Reactjs 如何使用react和django rest框架将图像上载到aws s3

我正在尝试使用react和drf将图像上载到aws s3。我正在关注这一点。我收到错误提示，请求失败，状态代码为400

正如他们在第一个链接中建议的那样，我从后端创建了签名url

urlpatterns = [ 
   path('api/create-permission/aws-s3/', SignS3Upload.as_view(), name='aws-s3'),    
]

import os
import boto3
import mimetypes
s3 = boto3.client('s3')

class SignS3Upload(APIView):
    # authentication_classes = (authentication.SessionAuthentication,)
    # permission_classes = [IsAuthenticated, ]

    def get(self, request):
        s3_bucket = os.environ.get('AWS_STORAGE_BUCKET_NAME')
        file_name = request.GET['image_name']
        file_type = mimetypes.guess_type(file_name)[0]
        presigned_post = s3.generate_presigned_post(
            Bucket=s3_bucket,
            Key=file_name,
            Fields={"acl": "public-read", "Content-Type": file_type},
            Conditions=[
                {"acl": "public-read"},
                {"Content-Type": file_type}
            ],
            ExpiresIn=3600
        )

        data = {
            "signed_url": presigned_post,
            'url': 'https://%s.s3.amazonaws.com/%s' % (s3_bucket, file_name)
        }
        return Response(data) 

在前端，我使用React和Redux。这里是我如何从前端发送请求的

export const getSignedRequest = (image) => (dispatch, getState) => {

    const image_name = image.name

    axios.get('https://my-site.herokuapp.com/api/blog/api/create-permission/aws-s3/', { params: { image_name } })
        .then((res) => {
            dispatch({
                type: GET_PARTICULAR_BLOG_IMG_UPLOAD,
                payload: res.data
            });


            var postData = new FormData();
            for (key in res.data.fields) {
                postData.append(key, res.data.fields[key]);
            }
            postData.append('file', image_name);

            return axios.post(res.data.url, postData);
        })
        .then((res) => {
            dispatch({
                type: GET_PARTICULAR_BLOG_IMG_UPLOAD_AWS,
                payload: res.data
            });
        })
        .catch((err) => {
            console.log(err)
        });

};

我在前端收到了第一个axios请求的响应，如下所示

signed_url: {
  url: 'https://my-site.s3.amazonaws.com/',
  fields: {
    acl: 'public-read',
    'Content-Type': 'image/jpeg',
    key: 'xxxxxxxxxxx.jpg',
    AWSAccessKeyId: 'xxx_access_id_xxxx',
    policy: 'xxx_policy_xxx',
    signature: 'xxx_signature_xxx'
  }
},
url: 'https://my-site.s3.amazonaws.com/xxxxxxxxxxx.jpg'

},

这里是settings.py

AWS_ACCESS_KEY_ID = os.environ.get('AWS_ACCESS_KEY_ID')
AWS_SECRET_ACCESS_KEY = os.environ.get('AWS_SECRET_ACCESS_KEY')
AWS_STORAGE_BUCKET_NAME = os.environ.get('AWS_STORAGE_BUCKET_NAME')
AWS_S3_FILE_OVERWRITE = False
AWS_DEFAULT_ACL = None
DEFAULT_FILE_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'

---

您可以使用下面的库来上传将

https://django-storages.readthedocs.io/en/latest/backends/amazon-S3.html

---

我只使用它，我已经编辑了我的问题，请看一下。在console.log（err）上，它只显示请求失败，状态代码为400。你能告诉我在哪里可以找到细节错误吗？请接受我的建议，这对编程来说相当陌生：）您可以单击网络，您可以打开响应InvalidRequest您提供的授权机制不受支持。请使用AWS4-HMAC-SHA256.908A1A8D2F31C9B9Yg9fQE/MYKFEEC+kAppSWEIVU2WTsZNUGQZFJgXHUwIolndm5fp0SYbcgi7hjk5RUn2/oWDFj0=来自aws s3的its，