使用无multer的node js上传文件

const http = require('http');
const fs = require('fs');
const formidable = require('formidable');

const server = http.createServer((req, res) => {
  if (req.url === '/upload' && req.method.toLowerCase() === 'post') {
    const form = new formidable.IncomingForm();
    form.parse(req, (err, fields, files) => {
      if (err) {
        res.statusCode = 500;
        res.end('Internal Server Error');
        return;
      }

      const file = files.file;
      const oldPath = file.path;
      const newPath = '/path/to/save/' + file.name;

      fs.rename(oldPath, newPath, (err) => {
        if (err) {
          res.statusCode = 500;
          res.end('Internal Server Error');
          return;
        }

        res.statusCode = 200;
        res.end('File uploaded successfully');
      });
    });
  } else {
    res.statusCode = 404;
    res.end('Not Found');
  }
});

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