在不上传的情况下检索文件数据(Express、Multer)

npm install express

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

const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, 'uploads/'); // 文件上传的目标目录
  },
  filename: function (req, file, cb) {
    cb(null, file.originalname); // 保留原始文件名
  }
});

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

app.post('/retrieve-file', upload.single('file'), (req, res) => {
  // 在这里可以访问解析后的文件数据
  const file = req.file;
  // 进行文件数据的处理逻辑
  // ...

  // 返回响应
  res.send('File retrieved successfully');
});

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