import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class ChatServer {
private static final int PORT = 1234; // 端口号
private static List list = new ArrayList(); // 保存连接对象
private ExecutorService exec; private ServerSocket server;
public static void main(String[] args) {
new ChatServer();
}
public ChatServer() {
try {
server = new ServerSocket(PORT);
exec = Executors.newCachedThreadPool();
System.out.println(“服务器已启动！”);
Socket client = null;
while (true) {
client = server.accept(); // 接收客户连接
list.add(client);
exec.execute(new ChatTask(client));
}
} catch (IOException e) { e.printStackTrace(); }
}
static class ChatTask implements Runnable {
private Socket socket;
private BufferedReader br;
private PrintWriter pw;
private String msg;
public ChatTask(Socket socket) throws IOException {
this.socket = socket;
br = new BufferedReader(new InputStreamReader(socket .getInputStream()));
msg = “【” + this.socket.getInetAddress() + “】进入聊天室！当前聊天室有【” + list.size() + “】人”;
sendMessage();
}
public void run() {
try {
while ((msg = br.readLine()) != null) {
if (msg.trim().equals(“bye”)) {
list.remove(socket);
br.close();
pw.close();
msg = “【” + socket.getInetAddress() + “】离开聊天室！当前聊天室有【” + list.size() + “】人”;
socket.close();
sendMessage();
break;
} else {
msg = “【” + socket.getInetAddress() + “】说：” + msg; sendMessage();
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
/** * 群发消息给聊天室的所有人 */
private void sendMessage() throws IOException {
System.out.println(msg);
for (Socket client : list) {
pw = new PrintWriter(client.getOutputStream(), true);
pw.println(msg);
}
}
}
}
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class ChatClient {
private static final int PORT = 7891;
private static ExecutorService exec = Executors.newCachedThreadPool();
public static void main(String[] args) throws Exception {
new ChatClient();
}
public ChatClient() {
try {
Socket socket = new Socket(“221.130.165.41″, PORT);
exec.execute(new Sender(socket));
System.out.println(“【” + socket.getInetAddress() + “】您好，欢迎来到简易聊天室！”);
BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String msg;
while ((msg = br.readLine()) != null) {
System.out.println(“收到—->”+msg);
}
} catch (Exception e) { }
}
}
