Django+DRF FileUpload:上传大文件时如何获取上传进度

# views.py
from rest_framework.views import APIView
from rest_framework.parsers import FileUploadParser
from django.core.signals import request_finished
from django.dispatch import receiver

class FileUploadView(APIView):
    parser_classes = (FileUploadParser,)

    def post(self, request, format=None):
        file_obj = request.data['file']
        # 处理文件上传逻辑

@receiver(request_finished)
def upload_progress(sender, **kwargs):
    # 获取上传进度逻辑
    pass

// frontend.js
var xhr = new XMLHttpRequest();
xhr.open('POST', '/upload/', true);
xhr.upload.onprogress = function(e) {
    if (e.lengthComputable) {
        var percent = Math.round((e.loaded / e.total) * 100);
        console.log('上传进度：' + percent + '%');
    }
};
xhr.send(formData);