给你一段聊天室代码，你看看
//服务端
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.net.BindException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Observable;
import java.util.Observer;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.ScrollPaneConstants;
public class ChatServer extends Observable implements Serializable {
JTextArea jtArea = new JTextArea();
JTextArea clientInfo = new JTextArea();
List<ConnectClient> clientList = new ArrayList<ConnectClient>();
public static void main(String[] args) {
new ChatServer().newServer();
}
public void addText(String s) {
// jtArea.append(s + "\n");
this.setChanged();
this.notifyObservers(s);
}
public void newServer() {
JFrame jf = new JFrame();
jf.setLayout(new GridLayout(1, 2));
jf.setTitle("简易聊天服务端1.0");
this.jtArea.setEditable(false);
this.clientInfo.setEditable(false);
JScrollPane jsp = new JScrollPane(jtArea);
jsp
.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
JScrollPane jspInfo = new JScrollPane(clientInfo);
jspInfo
.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
jf.add(jspInfo);
jf.add(jsp);
jf.setBounds(150, 100, 400, 500);
jf.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
jf.setVisible(true);
startSever();
}
public void startSever() {
ServerSocket server = null;
try {
server = new ServerSocket(8788);
jtArea.append("服务器启动成功....." + "\n");
new Thread(new updataClients()).start();
while (true) {
Socket s = server.accept();
ConnectClient cc = new ConnectClient(s);
clientList.add(cc);
addText(cc.getName() + ":" + new Date() + ":" + "连接到服务器");
jtArea.append(cc.getName() + ":" + s.getInetAddress() + ":"
+ s.getPort() + ":" + "连接到服务器" + ":" + new Date()
+ "\n");
this.addObserver(cc);
new Thread(cc).start();
}
} catch (BindException e) {
jtArea.append("端口被占用，请退出" + "\n");
} catch (IOException e) {
jtArea.append("服务器启动失败，请退出" + "\n");
e.printStackTrace();
}
}
class ConnectClient implements Runnable, Observer, Serializable {
private boolean beConneted = false;
private transient Socket s = null;
private transient DataInputStream dis = null;
private transient DataOutputStream dos = null;
private String name = null;
public String getName() {
return name;
}
public ConnectClient(Socket ss) {
this.s = ss;
this.name = name;
beConneted = true;
try {
dis = new DataInputStream(s.getInputStream());
dos = new DataOutputStream(s.getOutputStream());
name = dis.readUTF();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void sendMes(String s) {
try {
if (beConneted)
dos.writeUTF(s);
} catch (IOException e) {
}
}
@Override
public void run() {
try {
while (beConneted) {
String ss = dis.readUTF();
addText(name + ":" + ss + " " + new Date());
}
} catch (SocketException e) {
addText(name + ":" + "断开" + ":" + new Date());
jtArea.append(name + ":" + s.getInetAddress() + ":"
+ s.getPort() + ":" + "断开" + ":" + new Date() + "\n");
clientList.remove(this);
beConneted = false;
} catch (IOException e) {
} finally {
try {
if (dos != null)
dos.close();
if (dis != null)
dis.close();
if (s != null)
s.close();
beConneted = false;
clientList.remove(this);
deleteObserver(this);
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
@Override
public void update(Observable o, Object arg) {
String temp = (String) arg;
// System.out.println(temp);
this.sendMes(temp);
}
}
class updataClients implements Runnable {
@Override
public void run() {
while (true) {
updataInfo();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void updataInfo() {
ObjectOutputStream oos = null;
clientInfo.setText("");
String temp = null;
for (int i = 0; i < clientList.size(); i++) {
ConnectClient cc = clientList.get(i);
temp = cc.getName();
clientInfo.append(temp + "\n");
}
}
}
}
