Question

我正在尝试将图像上传到AWS s3，但是它不起作用（底部提到了错误详细信息）。

我正在使用React和Django rest框架。

在这里，当用户上传图像时，第一个后端将使用我计划将图像上传到s3服务器的react中的signed_url来提供signed_url。

我正在使用heroku服务器，并且正在关注他们的doc

我的s3桶区域是美国东部（俄亥俄州）

到目前为止我所做的

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'
AWS_S3_CUSTOM_DOMAIN = '%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME
AWS_S3_OBJECT_PARAMETERS = {
    'CacheControl': 'max-age=86400',
}

urls.py

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

]

views.py

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},
                {"x-amz-algorithm": "AWS4-HMAC-SHA256"}
            ],
            ExpiresIn=3600
        )

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

我从后端收到的响应（Signed_url）

signed_url: {
  url: 'https://my-site.s3.amazonaws.com/',
  fields: {
    acl: 'public-read',
    'Content-Type': 'image/jpeg',
    key: 'xxxxxxxxxxx.jpg',
    AWSAccessKeyId: 'XX...accessKeyID...XX',
    policy: 'eyJleHBpcmF0adfgdgdfgdfgd4566MjVaIiwgImNvbmRpdGlvbnMiOiBbeyJhY2wiOiAicHVibGljLXJlYWQifSwgeyJDb250ZW50LVghjhgjghZ2UvanBlZyJ9LCB7IngtYW16LWFsZ29yaXRobSI6ICJBV1M0LUhNQUMtU0hBMjU2In0sIHsiYnVja2V0IjogImRyLW5vb3IifSwgeyJrZXkiOiAieHh4eHh4eHh4eHguanBnIn1dfQ==',
    signature: 'GFXgCvycTyVGjfghkUTYomevQZ0='
  }
},
url: 'https://my-site.s3.amazonaws.com/xxxxxxxxxxx.jpg'

}，

这是我在前端处理响应的方式

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

    //alert(image.type)
    const image_name = image.name
    const type = image.type

    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();
            var key
            for (key in res.data.signed_url.fields) {

                postData.append(key, res.data.signed_url.fields[key]);
            }
            postData.append('file', image_name);

            // This axios request expected to save image to s3, but its not 
            //working

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

};

这是我得到的错误

<?xml version="1.0" encoding="UTF-8"?>
  <Error>
  <Code>InvalidRequest</Code>
  <Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message>
  <RequestId>087F2CAF7A334FFE</RequestId> 
 <HostId>WyD+oGgQpPMjoIwbO1HNtweKheAsr9pV40nh1VJ+Hk+KUCXy6YsCoxA0aOjPpX+ASwy4bSesPbQ=</HostId>
</Error>

使用AWS S3 Django无法上传图片

0 个答案: