问题描述
我正在尝试将 excel 文件上传到 azure blob 存储
import { DefaultAzureCredential } from '@azure/identity';
import { BlobServiceClient } from '@azure/storage-blob';
// Enter your storage account name
const account = process.env.ACCOUNT_NAME;
// Unique name for the container
const containerName = process.env.CONTAINER_NAME;
// Azure AD Credential information is required to run this sample:
if (
!process.env.AZURE_TENANT_ID ||
!process.env.AZURE_CLIENT_ID ||
!process.env.AZURE_CLIENT_SECRET || !account || !containerName
) {
return next(SystemResponse.badRequestError('Azure AD authentication information not provided,but it is required to run this sample. Exiting.'));
}
const defaultAzureCredential = new DefaultAzureCredential();
const blobServiceClient = new BlobServiceClient(
`https://${account}.blob.core.windows.net`,defaultAzureCredential,);
// Get a reference to a container
const containerClient = blobServiceClient.getContainerClient(containerName);
// Upload data to the blob
const blobName = `${req.files.file.name.split('.')[0]}+${new Date().getTime()}.${req.files.file.name.split('.')[1]}`;
// create blobClient for container
const blockBlobClient = containerClient.getBlockBlobClient(blobName);
// upload file
const uploadBlobResponse = await blockBlobClient.upload(`${containerName}${req.files.file.path}`,req.files.file.size);
我正在使用邮递员上传 excel 文件,但是,只有文件路径存储在 excel 文件中,而不是实际内容,我该如何解决这个问题,请帮忙? && 关于下载文件名的响应
解决方法
我创建了一个 azure function,也许您可以使用 parse-multipart
来接收您的文件:
安装:
npm install parse-multipart
代码:
import { AzureFunction,Context,HttpRequest } from "@azure/functions"
import { DefaultAzureCredential } from '@azure/identity';
import { BlobServiceClient } from '@azure/storage-blob';
const httpTrigger: AzureFunction = async function (context: Context,req: HttpRequest): Promise<void> {
var multipart = require('parse-multipart');
var bodyBuffer = Buffer.from(req.body);
var boundary = multipart.getBoundary(req.headers['content-type']);
var parts = multipart.Parse(bodyBuffer,boundary);
// Enter your storage account name
const account = process.env.ACCOUNT_NAME;
// Unique name for the container
const containerName = process.env.CONTAINER_NAME;
// Azure AD Credential information is required to run this sample:
if (
!process.env.AZURE_TENANT_ID ||
!process.env.AZURE_CLIENT_ID ||
!process.env.AZURE_CLIENT_SECRET || !account || !containerName
) {
return next(SystemResponse.badRequestError('Azure AD authentication information not provided,but it is required to run this sample. Exiting.'));
}
const defaultAzureCredential = new DefaultAzureCredential();
const blobServiceClient = new BlobServiceClient(
`https://${account}.blob.core.windows.net`,defaultAzureCredential,);
// Get a reference to a container
const containerClient = blobServiceClient.getContainerClient(containerName);
// Upload data to the blob
const blobName = `${parts[0].filename.split('.')[0]}+${new Date().getTime()}.${parts[0].filename.split('.')[1]}`;
// create blobClient for container
const blockBlobClient = containerClient.getBlockBlobClient(blobName);
// upload file
const uploadBlobResponse = await blockBlobClient.upload(parts[0].data,parts[0].data.length);
};
原因:
function upload(body: HttpRequestBody,contentLength: number,options?: BlockBlobUploadOptions)
HttpRequestBody 的值应该是 Blob,string,ArrayBuffer,ArrayBufferView or a function which returns a new Readable stream whose offset is from data source beginning
,所以你不应该使用路径。
================更新========================
根据讨论,应该按照相对路径读取文件,并将文件的二进制数据转换为base64字符串。
var fs = require('fs');
var path = require('path');
//set relative path to file
let relativePath = path.relative(process.cwd(),${req.files.file.path});
//reading binary data of file
let binaryData=fs.readFileSync(relativePath);
//converting binary data to base64 string
let base64String=Buffer.from(binaryData).toString("base64")
await blockBlobClient.upload(base64String,req.files.file.size);
================更新2====================
const containerClient = blobServiceClient.getContainerClient(containerName);
// Upload data to the blob
const blobName = `xxx.xlsx`;
// create blobClient for container
const blockBlobClient = containerClient.getBlockBlobClient(blobName);
const downloadBlockBlobResponse = blockBlobClient.downloadToFile("D:\\xxx\\xxx.xlsx");