Boto3 S3错误-调用PutObjectAcl时出现AccessDenied

Question

尝试使用以下代码为上传到S3存储桶中的文件生成可公开访问的URL：

client = boto3.client('s3', config=botocore.client.Config(signature_version=botocore.UNSIGNED))
client.put_object_acl(Bucket="my-bucket", Key=filename, ACL='public-read')

引发异常：

botocore.exceptions.ClientError: An error occurred (AccessDenied) when calling the PutObjectAcl operation: Access Denied

我的S3存储桶具有以下策略：

{
    "Version": "2008-10-17",
    "Statement": [
        {
            "Sid": "",
            "Effect": "Allow",
            "Principal": {
                "AWS": "*"
            },
            "Action": [
                "s3:GetObject",
                "s3:GetObjectAcl",
                "s3:PutObjectAcl"
            ],
            "Resource": "arn:aws:s3:::my-bucket/*",
            "Condition": {}
        }
    ]
}

任何提示都将受到欢迎！ 谢谢