c# - 使用Azure功能下载文件并将其存储到Azure

Question

我想从第三方服务器下载文件并存储在 Azure 存储中。但我想使用 Azure 功能执行此过程。以下是我想要实现的步骤。

1. 使用 WebHook 创建将由第三方服务器执行的 Azure(HTTP 触发器启用)函数。
2. 使用 C# 中的“Webclient”通过 Webhook 提供的下载 URL 下载文件内容。

3. 将文件内容直接存储到 Azure 存储中。

      
       Task.Run(() =>
       {
       using (var webClient = new WebClient())
       {
           webClient.Headers.Add(HttpRequestHeader.Authorization, string.Format("Bearer {0}", {download token}));
           webClient.Headers.Add(HttpRequestHeader.ContentType, "application/json");
           webClient.DownloadFileAsync("https://www.server.com/file1.mp4", {Here I want to store file into Azure Storage});
           }
           });
           

Answer 1

您可以像这样将文件放入 req 的请求正文中，然后将其上传到 Azure Blob 存储。

using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Microsoft.WindowsAzure.Storage;

namespace FunctionApp5
{
    public static class Function1
    {
        [FunctionName("Function1")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            //Here is the keycode.

            //Connect to the Storage Account.
            var storageAccount = CloudStorageAccount.Parse("DefaultEndpointsProtocol=https;AccountName=bowmanimagestorage02;AccountKey=xxxxxxxfile.core.windows.net/");
            var myClient = storageAccount.CreateCloudBlobClient();

            //Here is the container name on portal.
            var container = myClient.GetContainerReference("test");

            //Here is the name you want to save as.
            var blockBlob = container.GetBlockBlobReference("something.txt");

            //Put the stream in this place.
            await blockBlob.UploadFromStreamAsync(req.Body);


            string name = req.Query["name"];

            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
            dynamic data = JsonConvert.DeserializeObject(requestBody);
            name = name ?? data?.name;

            return name != null
                ? (ActionResult)new OkObjectResult($"Hello, {name}")
                : new BadRequestObjectResult("Please pass a name on the query string or in the request body");
        }
    }
}

当然你也可以传入数据流，关键代码是一样的。