我有一个URL,该URL类似于包含文件的“ https://XXXXXXXX-functions.azurewebsites.net/api/UploadedZIPFile?ticket=1234&code=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX”。 “ UploadedZIPFile”是文件名。在URL中,我没有文件名的扩展名。将文件下载到我的系统后,它将显示扩展名。我想将来自URL的文件上传到Azure blob存储中。如何使用c#从给定的URL将文件上传到Azure Blob存储?请在下面添加我的代码示例
public async Task<string> automaticFileUpload(string ticketNum, string type, string fileURL)
{
Uri uri = new Uri(fileURL);
string fileName = System.IO.Path.GetFileName(uri.LocalPath);
string extension = ".zip";
string finalFileName = fileName + extension;
var connectionString = "xxxxxxx";
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer cloudBlobContainer =
cloudBlobClient.GetContainerReference("xxxxxxx");
await cloudBlobContainer.CreateIfNotExistsAsync();
BlobContainerPermissions permissions = new BlobContainerPermissions
{
PublicAccess = BlobContainerPublicAccessType.Blob
};
await cloudBlobContainer.SetPermissionsAsync(permissions);
if (!cloudBlobContainer.GetPermissionsAsync().Equals(BlobContainerPublicAccessType.Off))
{
await cloudBlobContainer.SetPermissionsAsync(new BlobContainerPermissions
{
PublicAccess = BlobContainerPublicAccessType.Off
});
}
CloudBlockBlob blockblob = cloudBlobContainer.GetBlockBlobReference(finalFileName);
blockblob.Properties.ContentType = "application/zip";
using (var client = new HttpClient())
{
//get the url
var request = new HttpRequestMessage(HttpMethod.Get, fileURL);
var sendTask = client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);
var response = sendTask.Result;
HttpStatusCode status = response.StatusCode;
if (status == HttpStatusCode.OK)
{
var httpStream = response.Content.ReadAsStreamAsync().Result;
MemoryStream ms = new MemoryStream();
httpStream.CopyTo(ms);
ms.Position = 0;
await blockblob.UploadFromStreamAsync(ms);
return blockblob.Uri.AbsoluteUri;
}
}
return null;
}
到目前为止,我正在使用文件扩展名和内容类型的硬编码值,但我需要动态值
预先感谢
答案 0 :(得分:1)
您可以在响应标题中获得content-type
,请参见:
然后从该way中的内容类型获取文件extension
。
有用于使用HttpWebResponse获取标头的代码。有关更多详细信息,请参见document。
// Creates an HttpWebRequest for the specified URL.
HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
// Sends the HttpWebRequest and waits for response.
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
// Displays all the headers present in the response received from the URI.
Console.WriteLine("\r\nThe following headers were received in the response:");
// Displays each header and it's key associated with the response.
for(int i=0; i < myHttpWebResponse.Headers.Count; ++i)
Console.WriteLine("\nHeader Name:{0}, Value :{1}",myHttpWebResponse.Headers.Keys[i],myHttpWebResponse.Headers[i]);
// Releases the resources of the response.
myHttpWebResponse.Close();