如何使用node接收包含多个部分的表单数据

const express = require('express');
const multer = require('multer');
const upload = multer({ dest: 'uploads/' }); // 设置上传文件的存储目录

const app = express();

// 处理单个文件上传
app.post('/upload', upload.single('file'), (req, res) => {
  res.send('File uploaded successfully.');
});

// 处理多个文件上传
app.post('/uploads', upload.array('files', 10), (req, res) => {
  // req.files 是一个包含所有上传文件的数组
  res.send('Files uploaded successfully.');
});

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

const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, 'uploads/');
  },
  filename: function (req, file, cb) {
    cb(null, Date.now() + '-' + file.originalname); // 使用时间戳避免文件名冲突
  }
});

const upload = multer({ storage: storage });

const fs = require('fs');
const dir = './uploads';

if (!fs.existsSync(dir)){
  fs.mkdirSync(dir);
}