如何发送带有fastify & nestjs的文件？

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

const app = fastify();

app.register(multipart);

app.post('/upload', async (req, reply) => {
  const data = await req.file();
  const filename = data.filename;
  const savePath = '/path/to/save/' + filename;

  await data.toFile(savePath);

  reply.send('File uploaded successfully');
});

app.listen(3000, (err) => {
  if (err) {
    console.error(err);
    process.exit(1);
  }
  console.log('Server is running on port 3000');
});

import { Controller, Post, UploadedFile, UseInterceptors } from '@nestjs/common';
import { FileInterceptor } from '@nestjs/platform-express';
import { diskStorage } from 'multer';

@Controller('upload')
export class UploadController {
  @Post()
  @UseInterceptors(FileInterceptor('file', {
    storage: diskStorage({
      destination: '/path/to/save',
      filename: (req, file, cb) => {
        const filename = file.originalname;
        cb(null, filename);
      },
    }),
  }))
  uploadFile(@UploadedFile() file) {
    // Handle uploaded file
    return 'File uploaded successfully';
  }
}