【发布时间】：2016-04-01 05:02:59
【问题描述】：
我正在尝试使用 Azure Python SDK 为 Azure 存储中的容器创建有效的共享访问签名 URL。我正在尝试使其立即生效，在 30 天后过期，并授予对整个容器（而不仅仅是 blob）的读写访问权限。下面的代码工作正常，并在最后打印最终 URL。我还在门户中手动验证了容器和 blob 已成功创建。
但是，将 URL 粘贴到浏览器后，我收到以下错误消息：
<?xml version="1.0" encoding="UTF-8"?>
-<Error>
<Code>AuthenticationFailed</Code>
<Message>Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. RequestId:adecbe4e-0001-007c-0d19-40670c000000 Time:2015-12-26T20:10:45.9030215Z</Message>
<AuthenticationErrorDetail>Signature fields not well formed.</AuthenticationErrorDetail>
</Error>看来问题一定出在这行代码上：
sasToken = blob_service.generate_shared_access_signature(containerName, None,SharedAccessPolicy(AccessPolicy(None, todayPlusMonthISO, "rw"), None))
这是完整的代码示例：
from azure.storage.blob import BlobService
import datetime
from azure.storage import AccessPolicy, CloudStorageAccount, SharedAccessPolicy
containerName = "testcontainer"
blobName = "testblob.txt"
azureStorageAccountName = "" # Removed for publishing to StackOverflow
azureStorageAccountKey = "" # Removed for publishing to StackOverflow
blob_service = BlobService(account_name=azureStorageAccountName, account_key=azureStorageAccountKey)
blob_service.create_container(containerName)
blob_service.put_block_blob_from_text(containerName,blobName,"Hello World")
today = datetime.datetime.utcnow()
todayPlusMonth = today + datetime.timedelta(30)
todayPlusMonthISO = todayPlusMonth.isoformat()
sasToken = blob_service.generate_shared_access_signature(containerName, None,SharedAccessPolicy(AccessPolicy(None, todayPlusMonthISO, "rw"), None))
url = "https://" + azureStorageAccountName + ".blob.core.windows.net/" + containerName + "/" + blobName + "?" + sasToken
print(url)
任何想法如何解决这个问题？谢谢！
【问题讨论】：
标签： python azure sdk azure-storage azure-blob-storage