如何在Vue表单中处理图片

router.post("/add-story", upload.single('photo'), async(req, res) => {
 try{
  let post = new Post();
  post.title = req.body.title;
  post.description = req.body.description;
  post.photo = req.file.location;
  post.body = req.body.body;
  post.snippet = req.body.snippet;

  await post.save();

  res.json({
   status: true,
   message: "Successfully saved."
  });

 } catch(err) {
  res.status(500).json({
   success: false,
   message: err.message
  });
 }
});

// vue组件的其他部分
data () {
  return {
    title: '',
    body: '',
    description: '',
    snippet: '',
    photo: {} // 储存文件数据
  };
},
methods: {
  updatePhoto (files) {
    if (!files.length) return;

    // 存储文件数据
    this.photo = {
      name: files[0].name,
      data: files[0]
    };
  },
  createPost() {
    let formData = new FormData();

    formData.append('title', this.title);
    formData.append('body', this.body);
    formData.append('description', this.description);
    formData.append('snippet', this.snippet);
    formData.append('photo', this.photo.data, this.photo.name);

    PostService.createPost(formdata)
    .then(() => {
      console.log('success');
    });
  }
}
// vue组件的其他部分