Azure 应用服务 - 写入文件系统 - ASP.NET Web 应用程序

使用 Azure 应用服务 可以轻松地将 ASP.NET Web 应用程序部署到云上，并且可以方便地进行文件系统的读写操作。本文将介绍如何在 ASP.NET Web 应用程序中使用 Azure 应用服务进行文件系统的写入操作，并提供一个案例代码来演示。

csharp
using Microsoft.Extensions.Logging;
using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Blob;
using System.IO;
public class FileService
{
    private readonly CloudBlobContainer _container;
    private readonly ILogger _logger;
    public FileService(string connectionString, string containerName, ILogger logger)
    {
        CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);
        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
        _container = blobClient.GetContainerReference(containerName);
        _logger = logger;
    }
    public async Task WriteFileAsync(string fileName, string content)
    {
        CloudBlockBlob blockBlob = _container.GetBlockBlobReference(fileName);
        using (MemoryStream memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(content)))
        {
            await blockBlob.UploadFromStreamAsync(memoryStream);
        }
        _logger.LogInformation($"File '{fileName}' has been written to Azure Blob Storage.");
        return blockBlob.Uri.ToString();
    }
}

csharp
public void ConfigureServices(IServiceCollection services)
{
    // ...
    services.AddSingleton(sp => new FileService(Configuration["AzureStorageConnectionString"], Configuration["ContainerName"], sp.GetRequiredService>()));
    // ...
}

csharp
public class FileController : Controller
{
    private readonly FileService _fileService;
    public FileController(FileService fileService)
    {
        _fileService = fileService;
    }
    public async Task WriteFile()
    {
        string fileName = "example.txt";
        string content = "This is an example file.";
        string fileUri = await _fileService.WriteFileAsync(fileName, content);
        return Content($"File has been written to Azure Blob Storage. URI: {fileUri}");
    }
}