如何设置NodeJS/VueJS上传文件到其他服务器？

// 后端代码
const express = require('express');
const multer = require('multer');

const app = express();

// 配置multer中间件
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    // 指定文件保存的目录
    cb(null, 'uploads/');
  },
  filename: function (req, file, cb) {
    // 指定文件保存的文件名
    cb(null, file.originalname);
  }
});

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

// 处理文件上传请求
app.post('/upload', upload.single('file'), (req, res) => {
  // 上传完成后的操作，例如保存到云存储、传输到其他服务器等
  res.send('File uploaded successfully.');
});

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

// 前端代码
<template>
  <div>
    <input type="file" @change="handleFileUpload" />
    <button @click="uploadFile">Upload</button>
  </div>
</template>

<script>
import axios from 'axios';

export default {
  data() {
    return {
      file: null
    };
  },
  methods: {
    handleFileUpload(event) {
      this.file = event.target.files[0];
    },
    uploadFile() {
      const formData = new FormData();
      formData.append('file', this.file);

      axios.post('http://localhost:3000/upload', formData, {
        headers: {
          'Content-Type': 'multipart/form-data'
        }
      })
        .then(response => {
          console.log(response.data);
        })
        .catch(error => {
          console.log(error);
        });
    }
  }
}
</script>