我正在尝试创建一个实用程序来从 Internet 下载文件并将其再次上传到 Azure blob 存储。 Blob 容器已经创建良好;但由于某种原因,当我尝试将文件上传到存储时,我收到“错误请求 400”异常...创建了容器名称,小写字母,特殊字符。但我仍然不知道为什么我会遇到异常!
请帮忙。
注意:
- 我没有使用任何模拟器...直接在云端测试。
- 我的所有容器都具有“公共(public)容器”访问选项。
这是一个异常(exception):
An exception of type 'Microsoft.WindowsAzure.Storage.StorageException'
occurred in Microsoft.WindowsAzure.Storage.dll but was not handled in user code
Additional information: The remote server returned an error: (400) Bad Request.
这是代码:
foreach (var obj in objectsList)
{
var containerName = obj.id.Replace("\"", "").Replace("_", "").Trim();
CloudBlobContainer blobContainer = blobClient.GetContainerReference(containerName);
if (blobContainer.Exists())
{
var fileNamesArr = obj.fileNames.Split(new char[] { '#' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var sora in fileNamesArr)
{
int soraInt = int.Parse(sora.Replace("\"", ""));
String fileName = String.Format("{0}.mp3", soraInt.ToString("000"));
var url = String.Format("http://{0}/{1}/{2}", obj.hostName.Replace("\"", ""), obj.id.Replace("\"", ""), fileName.Replace("\"", "")).ToLower();
var tempFileName = "temp.mp3";
var downloadedFilePath = Path.Combine(Path.GetTempPath(), tempFileName).ToLower();
var webUtil = new WebUtils(url);
await webUtil.DownloadAsync(url, downloadedFilePath).ContinueWith(task =>
{
var blobRef = blobContainer.GetBlockBlobReference(fileName.ToLower());
blobRef.Properties.ContentType = GetMimeType(downloadedFilePath);
using (var fs = new FileStream(downloadedFilePath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
blobRef.UploadFromStream(fs); // <--- Exception
}
});
}
}
else
{
throw new Exception(obj.id.Replace("\"", "") + " Container not exist!");
}
}
编辑:存储异常
Microsoft.WindowsAzure.Storage.StorageException: The remote server returned an error: (400) Bad Request. ---> System.Net.WebException: The remote server returned an error: (400) Bad Request. at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context) at System.Net.HttpWebRequest.GetRequestStream() at Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand
1 cmd, IRetryPolicy policy, OperationContext operationContext) --- End of inner exception stack trace --- at Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand
1 cmd, IRetryPolicy policy, OperationContext operationContext) at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.UploadFromStreamHelper(Stream source, Nullable`1 length, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext) at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.UploadFromStream(Stream source, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext) at TelawatAzureUtility.StorageService.<>c__DisplayClass4.b__12(Task task) in \psf\Home\Documents\Visual Studio 14\Projects\Telawat Azure Utility\TelawatAzureUtility\StorageService.cs:line 128 Request Information RequestID: RequestDate:Sat, 28 Jun 2014 20:12:14 GMT StatusMessage:Bad Request
编辑2:请求信息:
编辑3:问题来自WebUtils..我用下面的代码替换它并且它有效!我会添加weUtils代码,也许你可以帮助了解它的问题所在。
HttpClient client = new HttpClient();
var stream = await client.GetStreamAsync(url);
WebUtils 代码:
public class WebUtils
{
private Lazy<IWebProxy> proxy;
public WebUtils(String url)
{
proxy = new Lazy<IWebProxy>(() => string.IsNullOrEmpty(url) ? null : new WebProxy {
Address = new Uri(url), UseDefaultCredentials = true });
}
public IWebProxy Proxy
{
get { return proxy.Value; }
}
public Task DownloadAsync(string requestUri, string filename)
{
if (requestUri == null)
throw new ArgumentNullException("requestUri is missing!");
return DownloadAsync(new Uri(requestUri), filename);
}
public async Task DownloadAsync(Uri requestUri, string filename)
{
if (filename == null)
throw new ArgumentNullException("filename is missing!");
if (Proxy != null)
{
WebRequest.DefaultWebProxy = Proxy;
}
using (var httpClient = new HttpClient())
{
using (var request = new HttpRequestMessage(HttpMethod.Get, requestUri))
{
using (Stream contentStream = await (await httpClient.SendAsync(request)).Content.ReadAsStreamAsync())
{
using (var stream = new FileStream(filename, FileMode.Create, FileAccess.Write))
{
contentStream.CopyTo(stream);
stream.Flush();
stream.Close();
}
contentStream.Close();
}
}
}
}
}
此外,当我尝试此代码时......“等待”将永远不会完成或完成!
webUtil.DownloadAsync(url, downloadedFilePath).Wait()
最佳答案
您是否尝试过在 Azure 门户上手动创建容器?它对您可以为容器指定的名称有一些限制。
例如:容器名称不能包含大写字母。
如果您请求一个名称无效的容器,将会导致您收到的 (400) Bad Request。因此,请检查您的“containerName”字符串。
关于c# - 无法上传到Azure Blob存储: The remote server returned an error: (400) Bad Request,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24470217/