前言
实现一个Web Api,把女朋友照片保存到Azure云的storage里。
Image Upload Api
在对应的Api Controller里,加上attribute:
[Consumes("application/json", "multipart/form-data")]
然后定义一个model,用来接收上传的图片:
////// Image model/// public class UploadImage{ ////// imageFile /// public IFormFile imageFile { get; set; }}
实现对应的Api,处理客户端上传图片的请求:
////// UploadImage/// /// ///[HttpPost][Route("imageupload")]public async Task UploadImage([FromForm]UploadImage imageData){ var stream = imageData.imageFile.OpenReadStream(); var name = imageData.imageFile.FileName; var uploadResult = await UploadFileAsBlob(stream, name); return Ok(name);}
创建Storage
在Azure云服务创建相应的Storage,并在对应的Storage下建一个Blob,最后在Blob里创建一个Container,在storage的Access keys里,保存connection string,这个是服务端连接storage的credential key。
因为现在的云服务都是图形化操作,这里不再详述,在Portal都有对应的操作。保存图片在Blob中
引用两个namespace:
using Microsoft.WindowsAzure.Storage;using Microsoft.WindowsAzure.Storage.Blob;
连接Azure storage:
////// Save image to Azure blob/// /// /// ///public async Task UploadFileAsBlob(Stream stream, string filename){ CloudStorageAccount storageAccount = CloudStorageAccount.Parse("StorageAccountConnectionString"); // Create the blob client. CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient(); // Retrieve a reference to a container. CloudBlobContainer container = blobClient.GetContainerReference("BlobContainerName"); CloudBlockBlob blockBlob = container.GetBlockBlobReference(filename); await blockBlob.UploadFromStreamAsync(stream); stream.Dispose(); return blockBlob?.Uri.ToString(); }
Postman上传效果
选择Body,在body里选择form-data,然后把key设置成model里的变量名称:
最后保存在Azure的storage中,
在浏览器地址栏输入storage 的地址+ 照片名称,把女朋友的照片下载到本地。