通过socket.io动态更新Node.js拉斐尔路径

// 导入所需的模块
const express = require('express');
const app = express();
const server = require('http').Server(app);
const io = require('socket.io')(server);

// 定义路由
app.get('/', (req, res) => {
  res.sendFile(__dirname + '/index.html');
});

// 当有客户端连接时触发
io.on('connection', (socket) => {
  console.log('A client connected.');

  // 模拟从数据库中获取拉斐尔路径数据
  const raphaelPath = fetchRaphaelPathFromDatabase();

  // 发送拉斐尔路径给客户端
  socket.emit('raphaelPath', raphaelPath);

  // 当客户端发起更新请求时触发
  socket.on('updateRaphaelPath', () => {
    // 模拟更新拉斐尔路径数据
    const updatedRaphaelPath = updateRaphaelPathInDatabase();

    // 发送更新后的拉斐尔路径给客户端
    socket.emit('raphaelPath', updatedRaphaelPath);
  });

  // 当客户端断开连接时触发
  socket.on('disconnect', () => {
    console.log('A client disconnected.');
  });
});

// 启动服务器
server.listen(3000, () => {
  console.log('Server started on port 3000.');
});