如何在 DotNetCore 的 Blob 存储中上传多个文件

Posted 2023-03-28

【中文标题】如何在 DotNetCore 的 Blob 存储中上传多个文件

【英文标题】：How to upload Multiple Files in Blob storage in DotNetCore

【发布时间】：2020-08-10 15:58:05

【问题描述】：

当我尝试上传多个文件时，我能够上传单个文本文件，它只需要单个 文件可以有人帮助我如何上传多个文本文件：

public DemoController(IConfiguration configuration)
    
        _configuration = configuration;
    

我的创建方法：

  public async Task<IActionResult> Create(IFormFile files)
    
        string blobstorageconnection = _configuration.GetValue<string>("blobstorage");

        byte[] dataFiles;

        CloudStorageAccount cloudStorageAccount = CloudStorageAccount.Parse(blobstorageconnection);

        CloudBlobClient cloudBlobClient = cloudStorageAccount.CreateCloudBlobClient();

        CloudBlobContainer cloudBlobContainer = cloudBlobClient.GetContainerReference("demodata");

        BlobContainerPermissions permissions = new BlobContainerPermissions
        
            PublicAccess = BlobContainerPublicAccessType.Blob
        ;
        string systemFileName = files.FileName;
        await cloudBlobContainer.SetPermissionsAsync(permissions);
        await using (var target = new MemoryStream())
        
            files.CopyTo(target);
            dataFiles = target.ToArray();
            Console.WriteLine("upload files Successfully");
        

        CloudBlockBlob cloudBlockBlob = cloudBlobContainer.GetBlockBlobReference(systemFileName);
        await cloudBlockBlob.UploadFromByteArrayAsync(dataFiles, 0, dataFiles.Length);

        return View();
    

我的观点：(Create.cs html)

 @
ViewData["Title"] = "Create";

 <div class="row">
<div class="col-md-6">
    <form method="post" enctype="multipart/form-data" asp-controller="Demo" asp-action="Create">
        <div class="form-group">
            <label> Select File </label>
            <input class="form-control" name="files" multiple="multiple" type="file" />
        </div>
        <div class="form-group">
            <input class="btn btn-success" type="submit" value="Submit" id="demo" text="Succcessfully Uploaded" />

        </div>
    </form>
</div>

【参考方案1】：

请尝试以下代码（未经测试的代码）：

    public async Task<IActionResult> Create(List<IFormFile> files)
    
        string blobstorageconnection = _configuration.GetValue<string>("blobstorage");

        CloudStorageAccount cloudStorageAccount = CloudStorageAccount.Parse(blobstorageconnection);

        CloudBlobClient cloudBlobClient = cloudStorageAccount.CreateCloudBlobClient();

        CloudBlobContainer cloudBlobContainer = cloudBlobClient.GetContainerReference("demodata");

        BlobContainerPermissions permissions = new BlobContainerPermissions
        
            PublicAccess = BlobContainerPublicAccessType.Blob
        ;

        await cloudBlobContainer.SetPermissionsAsync(permissions);

        foreach (var formFile in files)
        
            byte[] data;
            string systemFileName = formFile.FileName;
            await using (var target = new MemoryStream())
            
                formFile.CopyTo(target);
                data = target.ToArray();
                CloudBlockBlob cloudBlockBlob = cloudBlobContainer.GetBlockBlobReference(systemFileName);
                await cloudBlockBlob.UploadFromByteArrayAsync(data, 0, data.Length);
            
        

        return View();
    

本质上，这个想法是传递文件集合，然后在您的控制器操作中循环该集合并单独上传每个项目。