问题
I am creating blob storage to load a file from local path to cloud. Using storage account I have created on portal, I am getting an error: Microsoft.Azure.Storage.StorageException:The specified resource name contains invalid characters. Here is my code below what i am trying to achieve. What is it missing? Please advice
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Azure.Devices.Client;
using Microsoft.Azure.Storage.Blob;
using Microsoft.Azure.Storage;
using System.IO;
namespace BlobStorageApp
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Azure Blob Storage - Net");
Console.WriteLine();
ProcessAsync().GetAwaiter().GetResult();
}
private static async Task ProcessAsync()
{
CloudStorageAccount storageAccount = null;
CloudBlobContainer cloudBlobContainer = null;
string sourceFile = null;
string destinationFile = null;
string storageConnectionString = "DefaultEndpointsProtocol=https;" +
"AccountName=gcobanistorage;" +
"AccountKey=****;" +
"EndpointSuffix=core.windows.net";
if (CloudStorageAccount.TryParse(storageConnectionString, out storageAccount))
{
try
{
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
cloudBlobContainer = cloudBlobClient.GetContainerReference("Test" + Guid.NewGuid().ToString());
await cloudBlobContainer.CreateAsync();
Console.WriteLine("Created container '{0}'", cloudBlobContainer.Name);
Console.WriteLine();
BlobContainerPermissions permissions = new BlobContainerPermissions
{
PublicAccess = BlobContainerPublicAccessType.Blob
};
await cloudBlobContainer.SetPermissionsAsync(permissions);
string localPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
string localFileName = "Test.txt" + Guid.NewGuid().ToString() + "test_.txt";
sourceFile = Path.Combine(localPath, localFileName);
File.WriteAllText(sourceFile,"Good day, how are you!!?");
Console.WriteLine("Temp file = {0}", sourceFile);
Console.WriteLine("Uploading to Blob storage as blob {0}", localFileName);
CloudBlockBlob cloudBlockBlob = cloudBlobContainer.GetBlockBlobReference(localFileName);
await cloudBlockBlob.UploadFromFileAsync(sourceFile);
Console.WriteLine("Listing blobs in container.");
BlobContinuationToken blobContinuationToken = null;
do
{
var resultSegment = await cloudBlobContainer.ListBlobsSegmentedAsync(null, blobContinuationToken);
blobContinuationToken = resultSegment.ContinuationToken;
foreach (IListBlobItem item in resultSegment.Results) {
Console.WriteLine(item.Uri);
}
} while (blobContinuationToken != null);
Console.WriteLine();
destinationFile = sourceFile.Replace("test_eNtsa.txt", "Rest.txt");
Console.WriteLine("Downloading blob to {0}", destinationFile);
Console.WriteLine();
await cloudBlockBlob.DownloadToFileAsync(destinationFile, FileMode.Create);
}
catch(StorageException ex)
{
Console.WriteLine("Error returned from the service:{0}", ex.Message);
}
finally
{
Console.WriteLine("Press any key to delete the sample files and example container");
Console.ReadLine();
Console.WriteLine("Deleting the container and any blobs in contains");
if(cloudBlobContainer != null)
{
await cloudBlobContainer.DeleteIfExistsAsync();
}
Console.WriteLine("Deleting the local source file and local downloaded files");
Console.WriteLine();
File.Delete(sourceFile);
File.Delete(destinationFile);
}
}
else
{
Console.WriteLine("A connection string has not been defined in the system environment variables."
+ "Add a environment variable named 'storageconnectionstring' with your storage"
+ "connection string as a value");
}
}
}
}
Hi Team is there any mate who can help me, as i am getting this exception? What am missing from the solution? The Storage account has been created on portal and i am using connection string from portal, the container has been also created. Is there anything i should be in a position to add or modify? What could be reason for this error? i just want to understand it, maybe i am calling not valid name on my 'connectionString'? Or Kindly please provide me with some idea around this as i am stuck to this problem for close 1 day with no help from internet. Feedback maybe highly appreciated and guidance, thanks as i am looking forward for more details to this problem.
回答1:
Seems your Container name or connection string wrong.
A container name must be a valid DNS name, conforming to the following naming rules: Container names must start with a letter or number, and can contain only letters, numbers, and the dash (-) character. Every dash (-) character must be immediately preceded and followed by a letter or number; consecutive dashes are not permitted in container names. All letters in a container name must be lowercase. Container names must be from 3 through 63 characters long.
Please refer the documentation on Container naming convention
回答2:
In case this helps anyone, I encountered this same error when publishing to an Azure function from Visual Studio. After a bit of poking around, it turns out that during the setup process a new function file was automatically added that included the following code:
[FunctionName("Function")]
public static void Run([BlobTrigger("Path/{name}") ...
Once I changed the
Path/{name} part to lowercase
path/{name}, the error went away.
I ultimately deleted this auto generated file, but it goes to show that you can't always trust the automatic route, and further confirms Sajeetharan's answer.
来源：https://stackoverflow.com/questions/58265382/microsoft-azure-storageexception-the-specified-resource-name-contains-invalid-c