azure - 如何使用 Azure 函数应用通过 URL 将文件上传到存储位置

Question

我想使用 Azure blob 存储中的 Azure 函数应用通过 URL 将上传文件上传到存储位置。我能够从 Azure blob 中提取文件。但无法通过 url 上传文件。下面我附上了我写的代码。有人可以帮我吗？

#r "Newtonsoft.Json"
#r "Microsoft.WindowsAzure.Storage"
#r "System.IO"


using System;
using System.IO;
using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Blob;
using Microsoft.WindowsAzure.Storage.Auth;
using System.Xml;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Net;

public static void Run(string input, TraceWriter log)
{
        log.Info($"C# manual trigger function processed\n");
        const string StorageAccountName = "";
        const string StorageAccountKey = "";

        var storageAccount = new CloudStorageAccount(new StorageCredentials(StorageAccountName, StorageAccountKey), true);
        var blobClient = storageAccount.CreateCloudBlobClient();
        var container = blobClient.GetContainerReference("hannahtest");
        var Destcontainer = blobClient.GetContainerReference("hannahtestoutput");
        var blobs = container.ListBlobs();
        log.Info($"Creating Client and Connecting");
        foreach (IListBlobItem item in container.ListBlobs(null, false))
        {

               if (item is CloudBlockBlob blockBlob)
               {
                    using (StreamReader reader = new StreamReader(blockBlob.OpenRead())                                     
                    {
                        //old content string will read the blockblob (xml)till end 
                        string oldContent1 = reader.ReadToEnd();    
                        log.Info(oldContent1);

                        var content = new FormUrlEncodedContent(oldContent1);

                        var response = await client.PostAsync("http://www.example.com/recepticle.aspx", content);

                        var responseString = await response.Content.ReadAsStringAsync();
                        log.Info($"Success");
                    }
                }
         }
}

score 0 · Accepted Answer

查看Blob 输出绑定- 这就是从 Azure Functions 上传 Blob 的方式，而不会弄乱 Azure 存储 SDK。

score 0 · Accepted Answer

Azure 函数将多个图像文件上传到 Blob 存储。

使用 Microsoft.WindowsAzure.Storage.Auth；
使用 Microsoft.WindowsAzure.Storage；

使用 Microsoft.WindowsAzure.Storage.Blob；

public static class ImageUploadFunction
{
    [FunctionName("ImageUploadFunction")]
    public static async Task<IActionResult> Run([HttpTrigger(AuthorizationLevel.Function, "post")]HttpRequestMessage req, ILogger log)
    {

        var provider = new MultipartMemoryStreamProvider();
        await req.Content.ReadAsMultipartAsync(provider);
        var files = provider.Contents;
        List<string> uploadsurls = new List<string>();
        foreach (var file in files) {
            var fileInfo = file.Headers.ContentDisposition;
            Guid guid = Guid.NewGuid();
            string oldFileName = fileInfo.FileName;
            string newFileName = guid.ToString();
            var fileExtension = oldFileName.Split('.').Last().Replace("\"", "").Trim();
            var fileData = await file.ReadAsByteArrayAsync();
            try {
                //Upload file to azure blob storage method
                var upload = await UploadFileToStorage(fileData, newFileName + "." + fileExtension);
                uploadsurls.Add(upload);
            }
            catch (Exception ex) {
                log.LogError(ex.Message);
                return new BadRequestObjectResult("Somthing went wrong.");
            }
        }
        return uploadsurls != null
              ? (ActionResult)new OkObjectResult(uploadsurls)
               : new BadRequestObjectResult("Somthing went wrong.");                 
    }
    private static async Task<string> UploadFileToStorage(byte[] fileStream, string fileName)
    {
        // Create storagecredentials object by reading the values from the configuration (appsettings.json)
        StorageCredentials storageCredentials = new StorageCredentials("<AccountName>", "<KeyValue>");

        // Create cloudstorage account by passing the storagecredentials
        CloudStorageAccount storageAccount = new CloudStorageAccount(storageCredentials, true);

        // Create the blob client.
        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

        // Get reference to the blob container by passing the name by reading the value from the configuration (appsettings.json)
        CloudBlobContainer container = blobClient.GetContainerReference("digital-material-library-images");

        // Get the reference to the block blob from the container
        CloudBlockBlob blockBlob = container.GetBlockBlobReference(fileName);

        // Upload the file
        await blockBlob.UploadFromByteArrayAsync(fileStream,0, fileStream.Length);

        blockBlob.Properties.ContentType = "image/jpg";
        await blockBlob.SetPropertiesAsync();

        return blockBlob.Uri.ToString();
        //return await Task.FromResult(true);
    }


}

azure - 如何使用 Azure 函数应用通过 URL 将文件上传到存储位置

2 回答 2

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