是否可以将容器的整个Blob(具有文件)复制到Java中的另一个预订容器Blob [英] Is it possible to copy whole blob of a container (having files)to another subscription container blob in java

问题描述

我想从blob复制数据，例如storageaccount/container/folder1/folder2/folder3.现在，我想将folder3数据复制到另一个订阅容器blob.

I want to copy data from blob e.g storageaccount/container/folder1/folder2/folder3 . Now I want to copy folder3 data to another subscription container blob.

我正在使用java和azure sdk，startcopy使用SAS将源复制到目标.但每次都说不存在blob.

I am using java and azure sdk, startcopy to copy source to destination using SAS. but everytime it says that blob does not exist.

但是，如果我给出的源路径是这样的:storageaccount/container/folder1/folder2/folder3/xyz.txt，则它能够将数据从源复制到目标. 不能将整个folder3数据复制到目标位置，而不是遍历所有文件吗?

But if source path I give like this : storageaccount/container/folder1/folder2/folder3/xyz.txt then it is able to copy data from source to destination. Cant we copy whole folder3 data to destination?instead of looping through all the files?

推荐答案

您提到了startcopy方法，假设您使用的是v8 sdk.您说使用storageaccount/container/folder1/folder2/folder3时会说blob不存在，因为您只提供了一个目录，而

You mention startcopy method, suppose you are using v8 sdk. You say when use storageaccount/container/folder1/folder2/folder3 it will say that blob does not exist, cause you just provide a directory and the startcopy need the CloudBlockBlob object.

因此正确的方法应该是在目录下列出blob，然后循环blob并复制blob.下面是我的测试代码，为了进行测试，我只是将目录复制到另一个容器中.

So the right way should be list the blobs under the directory, then loop the blobs and copy the blob. The below is my test code, for test I just copy a directory to another container.

        CloudStorageAccount storageAccount = CloudStorageAccount.parse(connectStr);
        CloudBlobClient blobClient = storageAccount.createCloudBlobClient();
        try {
            CloudBlobContainer container = blobClient.getContainerReference("test");
            Iterable<ListBlobItem> blobs=container.listBlobs("testfolder/");
            CloudBlobContainer destcontainer=blobClient.getContainerReference("testcontainer");

            for(ListBlobItem blob:blobs){
                CloudBlockBlob srcblob=new CloudBlockBlob(blob.getUri());
                CloudBlockBlob destblob= destcontainer.getBlockBlobReference(srcblob.getName());
                destblob.startCopy(srcblob);

            }

        } catch (StorageException e) {
            e.printStackTrace();
        }

更新:关于复制操作的状态，有一种方法

Update: about the status about copy action, there is a method getCopyState, you could get the state details, hope this is what you want. More details check the method.

CopyState st=destblob.getCopyState();
System.out.println(st.getStatus());

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