Azure java:找不到指定的签名标识符的SAS标识符

时间:2016-11-10 14:08:19

标签: java azure azure-storage-blobs azure-java-sdk

我正在使用SDK for java来破解SAS以访问blob。 这是代码:

SharedAccessBlobPolicy policy = new SharedAccessBlobPolicy();
policy.setPermissionsFromString("r");
Calendar date = Calendar.getInstance();
Date expire = new Date(date.getTimeInMillis() + (expirationMinutes * 60000));
Date start = new Date(date.getTimeInMillis());
policy.setSharedAccessExpiryTime(expire);
policy.setSharedAccessStartTime(start);
return blob.getUri().toString()+"?"+blob.generateSharedAccessSignature(policy, externalFileName);

但是当我尝试使用url访问blob时,我收到了这个错误:

<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:f1f169d2-0001-003f-115a-3be1d6000000 Time:2016-11-10T13:57:14.6192554Z
</Message>
<AuthenticationErrorDetail>
SAS identifier cannot be found for specified signed identifier
</AuthenticationErrorDetail>
</Error>

我在NET中为同一个blob做同样的事情,结果url(有效)与我得到的那个不同:

不起作用(java):

/mycontainer/privadoPrueba/cat1.jpg?sig=FFLVk%2FPViHBZhH1JIW6wBbWiJ0%2Bgz0U8wjFzgRoytNo%3D&st=2016-11-10T13%3A55%3A06Z&se=2016-11-10T14%3A06%3A06Z&sv=2015-07-08&si=privadoPrueba%2Fcat1.jpg&sp=r&sr=b

Works(NET):

/mycontainer/privadoPrueba/cat1.jpg?sv=2015-07-08&sr=b&sig=WyiJWltZFj1AkkzST6mo2NjBF1tRSXxrkMP5LEAGJNk%3D&st=2016-11-10T14%3A05%3A41Z&se=2016-11-10T14%3A16%3A41Z&sp=r

我该如何解决这个问题?

1 个答案:

答案 0 :(得分:3)

只需查看SAS令牌,即可指定具有文件名的策略。这可能不是你想做的,也不是.NET SAS令牌。

我想问题就在这里:

blob.generateSharedAccessSignature(policy, externalFileName);

如果API类似于.NET,则第二个参数可能是策略名称。

请改为尝试:

blob.generateSharedAccessSignature(policy, null);