如何使用function app将文件从源文件夹复制到目标文件夹并删除azure存储帐户中的源文件夹文件

我可以将源文件夹blob复制到目标文件夹blob并删除源blob 如何将多个Blob复制到源到目标文件夹并删除源Blob

将源blob复制到目标文件夹时，无法为目标文件夹中的blob指定名称

  public async static void CopyDeleteData(ILogger log)
{
    //copy blobs - from

    var ConnectionString = Environment.GetEnvironmentVariable("AzureWebJobsStorage");
    CloudStorageAccount sourceStorageAccount = CloudStorageAccount.Parse(ConnectionString);
    CloudBlobClient sourceCloudBlobClient = sourceStorageAccount.CreateCloudBlobClient();
    CloudBlobContainer sourceContainer = sourceCloudBlobClient.GetContainerReference("Data");        

    CloudBlockBlob sourceBlob = sourceContainer.GetBlockBlobReference("SourceFolder/");
    CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/");
    var resultSegment = sourceContainer.GetDirectoryReference("SourceFolder/");
    var rootDirFolders = resultSegment.ListBlobsSegmentedAsync(true, BlobListingDetails.Metadata,null, null, null, null).Result;

    try
    {
        foreach (var blob in rootDirFolders.Results)
        {
        log.LogInformation("Blob    " + blob.Uri);
        await targetBlob.StartCopyAsync(blob.Uri);

        }


    }
    catch (Exception ex)
    {
        log.LogError(ex.Message);

        log.LogError( "Error, source BLOB probably has private access only: " + ex.Message);
    }


    await targetBlob.FetchAttributesAsync();


    while (targetBlob.CopyState.Status == Microsoft.WindowsAzure.Storage.Blob.CopyStatus.Pending)
    {
        log.LogError("Status: " + targetBlob.CopyState.Status);
        Thread.Sleep(500);
        await targetBlob.FetchAttributesAsync();
    }


    if (targetBlob.CopyState.Status != Microsoft.WindowsAzure.Storage.Blob.CopyStatus.Success)
    {

        log.LogError("Copy failed with status: " + targetBlob.CopyState.Status);
    }


    await sourceBlob.DeleteAsync();


    log.LogInformation( "Done.");
}

---

当我们使用

targetBlob.startCopySync（blob.Uri）

将blob复制到目标blob时，我们应该将blob名称指定给

targetBlob

。在代码中，可以使用：

CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/");

因此，

targetBlob

只有文件夹目录，而没有blob名称

请参考下面我的代码：

var ConnectionString = "xxxxxx";
CloudStorageAccount sourceStorageAccount = CloudStorageAccount.Parse(ConnectionString);
CloudBlobClient sourceCloudBlobClient = sourceStorageAccount.CreateCloudBlobClient();
CloudBlobContainer sourceContainer = sourceCloudBlobClient.GetContainerReference("data");

CloudBlockBlob sourceBlob = sourceContainer.GetBlockBlobReference("SourceFolder/");
//CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/");   //please remove this line, get "targetBlob" in the foreach loop
var resultSegment = sourceContainer.GetDirectoryReference("SourceFolder/");
var rootDirFolders = resultSegment.ListBlobsSegmentedAsync(true, BlobListingDetails.Metadata, null, null, null, null).Result;

try
{
    foreach (var blob in rootDirFolders.Results)
    {
        string blobUri = blob.Uri.ToString();
        string blobName = blobUri.Substring(blobUri.IndexOf("SourceFolder/") + 13);
        CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/" + blobName);
        await targetBlob.StartCopyAsync(blob.Uri);
    }
}
catch (Exception ex)
{
    ........
}

运行代码后，我们可以发现三个txt文件从

SourceFolder/

复制到

SourceFolder/archivefolder/

（如下两个屏幕截图所示）

---

当我们使用

targetBlob.startCopySync（blob.Uri）

将blob复制到目标blob时，我们应该将blob名称指定给

targetBlob

。在代码中，可以使用：

CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/");

因此，

targetBlob

只有文件夹目录，而没有blob名称

请参考下面我的代码：

var ConnectionString = "xxxxxx";
CloudStorageAccount sourceStorageAccount = CloudStorageAccount.Parse(ConnectionString);
CloudBlobClient sourceCloudBlobClient = sourceStorageAccount.CreateCloudBlobClient();
CloudBlobContainer sourceContainer = sourceCloudBlobClient.GetContainerReference("data");

CloudBlockBlob sourceBlob = sourceContainer.GetBlockBlobReference("SourceFolder/");
//CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/");   //please remove this line, get "targetBlob" in the foreach loop
var resultSegment = sourceContainer.GetDirectoryReference("SourceFolder/");
var rootDirFolders = resultSegment.ListBlobsSegmentedAsync(true, BlobListingDetails.Metadata, null, null, null, null).Result;

try
{
    foreach (var blob in rootDirFolders.Results)
    {
        string blobUri = blob.Uri.ToString();
        string blobName = blobUri.Substring(blobUri.IndexOf("SourceFolder/") + 13);
        CloudBlockBlob targetBlob = sourceContainer.GetBlockBlobReference("SourceFolder/ArchieveFolder/" + blobName);
        await targetBlob.StartCopyAsync(blob.Uri);
    }
}
catch (Exception ex)
{
    ........
}

运行代码后，我们可以发现三个txt文件从

SourceFolder/

复制到

SourceFolder/archivefolder/

（如下两个屏幕截图所示）

---

请记住，最简单的方法是使用

您可以声明性地绑定到容器/blob。例如，这些将允许您读取/写入blob：

此绑定将允许您写入容器：

以下示例显示了如何复制和删除Blob：

using BlobMover.Models;
using Microsoft.Azure.WebJobs;
using Microsoft.Extensions.Logging;
using Microsoft.WindowsAzure.Storage.Blob;
using System;
using System.IO;
using System.Threading.Tasks;

namespace BlobMover
{
    public static class BlobMover
    {
        [StorageAccount("Connection")]
        [FunctionName("BlobMover")]
        public static async Task Run(
            [QueueTrigger("%BlobMover:TriggerQueue%")] BlobMessage msg,
            [Blob("{source}-error/{name}", FileAccess.Write)] CloudBlockBlob error,
            [Blob("{destination}/{name}", FileAccess.Write)] CloudBlockBlob @out,
            [Blob("{source}/{name}", FileAccess.Read)] CloudBlockBlob @in,
            ILogger log)
        {
            var trackingId = Guid.NewGuid();

            await @out.StartCopyAsync(@in);
            await @in.DeleteAsync();
        }
    }
}

---

请记住，最简单的方法是使用

您可以声明性地绑定到容器/blob。例如，这些将允许您读取/写入blob：

此绑定将允许您写入容器：

以下示例显示了如何复制和删除Blob：

using BlobMover.Models;
using Microsoft.Azure.WebJobs;
using Microsoft.Extensions.Logging;
using Microsoft.WindowsAzure.Storage.Blob;
using System;
using System.IO;
using System.Threading.Tasks;

namespace BlobMover
{
    public static class BlobMover
    {
        [StorageAccount("Connection")]
        [FunctionName("BlobMover")]
        public static async Task Run(
            [QueueTrigger("%BlobMover:TriggerQueue%")] BlobMessage msg,
            [Blob("{source}-error/{name}", FileAccess.Write)] CloudBlockBlob error,
            [Blob("{destination}/{name}", FileAccess.Write)] CloudBlockBlob @out,
            [Blob("{source}/{name}", FileAccess.Read)] CloudBlockBlob @in,
            ILogger log)
        {
            var trackingId = Guid.NewGuid();

            await @out.StartCopyAsync(@in);
            await @in.DeleteAsync();
        }
    }
}

---

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