Azure Blob node.js下载Blob文件

Question

我有Node.js应用程序，前端在Angular中，我需要上传和下载文件到Azure Blob/Azure存储

我已经按照这里给出的说明进行了操作：https://github.com/azure/azure-sdk-for-js/blob/master/sdk/storage/storage-blob/samples/typescript/src/basic.ts

下面是我的代码，它列出了BLOB读到可读流

const { BlobServiceClient, StorageSharedKeyCredential, BlobDownloadResponseModel } = require('@azure/storage-blob');

const uuidv1 = require('uuid/v1');

async ListBlob(req,res){
    const blobServiceClient = await BlobServiceClient.fromConnectionString(this.AZURE_STORAGE_CONNECTION_STRING);
    const container = blobServiceClient.getContainerClient('mycontainer');
    const containerClient = await blobServiceClient.getContainerClient(container.containerName);
    let temp = Array();
    // List the blob(s) in the container.
    for await (const blob of containerClient.listBlobsFlat()) {
        temp.push(blob.name);
    }
    const blockBlobClient = containerClient.getBlockBlobClient(temp[2]);
    const downloadBlockBlobResponse = await blockBlobClient.download(0);
    let result = await this.streamToString(downloadBlockBlobResponse.readableStreamBody!);
    res.send(result);

}

async streamToString(readableStream) {
  return new Promise((resolve, reject) => {
    const chunks = [];
    readableStream.on("data", (data) => {
      chunks.push(data.toString());
    });
    readableStream.on("end", () => {
      resolve(chunks.join(""));
    });
    readableStream.on("error", reject);
  });
}

Answer 1

请尝试blockblobclient.downloadtoFile()方法

  const response = await blockBlobClient.downloadToFile("filePath");