如何从Fastify请求体中检索excel .xlsx数据？

const fastify = require('fastify');
const multipart = require('fastify-multipart');
const xlsx = require('xlsx');

const app = fastify();

app.register(multipart);

app.post('/upload', async (req, reply) => {
  const data = [];
  const parts = req.parts();

  for await (const part of parts) {
    if (part.file) {
      const workbook = xlsx.readFile(part.filename);
      const worksheet = workbook.Sheets[workbook.SheetNames[0]];
      const jsonData = xlsx.utils.sheet_to_json(worksheet, { header: 1 });
      data.push(jsonData);
    }
  }

  // 进一步处理Excel数据...
  // ...

  reply.send({ data });
});

app.listen(3000, (err) => {
  if (err) console.error(err);
  console.log('Server is listening on port 3000');
});