream()); 
} 
catch (IOException e) 
{ 
} 
} 
public void run() 
{ while(true) 
{ String s=null; 
try 
{ 
s=in.readUTF(); 
if(s.startsWith("姓名:")) 
{ 
name=s.substring(s.indexOf(":")+1,s.indexOf("性别")); 
sex=s.substring(s.lastIndexOf(":")+1); boolean boo=peopleList.containsKey(name); 
if(boo==false) 
{ 
peopleList.put(name,this); 
out.writeUTF("可以聊天:"); 
Enumeration enum=peopleList.elements(); 
while(enum.hasMoreElements()) 
{ 
Server_thread th=(Server_thread)enum.nextElement(); 
th.out.writeUTF("聊天者:"+name+"性别"+sex); if(th!=this) 
{ 
out.writeUTF("聊天者:"+th.name+"性别"+th.sex); 
} 
} } 
else 
{ 
out.writeUTF("不可以聊天:"); 
} 
} 
else if(s.startsWith("公共聊天内容:")) 
{ 
String message=s.substring(s.indexOf(":")+1); 
Enumeration enum=peopleList.elements(); 
while(enum.hasMoreElements()) 
{ 
((Server_thread)enum.nextElement()).out.writeUTF("聊天内容:"+message); 
} 
} else if(s.startsWith("用户离开:")) 
{ 
Enumeration enum=peopleList.elements(); 
while(enum.hasMoreElements()) 
{ try 
{ 
Server_thread th=(Server_thread)enum.nextElement(); 
if(th!=this&&th.isAlive()) 
{ 
th.out.writeUTF("用户离线:"+name); 
} 
} 
catch(IOException eee) 
{ 
} 
} 
peopleList.remove(name); 
socket.close(); 
System.out.println(name+"用户离开了"); 
break; 
} 
else if(s.startsWith("私人聊天内容:")) 
{ 
String 悄悄话=s.substring(s.indexOf(":")+1,s.indexOf("#")); 
String toPeople=s.substring(s.indexOf("#")+1); Server_thread toThread=(Server_thread)peopleList.get(toPeople); 
if(toThread!=null) 
{ 
toThread.out.writeUTF("私人聊天内容:"+悄悄话); 
} 
else 
{ 
out.writeUTF("私人聊天内容:"+toPeople+"已经离线"); 
} 
} 
} 
catch(IOException ee) 
{ 
Enumeration enum=peopleList.elements(); 
while(enum.hasMoreElements()) 
{ try 
{ 
Server_thread th=(Server_thread)enum.nextElement(); 
if(th!=this&&th.isAlive()) 
{ 
th.out.writeUTF("用户离线:"+name); 
} 
} 
catch(IOException eee) 
{ 
} 
} 
peopleList.remove(name); 
try 
{ 
socket.close(); 
} 
catch(IOException eee) 
{ 
} System.out.println(name+"用户离开了"); 
break; 
} 
} 
} 
} import java.awt.*; 
import java.io.*; 
import java.net.*; 
import java.applet.*; 
import java.util.Hashtable; ClientChat.java 
public class ClientChat extends Applet implements Runnable 
{ 
Socket socket=null; 
DataInputStream in=null; 
DataOutputStream out=null; 
InputNameTextField 用户提交昵称界面=null; 
ChatArea 用户聊天界面=null; 
Hashtable listTable; 
Label 提示条; 
Panel north, center; 
Thread thread; 
public void init() 
{ 
int width=getSize().width; 
int height=getSize().height; 
listTable=new Hashtable(); 
setLayout(new BorderLayout()); 
用户提交昵称界面=new InputNameTextField(listTable); 
int h=用户提交昵称界面.getSize().height; 
用户聊天界面=new ChatArea("",listTable,width,height-(h+5)); 
用户聊天界面.setVisible(false); 
提示条=new Label("正在连接到服务器,请稍等...",Label.CENTER); 
提示条.setForeground(Color.red); 
north=new Panel(new FlowLayout(FlowLayout.LEFT)); 
center=new Panel(); 
north.add(用户提交昵称界面); 
north.add(提示条); 
center.add(用户聊天界面); 
add(north,BorderLayout.NORTH); 
add(center,BorderLayout.CENTER); 
validate(); 
} 
public void start() 
{ 
if(socket!=null&&in!=null&&out!=null) 
{ try 
{ 
socket.close(); 
in.close(); 
out.close(); 
用户聊天界面.setVisible(false); } 
catch(Exception ee) 
{ 
} 
} 
try 
{ 
socket = new Socket(this.getCodeBase().getHost(), 6666); 
in=new DataInputStream(socket.getInputStream()); 
out=new DataOutputStream(socket.getOutputStream()); 
} 
catch (IOException ee) 
{ 
提示条.setText("连接失败"); 
} 
if(socket!=null) 
{ 
InetAddress address=socket.getInetAddress(); 
提示条.setText("连接:"+address+"成功"); 
用户提交昵称界面.setSocketConnection(socket,in,out); 
north.validate(); 
} 
if(thread==null) 
{ 
thread=new Thread(this); 
thread.start(); 
} 
} public void stop() 
{ 
try 
{ 
socket.close(); 
thread=null; 
} 
catch(IOException e) 
{ 
this.showStatus(e.toString()); 
} 
} 
public void run() 
{ 
while(thread!=null) 
{ 
if(用户提交昵称界面.get能否聊天()==true) 
{ 
用户聊天界面.setVisible(true); 
用户聊天界面.setName(用户提交昵称界面.getName()); 
用户聊天界面.setSocketConnection(socket,in,out); 
提示条.setText("祝聊天愉快!"); 
center.validate(); 
break; 
} 
try 
{ 
Thread.sleep(100); 
} 
catch(Exception e) 
{ 
} 
} 
} 
}  
InputNameTextField。java 
import java.awt.*; 
import java.net.*; 
import java.awt.event.*; 
import java.io.*; 
import java.util.Hashtable; 
public class InputNameTextField extends Panel implements ActionListener,Runnable 
{ 
TextField nameFile=null; 
String name=null; 
Checkbox male=null,female=null; 
CheckboxGroup group=null; 
Button 进入聊天室=null,退出聊天室=null; 
Socket socket=null; 
DataInputStream in=null; 
DataOutputStream out=null; 
Thread thread=null; 
boolean 能否聊天=false; 
Hashtable listTable; 
public InputNameTextField(Hashtable listTable) 
{ 
this.listTable=listTable; 
nameFile=new TextField(10); 
group=new CheckboxGroup(); 
male=new Checkbox("男",true,group); 
female=new Checkbox("女",false,group); 
进入聊天室=new Button("进入"); 
退出聊天室=new Button("退出"); 
进入聊天室.addActionListener(this); 
退出聊天室.addActionListener(this); 
thread=new Thread(this); 
add(new Label("昵称:")); 
add(nameFile); 
add(male); 
add(female); 
add(进入聊天室); 
add(退出聊天室); 
退出聊天室.setEnabled(false); 
} 
public void set能否聊天(boolean b) 
{ 
能否聊天=b; 
} 
public boolean get能否聊天() 
{ 
return 能否聊天; 
} 
public String getName() 
{ 
return name; 
} 
public void setName(String s) 
{ 
name=s; 
} 
public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out) 
{ this.socket=socket; 
this.in=in; 
this.out=out; 
try{ 
thread.start(); 
} 
catch(Exception e) 
{ 
nameFile.setText(""+e); 
} 
} 
public Socket getSocket() 
{ 
return socket; 
} 
public void actionPerformed(ActionEvent e) 
{ 
if(e.getSource()==进入聊天室) 
{ 
退出聊天室.setEnabled(true); 
if(能否聊天==true) 
{ 
nameFile.setText("您正在聊天:"+name); 
} 
else 
{ 
this.setName(nameFile.getText()); 
String sex=group.getSelectedCheckbox().getLabel(); 
if(socket!=null&&name!=null) 
{ 
try{ 
out.writeUTF("姓名:"+name+"性别:"+sex); 
} 
catch(IOException ee) 
{ 
nameFile.setText("没有连通服务器"+ee); 
} 
} 
} 
} 
if(e.getSource()==退出聊天室) 
{ 
try 
{ 
out.writeUTF("用户离开:"); 
} 
catch(IOException ee) 
{ 
} 
} 
} 
public void run() 
{ 
String message=null; 
while(true) 
{ 
if(in!=null) 
{ 
try 
{ 
message=in.readUTF(); 
} 
catch(IOException e) 
{ 
nameFile.setText("和服务器断开"+e); 
} 
} 
if(message.startsWith("可以聊天:")) 
{ 
能否聊天=true; 
break; 
} 
else if(message.startsWith("聊天者:")) 
{ 
String people=message.substring(message.indexOf(":")+1); 
listTable.put(people,people); 
} 
else if(message.startsWith("不可以聊天:")) 
{ 
能否聊天=false; 
nameFile.setText("该昵称已被占用"); 
} 
} 
} 
}
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; import java.io.*; 
import java.net.*; 
public class liaotian extends JFrame implements ActionListener{ 
public static void main(String[] args){ 
liaotian frame=new liaotian(); 
} 
JButton command,command2,command3; 
JRadioButton rb[]=new JRadioButton[2]; 
JTextArea ta1; 
JTextField tf1,tf2,tf3; 
ServerSocket socket1; 
Socket insocket1,socket2; 
String inbuf; 
BufferedReader in1; 
PrintWriter out1; 
mt625_server t1; 
mt625_client t2; 
public liaotian(){ 
super("聊天"); 
Container c=getContentPane(); 
c.setLayout(null); 
JLabel lb=new JLabel("TCP通信程序"); 
lb.setFont(new Font("宋体",Font.BOLD,16)); 
lb.setForeground(Color.black); 
lb.setSize(2000,20); 
lb.setLocation(10,2); 
c.add(lb); 
String str1[]={"服务端","客户端"}; 
ButtonGroup bg1=new ButtonGroup(); 
for(int i=0;i<2;i++){ 
rb[i]=new JRadioButton(str1[i]); 
rb[i].setFont(new Font("宋体",Font.BOLD,14)); 
rb[i].setForeground(Color.black); 
rb[i].setSize(80,20); 
rb[i].setLocation(10+i*80,27); 
c.add(rb[i]); 
bg1.add(rb[i]); 
} 
rb[0].setSelected(true); 
JLabel lb1=new JLabel("连接主机IP"); 
lb1.setFont(new Font("宋体",Font.BOLD,16)); 
lb1.setForeground(Color.black); 
lb1.setSize(120,25); 
lb1.setLocation(16,55); 
c.add(lb1); 
tf1=new JTextField("59.68.255.27"); 
tf1.setForeground(Color.black); 
tf1.setSize(250,25); 
tf1.setLocation(120,55); 
c.add(tf1); 
command=new JButton("连接"); 
command.setFont(new Font("宋体",Font.BOLD,16)); 
command.setSize(110,20); 
command.setLocation(380,55); 
command.addActionListener(this); 
c.add(command); 
JLabel lb2=new JLabel("接收到信息"); 
lb2.setFont(new Font("宋体",Font.BOLD,16)); 
lb2.setForeground(Color.black); 
lb2.setSize(120,20); 
lb2.setLocation(10,85); 
c.add(lb2); 
ta1=new JTextArea(); 
ta1.setForeground(Color.black); 
ta1.setSize(250,200); 
ta1.setLocation(120,85); 
c.add(ta1); 
JLabel lb3=new JLabel("发送信息"); 
lb3.setFont(new Font("宋体",Font.BOLD,16)); 
lb3.setForeground(Color.black); 
lb3.setSize(120,25); 
lb3.setLocation(10,300); 
c.add(lb3); 
tf2=new JTextField(); 
tf2.setForeground(Color.black); 
tf2.setSize(250,25); 
tf2.setLocation(120,300); 
c.add(tf2); 
command2=new JButton("发送信息"); 
command2.setFont(new Font("宋体",Font.BOLD,16)); 
command2.setSize(110,25); 
command2.setLocation(380,300); 
command2.addActionListener(this); 
command2.setEnabled(false); 
c.add(command2); 
JLabel lb4=new JLabel("连接状态: "); 
lb4.setFont(new Font("宋体",Font.BOLD,14)); 
lb4.setForeground(Color.black); 
lb4.setSize(120,25); 
lb4.setLocation(180,27); 
c.add(lb4); 
tf3=new JTextField("离线"); 
tf3.setForeground(Color.black); 
tf3.setSize(120,25); 
tf3.setLocation(270,27); 
c.add(tf3); 
command3=new JButton("结束连接"); 
command3.setFont(new Font("宋体",Font.BOLD,16)); 
command3.setSize(110,20); 
command3.setLocation(380,85); 
command3.addActionListener(this); 
command3.setEnabled(false); 
c.add(command3); 
t1=new mt625_server(); 
t2=new mt625_client(); 
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
setSize(500,400); 
setVisible(true); 
setLocation(300,300); } 
public void actionPerformed(ActionEvent e) 
{ 
if(e.getSource()==command){ 
try{ 
if(rb[0].isSelected()==true){ 
inbuf=""; 
tf2.setText(""); 
t1.start(); 
} 
else{ 
inbuf=""; 
tf2.setText(""); 
t2.start(); 
} 
} 
catch (Exception e2) {tf3.setText("发生错误");} 
} 
if(e.getSource()==command2){ 
out1.write(tf2.getText()+"/n"); 
out1.flush(); 
tf2.setText(""); 
} 
if(e.getSource()==command3){ 
try{ 
if(rb[0].isSelected()==true){ 
insocket1.close(); 
tf3.setText("离线"); 
command2.setEnabled(false); 
command3.setEnabled(false); 
} 
else{ 
socket2.close(); 
tf3.setText("离线!"); 
command2.setEnabled(false); 
command3.setEnabled(false); 
} 
}catch (Exception e2) {tf3.setText("发生错误");} 
} 
} 
class mt625_server extends Thread{ 
public mt625_server(){} 
public void run(){ 
try{ 
command.setEnabled(false); 
tf3.setText("正在等待连接!"); 
tf1.setText(Inet4Address.getLocalHost().getHostAddress()); 
socket1=new ServerSocket(21); 
insocket1=socket1.accept(); 
in1=new BufferedReader(new InputStreamReader(insocket1.getInputStream())); 
out1=new PrintWriter(insocket1.getOutputStream(),true); while(true){ 
if(socket1.isBound()==true){ 
tf3.setText("正在连接!"); 
command2.setEnabled(true); 
command3.setEnabled(true); 
break; 
} 
} 
while(true){ 
inbuf=in1.readLine(); 
if(inbuf.length()>0) 
{ 
ta1.append(inbuf); 
ta1.append("/n"); 
} 
} 
} 
catch(Exception e){} 
} 
} 
class mt625_client extends Thread{ 
public mt625_client(){} 
public void run(){ 
try{ 
command.setEnabled(false); 
tf3.setText("正在等待连接!"); 
socket2=new Socket(); 
socket2.connect(new InetSocketAddress(tf1.getText(),21),5000); 
in1=new BufferedReader(new InputStreamReader(socket2.getInputStream())); 
out1=new PrintWriter(socket2.getOutputStream(),true); 
while(true){ 
if(socket2.isConnected()==true){ 
tf3.setText("正在连接!"); 
command2.setEnabled(true); 
command3.setEnabled(true); 
break; 
} 
} 
inbuf=""; 
while(true){ 
inbuf=in1.readLine(); 
if(inbuf.length()>0) 
{ 
ta1.append(inbuf); 
ta1.append("/n"); 
} 
} 
} 
catch(Exception e){} 
} 
} }
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