c# - 使用 C# 中的 PUT 请求将内容写入 Azure 存储上的文件

Question

我正在尝试向 Azure 存储文件发出放置请求，我想在其中添加一些简单的内容。我更改了 URL 并在 URL 末尾添加了 ?comp=range 但我收到 403 错误响应。我在 .net 中创建了一个基本的控制台应用程序。

我的标题是:

 const string requestMethod = "PUT";
            string urlPath = strShareName + "/" + "rahila.csv?comp=range";//+ "?comp=range  HTTP/1.1";
            String canonicalizedResource = String.Format("/{0}/{1}/{2}", StorageAccountName, strShareName, strFileName);
            try
            {
                //GetWebRequest(requestMethod, urlPath, canonicalizedResource, "CreateFile");
                HttpWebRequest request = null;
                try
                {
                    const string type = "file";
                    string MethodType = "CreateFile";
                    const string msVersion = "2015-04-05";
                    String dateInRfc1123Format = DateTime.UtcNow.ToString("R", CultureInfo.InvariantCulture);
                    String canonicalizedHeaders = "";
                    string data = "rahila sted";
                    canonicalizedHeaders = String.Format("x-ms-date:{0}\nx-ms-version:{1}", dateInRfc1123Format, msVersion);
                    if (MethodType == "CreateFile")
                    {
                        canonicalizedHeaders = String.Format("x-ms-content-length:65536\nx-ms-date:{0}\nx-ms-type:file\nx-ms-version:{1}", dateInRfc1123Format, msVersion);
                    }

                    String stringToSign = "";


                    stringToSign = String.Format("{0}\n\n\n\n\n\n\n\n\n\n\n\n{1}\n{2}", requestMethod, canonicalizedHeaders, canonicalizedResource);

                    if (String.IsNullOrEmpty(stringToSign))
                    {
                        throw new ArgumentNullException("canonicalizedString");
                    }

                    String signature;

                    if (String.IsNullOrEmpty(stringToSign))
                    {
                        throw new ArgumentNullException("unsignedString");
                    }

                    if (Convert.FromBase64String(StorageKey) == null)
                    {
                        throw new ArgumentNullException("key");
                    }

                    Byte[] dataToHmac = System.Text.Encoding.UTF8.GetBytes(stringToSign);
                    using (HMACSHA256 hmacSha256 = new HMACSHA256(Convert.FromBase64String(StorageKey)))
                    {
                        signature = Convert.ToBase64String(hmacSha256.ComputeHash(dataToHmac));
                    }


                    String authorizationHeader = String.Format(CultureInfo.InvariantCulture, "{0} {1}:{2}",
                                                               StorageScheme,
                                                               StorageAccountName, signature);
Uri uri = new Uri(FileEndPoint + urlPath);
request = (HttpWebRequest)WebRequest.Create(uri);
if (requestMethod != "Get")
{
    request.ContentLength = data.Length;
}
// string data = "Hello testing";
//int a= ((data.Length) + 1);

request.Method = "PUT";//requestMethod;
request.Headers.Add("x-ms-write", "update");
request.Headers.Add("x-ms-date", dateInRfc1123Format);
request.Headers.Add("x-ms-version", msVersion);
request.Headers.Add("x-ms-range", "bytes=0-65535"); // + ((data.Length) - 1));
request.Headers.Add("Authorization", authorizationHeader);

我得到异常的行是粗体格式的。

HttpWebResponse response = null;
response = (HttpWebResponse)request.GetResponse();
string returnString = response.StatusCode.ToString();

任何人都可以帮助我解决此问题，或者只是指导我如何在不使用 azure 客户端 API 的情况下将内容写入 azure 存储上的简单文件。

Answer 1

12/19 更新:

当使用Put Range时要将内容上传到azure文件，您可以按照以下代码操作(我假设您已经在azure文件共享上创建了一个文件，并且它的内容长度大于正在上传的内容):

        static void UploadText()
        {
            string Account = "xxxx";
            string Key = "xxxx";
            string FileShare = "test1";
            string FileName = "11.txt";
            string apiversion = "2019-02-02";

            //the string to be uploaded to azure file, note that the length of the uploaded string should less than the azure file length
            string upload_text = "bbbbbbbbbbbbbbbbbbbbbbbb.";
            Console.WriteLine("the string length: " + upload_text.Length);
            DateTime dt = DateTime.UtcNow;
            string StringToSign = String.Format("PUT\n"
                + "\n" // content encoding
                + "\n" // content language
                + upload_text.Length + "\n" // content length
                + "\n" // content md5
                + "\n" // content type
                + "\n" // date
                + "\n" // if modified since
                + "\n" // if match
                + "\n" // if none match
                + "\n" // if unmodified since
                + "\n"//+ "bytes=0-" + (upload_text.Length - 1) + "\n" // range
                +"x-ms-date:" + dt.ToString("R") + "\nx-ms-range:bytes=0-"+(upload_text.Length-1) + "\nx-ms-version:" + apiversion + "\nx-ms-write:update\n" // headers
                + "/{0}/{1}/{2}\ncomp:range", Account, FileShare, FileName);

            string auth = SignThis(StringToSign, Key, Account);
            string method = "PUT";
            string urlPath = string.Format("https://{0}.file.core.windows.net/{1}/{2}?comp=range", Account, FileShare,FileName);
            Uri uri = new Uri(urlPath);
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
            request.Method = method;
            request.ContentLength = upload_text.Length;

            request.Headers.Add("x-ms-range", "bytes=0-"+(upload_text.Length-1));
            request.Headers.Add("x-ms-write", "update");
            request.Headers.Add("x-ms-date", dt.ToString("R"));
            request.Headers.Add("x-ms-version", apiversion);
            request.Headers.Add("Authorization", auth);
            //request.Headers.Add("Content-Length", upload_text.Length.ToString());

            var bytes = System.Text.Encoding.ASCII.GetBytes(upload_text);

            using (var requestStream = request.GetRequestStream())
            {
                requestStream.Write(bytes, 0, bytes.Length);
            }


            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
            {
                //read the content
                Console.WriteLine("the response is:" + response.StatusCode);
            }
        }



        private static String SignThis(String StringToSign, string Key, string Account)
        {
            String signature = string.Empty;
            byte[] unicodeKey = Convert.FromBase64String(Key);
            using (HMACSHA256 hmacSha256 = new HMACSHA256(unicodeKey))
            {
                Byte[] dataToHmac = System.Text.Encoding.UTF8.GetBytes(StringToSign);
                signature = Convert.ToBase64String(hmacSha256.ComputeHash(dataToHmac));
            }

            String authorizationHeader = String.Format(
                  CultureInfo.InvariantCulture,
                  "{0} {1}:{2}",
                  "SharedKey",
                  Account,
                  signature);

            return authorizationHeader;
        }

然后在Main()方法中，您可以调用UploadText()方法，它在我这边工作。

<小时/>

旧:

guide me how to write content to a simple file on azure storage without using the azure client API.

为此，您可以直接使用 Azure 文件存储 SDK Microsoft.Azure.Storage.File, version 11.1.1 。而且我们始终建议使用 SDK 而不是使用 Rest api，因为 SDK 很容易使用。

这是使用此 SDK 的示例。

首先，在Visual Studio中创建.NET Framework的控制台项目。然后安装这个nuget包Microsoft.Azure.Storage.File, version 11.1.1 .

代码:

using Microsoft.Azure.Storage;
using Microsoft.Azure.Storage.Auth;
using Microsoft.Azure.Storage.File;
using System;

namespace AzureFileTest2
{
    class Program
    {
        static void Main(string[] args)
        {
            string accountName = "xxx";
            string accountKey = "xxx";
            CloudStorageAccount storageAccount = new CloudStorageAccount(new StorageCredentials(accountName, accountKey), true);

            CloudFileClient cloudFileClient = storageAccount.CreateCloudFileClient();

            //make sure the file share named test1 exists.
            CloudFileShare fileShare = cloudFileClient.GetShareReference("test1");
            CloudFileDirectory fileDirectory = fileShare.GetRootDirectoryReference();
            CloudFile myfile = fileDirectory.GetFileReference("test123.txt");

            if (!myfile.Exists())
            {
                //if the file does not exists, then create the file and set the file max size to 100kb.
                myfile.Create(100 * 1024 * 1024);                
            }

            //upload text to the file
            //Besides using UploadText() method to directly upload text, you can also use UploadFromFile() / UploadFromByteArray() / UploadFromStream() methods as per your need.
            myfile.UploadText("hello, it is using azure storage SDK");

            Console.WriteLine("**completed**");
            Console.ReadLine();
        }
    }
}