花费很多时间尝试解决这个问题。
我有一个表,想要创建一个只读SAS并给客户端组件读取访问权限。但永远不会成功。
如果只是直接使用连接字符串和挂钩表:
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(SliStorageConnection);
// Create the table client.
CloudTableClient tableClient = storageAccount.CreateCloudTableClient();
var table = tableClient.GetTableReference(GlobalFilterTable);
TableOperation tableOperation = TableOperation.Retrieve<TableEntity>(FilterTablePartition, "filter1");
TableResult tableResult = table.Execute(tableOperation);
工作正常。但是使用下面的SAS,总是返回501 Not Implemented
var policy = new SharedAccessTablePolicy
{
SharedAccessExpiryTime = DateTime.Now.AddMinutes(30),
Permissions = SharedAccessTablePermissions.Query
};
string sas = table.GetSharedAccessSignature(
policy,
null,
FilterTablePartition,
String.Empty,
FilterTablePartition,
String.Empty);
Uri tableSasUri = new Uri(table.Uri, sas);
AccessTable(tableSasUri.AbsoluteUri.ToString());
private static void AccessTable(string tableSas)
{
string filterTableBaseUrl = tableSas.Substring(0, tableSas.IndexOf('?'));
var filterTableSasCredentials = new StorageCredentials(tableSas.Substring(filterTableBaseUrl.Length));
CloudTableClient tableClient = new CloudTableClient(new Uri(filterTableBaseUrl), filterTableSasCredentials);
var _manifestFilterCloudTable = tableClient.GetTableReference(GlobalFilterTable);
TableOperation tableOperation = TableOperation.Retrieve<TableEntity>(FilterTablePartition, "filter1");
TableResult tableResult = _manifestFilterCloudTable.Execute(tableOperation);
}
尝试了不同的方式,给出不到1小时的时间,命名或匿名策略标识符,仅使用签名(“sig”)来创建StorageCredentials
。所有失败都有不同的错误。主要是501 not implemented
,有时resource not found
,有时403 Forbidden
。
无法在线查找有用信息。我正在使用Microsoft.WindowsAzure.Storage
版本3.1 SDK。
非常感谢任何帮助
答案 0 :(得分:4)
我认为问题出在以下两行代码中:
CloudTableClient tableClient = new CloudTableClient(new Uri(filterTableBaseUrl), filterTableSasCredentials);
var _manifestFilterCloudTable = tableClient.GetTableReference(GlobalFilterTable);
基本上发生的事情是表名在manifestFilterCloudTable
的表格网址中重复两次。在创建CloudTableClient
时,URI不应包含表名。它应该只是https://[youraccountname].table.core.windows.net
。
请在AccessTable
方法中使用以下代码:
string filterTableBaseUrl = tableSas.Substring(0, tableSas.IndexOf('?'));
var filterTableSasCredentials = new StorageCredentials(tableSas.Substring(filterTableBaseUrl.Length));
filterTableBaseUrl = filterTableBaseUrl.Substring(0, filterTableBaseUrl.LastIndexOf("/"));
tableClient = new CloudTableClient(new Uri(filterTableBaseUrl), filterTableSasCredentials);
var _manifestFilterCloudTable = tableClient.GetTableReference("Address");
TableOperation tableOperation = TableOperation.Retrieve<TableEntity>(FilterTablePartition, "filter1");
TableResult tableResult = _manifestFilterCloudTable.Execute(tableOperation);
我注意到另一件事,对于SharedAccessPolicy,你正在使用DateTime.Now
。根据执行代码的时区,您可能会遇到403错误,因为Azure中的日期/时间是UTC。请改用DateTime.UtcNow
。