[java]代码库import java.io.*;
import .*;
import java.util.*;
public class ChatServer {
boolean started = false;
ServerSocket ss = null;
List clients = new ArrayList();
public static void main(String[] args) {
System.out.println("aa\n");
new ChatServer().start();
}
//程序运行就执行下面的程序段
public void start() {
try {
started = true;
ss = new ServerSocket(8888);//开发一个8888端口的Socket通道
System.out.println("aa\n");
} catch (BindException e) {//出现连接错误的时候关闭到，说明已有相同的服务在运行
System.out.println("端口使用中....");
System.out.println("请关掉相关程序并重新运行服务器！");
System.exit(0);
} catch (IOException e) {
e.printStackTrace();
}
try {
//当你开启后会在这个程序内循环
while(started) {
Socket s = ss.accept();//等待用户的连接
Client c = new Client(s);//当有用户连接的时候创建一个Client客户
System.out.println("a client connected!");
new Thread(c).start();
clients.add(c);
//dis.close();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
ss.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//这个类主要是用于接收和用户的短信信息
class Client implements Runnable {
private Socket s;
private DataInputStream dis = null;
private DataOutputStream dos = null;
private boolean bConnected = false;
public Client(Socket s) {
this.s = s;
try {
dis = new DataInputStream(s.getInputStream());
dos = new DataOutputStream(s.getOutputStream());
bConnected = true;
} catch (IOException e) {
e.printStackTrace();
}
}
public void send(String str) {
try {
dos.writeUTF(str);
} catch (IOException e) {
e.printStackTrace();
}
}
public void run() {
try {
while(bConnected) {
String str = dis.readUTF();
System.out.println(str);
for(int i = 0; i < clients.size(); i++) {
Client c = clients.get(i);
c.send(str);
//System.out.println(" a string send !");
}
/*
for(Iterator it = clients.iterator(); it.hasNext(); ) {
Client c = it.next();
c.send(str);
}
*/
/*
Iterator it = clients.iterator();
while(it.hasNext()) {
Client c = it.next();
c.send(str);
}
*/
}
} catch (EOFException e) {
System.out.println("Client closed!");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(dis != null) dis.close();
if(dos != null) dos.close();
if(s != null) {
s.close();
//s = null;
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}
下面的是客户端的源代码
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import .*;
public class ChatClient extends Frame {
Socket s = null;
DataOutputStream dos = null;
DataInputStream dis = null;
private boolean bConnected = false;
TextField tfTxt = new TextField();
TextArea taContent = new TextArea();
Thread tRecv = new Thread(new RecvThread());
public static void main(String[] args) {
new ChatClient().launchFrame();
}
public void launchFrame() {
setLocation(400, 300);
this.setSize(300, 300);
add(tfTxt, BorderLayout.SOUTH);
add(taContent, BorderLayout.NORTH);
pack();
setVisible(true);
connect();
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
disconnect();
System.exit(0);
}
});
tfTxt.addActionListener(new TFListener());
new Thread(new RecvThread()).start();
}
public void connect() {
try {
s = new Socket("127.0.0.1", 8888);
dos = new DataOutputStream(s.getOutputStream());
dis = new DataInputStream(s.getInputStream());
bConnected = true;
} catch(UnknownHostException e) {
e.printStackTrace();
} catch(IOException e) {
e.printStackTrace();
}
}
public void disconnect() {
try {
bConnected = false;
tRecv.join();
} catch(InterruptedException e2) {
e2.printStackTrace();
}
finally {
try {
dos.close();
s.close();
dis.close();
} catch(IOException e) {
e.printStackTrace();
}
;
}
}
private class TFListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String str = tfTxt.getText().trim();
//taContent.setText(str);
tfTxt.setText("");
try {
dos.writeUTF(str);
dos.flush();
} catch(IOException e1) {
e1.printStackTrace();
}
}
}
private class RecvThread implements Runnable {
public void run() {
try {
while(bConnected) {
String str = dis.readUTF();
//System.out.println(str);
taContent.setText(taContent.getText() + str + '\n');
}
} catch (SocketException e) {
System.out.println("退出了，bye!");
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
