java通信二：利用Socket实现聊天室功能
最近研究了下java socket通信基础，利用代码实现了一个简单的多人聊天室功能，现把代码共享下，希望能帮到有兴趣了解的人。
目录结构：
ChatClient:
package com.panda.chat;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
@SuppressWarnings("serial")
public class ChatClient extends Frame {
private TextArea ta = new TextArea();
private TextField tf = new TextField();
private DataOutputStream dos = null;
private DataInputStream dis = null;
private Socket socket = null;
private boolean bConnected = false;
private Thread thread=null;
public static void main(String[] args) {
new ChatClient().frameClient();
}
public void frameClient(){
setSize(400, 400);
setLocation(400,300);
add(ta,BorderLayout.NORTH);
add(tf,BorderLayout.SOUTH);
pack();
tf.addActionListener(new TfListener());
//关闭窗口事件监听
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
disconnected();
System.exit(0);
}
});
this.connect();
setVisible(true);
}
//链接服务器地址
private void connect(){
try {
socket = new Socket("127.0.0.1", 8888);
thread=new Thread(new ChatThread());
thread.start();
dos = new DataOutputStream(socket.getOutputStream());
dis = new DataInputStream(socket.getInputStream());
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//断开连接
private void disconnected(){
bConnected = false;
try {
dos.close();
dis.close();
socket.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
//键盘回车事件
private class TfListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
String strMsg = tf.getText();
tf.setText("");
try {
dos.writeUTF(strMsg);
dos.flush();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
//开启线程接受服务器信息
private class ChatThread implements Runnable{
@Override
public void run() {
try {
bConnected = true;
while(bConnected){
String msg = dis.readUTF();
String taText = ta.getText();
ta.setText(taText+msg+"\n");
}
} catch (SocketException e) {
System.out.println("退出");;
} catch (IOException e) {
e.printStackTrace();
}
}
}
}ChatServer:
package com.panda.chat;
import java.io.*;
import java.net.*;
import java.util.*;
public class ChatServer {
private boolean started = false;
private List<ChatThread> chatThreads = new ArrayList<ChatThread>();
public static void main(String[] args) {
new ChatServer().startServer();
}
private void startServer(){
try {
//开启服务端Socket
ServerSocket seso = new ServerSocket(8888);
started = true;
while(started){
//接受客户端连接请求
Socket sos = seso.accept();
System.out.println("一个客户端已连接");
//开启线程处理客户端通信
ChatThread ct = new ChatThread(sos);
chatThreads.add(ct);
new Thread(ct).start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
private class ChatThread implements Runnable{
private Socket socket;
private DataInputStream din=null;
private DataOutputStream don=null;
private boolean bConnected = false;
public ChatThread(Socket socket) {
super();
this.socket = socket;
}
//发送信息的函数
private void send(String strMsgIn){
try{
don.writeUTF(strMsgIn);
don.flush();
}catch(IOException e){
e.printStackTrace();
}
}
@Override
public void run() {
try{
din = new DataInputStream(socket.getInputStream());
don = new DataOutputStream(socket.getOutputStream());
//读取数据
bConnected = true;
while(bConnected){
String strMsgIn = din.readUTF();
System.out.println(strMsgIn);
//接收到数据后发送给每个客户端
for(int i =0;i<chatThreads.size();i++){
chatThreads.get(i).send(strMsgIn);
}
}
}catch (IOException e) {
try {
//如果客户端出错或关闭，直接关闭连接，并移除List中的当前线程
socket.close();
chatThreads.remove(this);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
} finally{
try {
din.close();
don.close();
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}运行ChatSever后，再同时打开多次ChatClient，就可以实现多人聊天了，你也试试。
