azure - 如何使用 Azure JavaScript SDK 访问 blob 元数据？

Question

如何通过 JavaScript SDK 读取 azure 中 blob 的元数据？

当我迭代从指定容器返回的 blob 时，我看到一个元数据属性:

但它是未定义的，即使肯定存在与 blob 关联的元数据:

我还需要做些什么才能填充元数据吗？

import { BlobServiceClient, SharedKeyCredential } from "@azure/storage-blob";

const account = "<redacted>";
const accountKey = "<redacted>";
const sharedKeyCredential = new SharedKeyCredential(account, accountKey);
const blobServiceClient = new BlobServiceClient(`https://${account}.blob.core.windows.net`, sharedKeyCredential);
const containerClient = blobServiceClient.getContainerClient(podcastName);

const blobs = await containerClient.listBlobsFlat({ include: ["metadata"] });
for await (const blob of blobs) {
  console.log(blob.name);
  //blob.metadata is undefined
}

<小时/>

// package.json relevant dependencies
"dependencies": {
  "@azure/storage-blob": "^12.0.0-preview.2
}

Answer 1

// You can try this: 
for await (const blob of containerClient.listBlobsFlat()) {
    const blockBlobClient = containerClient.getBlockBlobClient(blob.name);
    const meta = (await blockBlobClient.getProperties()).metadata;
    console.log(meta);
    // process metadata
}

• 我假设您已经声明了 blockBlobClient 和 containerClient。
• 如果您还没有声明 blockBlobClient 和 containerClient ，那么您可以引用 here