测量在express服务器中传输文件所用的时间

const express = require('express');
const multer = require('multer');
const fs = require('fs');

const app = express();
const upload = multer({ dest: 'uploads/' });

app.post('/upload', upload.single('file'), (req, res) => {
  const startTime = Date.now();

  // 将接收到的文件保存到服务器指定位置
  fs.renameSync(req.file.path, `uploads/${req.file.originalname}`);

  const endTime = Date.now();
  const transferTime = endTime - startTime;

  res.send(`文件传输时间：${transferTime}ms`);
});

app.listen(3000, () => {
  console.log('服务器已启动，监听端口3000');
});