Question

我正在创建一个控制台应用程序，它将所有容器中的所有blob从我们用于生产的帐户复制到我们用于开发的另一个帐户。我有以下方法来做到这一点。 'productionStorage'和'developmentStorage'对象位于另一个装有Azure存储客户端方法的程序集中。

    static void CopyBlobsToDevelopment()
    {
        // Get a list of containers in production
        List<CloudBlobContainer> productionBlobContainers = productionStorage.GetContainerList();

        // For each container in production...
        foreach (var productionContainer in productionBlobContainers)
        {
            // Get a list of blobs in the production container
            var blobList = productionStorage.GetBlobList(productionContainer.Name);

            // Need a referencee to the development container
            var developmentContainer = developmentStorage.GetContainer(productionContainer.Name);

            // For each blob in the production container...
            foreach (var blob in blobList)
            {
                CloudBlockBlob targetBlob = developmentContainer.GetBlockBlobReference(blob.Name);
                targetBlob.StartCopyFromBlob(new Uri(blob.Uri.AbsoluteUri));
            }
        }
    }

我在targetBlob.StartCopyFromBlob()行收到错误（404）。但我不明白为什么我会收到404错误。 blob确实存在于源（生产）中，我想将其复制到目标（开发）。不知道我做错了什么。

Answer 1

因为源blob容器ACL是Private，所以您需要做的是创建SAS令牌（在blob容器上或在该容器中的单个blob上）并Read权限并附加这个SAS令牌到你的blob的URL。请参阅以下修改后的代码：

    static void CopyBlobsToDevelopment()
    {
        // Get a list of containers in production
        List<CloudBlobContainer> productionBlobContainers = productionStorage.GetContainerList();

        // For each container in production...
        foreach (var productionContainer in productionBlobContainers)
        {
            //Gaurav --> create a SAS on source blob container with "read" permission. We will just append this SAS
            var sasToken = productionContainer.GetSharedAccessSignature(new SharedAccessBlobPolicy()
            {
                Permissions = SharedAccessBlobPermissions.Read,
                SharedAccessExpiryTime = DateTime.UtcNow.AddDays(1),
            });
            // Get a list of blobs in the production container
            var blobList = productionStorage.GetBlobList(productionContainer.Name);

            // Need a referencee to the development container
            var developmentContainer = developmentStorage.GetContainer(productionContainer.Name);

            // For each blob in the production container...
            foreach (var blob in blobList)
            {
                CloudBlockBlob targetBlob = developmentContainer.GetBlockBlobReference(blob.Name);
                targetBlob.StartCopyFromBlob(new Uri(blob.Uri.AbsoluteUri + sasToken));
            }
        }
    }

我没有尝试过运行此代码，所以如果您遇到此代码的任何错误，请原谅。但希望你明白了。

无法将blob从一个容器复制到另一个容器

1 个答案: