无法通过DRF上传文件

# serializers.py
from rest_framework import serializers

class FileUploadSerializer(serializers.Serializer):
    file = serializers.FileField()

# views.py
from rest_framework.views import APIView
from rest_framework.response import Response

class FileUploadView(APIView):
    def post(self, request):
        serializer = FileUploadSerializer(data=request.data)
        if serializer.is_valid():
            file = serializer.validated_data['file']
            # 处理文件上传逻辑，例如保存文件到指定路径
            file_path = '/path/to/save/file'
            with open(file_path, 'wb+') as destination:
                for chunk in file.chunks():
                    destination.write(chunk)
            # 返回文件上传结果
            return Response({'file_url': 'http://example.com/path/to/file'})
        else:
            return Response(serializer.errors, status=400)