使用socket io如何将消息分享给除发送者之外的所有Room用户

const http = require('http');
const socketIO = require('socket.io');

const server = http.createServer();
const io = socketIO(server);

io.on('connection', (socket) => {
  socket.on('joinRoom', (room) => {
    socket.join(room);
  });

  socket.on('sendMessage', (message) => {
    socket.to(message.room).broadcast.emit('receivedMessage', {
      sender: message.sender,
      content: message.content
    });
  });
});

server.listen(3000, () => {
  console.log('Server running on port 3000');
});

// 引入 Socket.IO 客户端库
import io from 'socket.io-client';

// 连接到 Socket.IO 服务器
const socket = io('http://localhost:3000');

// 当用户登录成功或进入特定页面时，加入房间
socket.emit('joinRoom', 'room1');

// 监听接收到的消息
socket.on('receivedMessage', (message) => {
  console.log(`Received message from ${message.sender}: ${message.content}`);
});

// 当用户发送消息时，向服务器发送消息内容和发送者信息
const message = {
  room: 'room1',
  sender: 'Alice',
  content: 'Hello World!'
};
socket.emit('sendMessage', message);