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c# - 将文件从一个 Azure 存储帐户复制到另一个

问题描述

我正在尝试使用复制文件的StartCopy方法将文件从一个存储帐户复制到另一个帐户。检查下面的代码。

CloudStorageAccount sourceStorageAccount = CloudStorageAccount.Parse(@"source storage account connection string");
CloudStorageAccount destStorageAccount = CloudStorageAccount.Parse(@"destination storage account connection string");

CloudBlobClient sourceBlobClient = sourceStorageAccount.CreateCloudBlobClient();
CloudBlobClient destBlobClient = destStorageAccount.CreateCloudBlobClient();
var sourceContainer = sourceBlobClient.GetContainerReference("sourceContainer");
var destContainer = destBlobClient.GetContainerReference("destContainer");

CloudBlockBlob sourceBlob = sourceContainer.GetBlockBlobReference("copy.txt");
CloudBlockBlob targetBlob = destContainer.GetBlockBlobReference("copy.txt");

targetBlob.StartCopy(sourceBlob);

但它总是返回以下错误。

Microsoft.WindowsAzure.Storage.StorageException：“远程服务器返回错误：（404）未找到。”

我在这里想念什么？

请注意，如果我尝试将文件从一个容器复制到同一存储帐户中的另一个容器，则相同的代码可以完美运行。

标签： c#azureazure-storageazure-blob-storage

解决方案

请看以下关于如何执行复制的示例（取自Introducing Asynchronous Cross-Account Copy Blob）：

public static void CopyBlobs(
            CloudBlobContainer srcContainer,  
            string policyId, 
            CloudBlobContainer destContainer)
{
    // get the SAS token to use for all blobs
    string blobToken = srcContainer.GetSharedAccessSignature(
                   new SharedAccessBlobPolicy(), policyId);


    var srcBlobList = srcContainer.ListBlobs(true, BlobListingDetails.None);
    foreach (var src in srcBlobList)
    {
        var srcBlob = src as CloudBlob;

        // Create appropriate destination blob type to match the source blob
        CloudBlob destBlob;
        if (srcBlob.Properties.BlobType == BlobType.BlockBlob)
        {
            destBlob = destContainer.GetBlockBlobReference(srcBlob.Name);
        }
        else
        {
            destBlob = destContainer.GetPageBlobReference(srcBlob.Name);
        }

        // copy using src blob as SAS
        destBlob.StartCopyFromBlob(new Uri(srcBlob.Uri.AbsoluteUri + blobToken));
    }
}

希望能帮助到你！

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