使用axios的Blob上传在Laravel中失败

Question

我一直在尝试使用axios上传文件，控制台网络选项卡上的有效负载看起来很棒但是Laravel端的文件似乎是空的。

以下是我从$request->all()

获得的回复

"feedback": {
"description": "there is not a friend",
"displays": [
 "Lagos -\r\n Ikoyi"
],
"messages": [
 {
   "text": "this is an unexpected result",
   "startTime": "2018-02-20T11:11:01.404Z",
   "endTime": "2018-02-20T11:11:01.411Z",
   "image": {},
   "video": {}
   }
  ]
 }
}

以下是发送方法：

submit() {

           const data = new FormData();
           data.append('description', this.description);
           for (let index in this.boards) {
               if (this.boards.hasOwnProperty(index)) {
                   data.append('displays[' + index + ']', this.boards[index]);
               }
           }
           for (let index in this.messages) {
               if (this.messages.hasOwnProperty(index)) {
                   data.append('messages[' + index + '][text]', this.messages[index].text);
                   data.append('messages[' + index + '][image]', this.messages[index].imageBlob);
                   data.append('messages[' + index + '][video]', this.messages[index].videoBlob);
                   data.append('messages[' + index + '][startTime]', this.messages[index].startTime);
                   data.append('messages[' + index + '][endTime]', this.messages[index].endTime);
               }
           }

           axios.post('/campaign/', data, {
               headers: {
                   'accept': 'application/json',
                   'Accept-Language': 'en-US,en;q=0.8',
                   'Content-Type': `multipart/form-data; boundary=${data._boundary}`,
               }
           }).then(response => {
               this.feedback = response.data;
           }).catch(error=>{
               this.errors = error
           });
       }

请问，我该如何解决这个问题？