azure 上傳blob到ams(CreateFromBlob)

遇到的錯誤：The destination storage credentials must contain the account key credentials，參數名: destinationStorageCredentials

解決方法：AccountName與AccountKey參數值錯誤

AccountName就是存儲賬戶名字

AccountKey值獲取方式：打開存儲賬戶-->訪問秘鑰-->key1或者key2

Azure上傳資產SDK

    public class AzureMediaServiceController : ApiController
    {
        // Read values from the App.config file.

        private static readonly string _AADTenantDomain =
            ConfigurationManager.AppSettings["AMSAADTenantDomain"];
        private static readonly string _RESTAPIEndpoint =
            ConfigurationManager.AppSettings["AMSRESTAPIEndpoint"];
        private static readonly string _AMSClientId =
            ConfigurationManager.AppSettings["AMSClientId"];
        private static readonly string _AMSClientSecret =
            ConfigurationManager.AppSettings["AMSClientSecret"];

        private static CloudMediaContext _context = null;

        [HttpPost, Route("api/AzureMediaService/DeliverVideo")]
        // GET: AMSDeliverVideo
        public string DeliverVideo(string fileName)
        {
            GetCloudMediaContext();
            IAsset inputAsset = UploadFile(fileName, AssetCreationOptions.None);
            var strsasUri = PublishAssetGetURLs(inputAsset);
            return strsasUri;
        }
        /// <summary>
        /// 獲取媒體文件上下文
        /// </summary>
        private void GetCloudMediaContext()
        {
            AzureAdTokenCredentials tokenCredentials =
                new AzureAdTokenCredentials(_AADTenantDomain,
                    new AzureAdClientSymmetricKey(_AMSClientId, _AMSClientSecret),
                    AzureEnvironments.AzureCloudEnvironment);

            var tokenProvider = new AzureAdTokenProvider(tokenCredentials);

            _context = new CloudMediaContext(new Uri(_RESTAPIEndpoint), tokenProvider);
        }

        /// <summary>
        /// 創建新資產並上傳視頻文件
        /// </summary>
        /// <param name="fileName">上傳文件名稱,如:F:\BigBuck.mp4</param>
        static public IAsset UploadFile(string fileName, AssetCreationOptions options)
        {
            IAsset inputAsset = _context.Assets.CreateFromFile(
                fileName,
                options,
                (af, p) =>
                {
                    Console.WriteLine("Uploading '{0}' - Progress: {1:0.##}%", af.Name, p.Progress);
                });
            return inputAsset;
        }
        static public string PublishAssetGetURLs(IAsset asset)
        {
            // Publish the output asset by creating an Origin locator for adaptive streaming,
            // and a SAS locator for progressive download.
            //用於流媒體（例如 MPEG DASH、HLS 或平滑流式處理）的 OnDemandOrigin 定位符
            //_context.Locators.Create(
            //    LocatorType.OnDemandOrigin,
            //    asset,
            //    AccessPermissions.Read,
            //    TimeSpan.FromDays(30));

            //用於下載媒體文件的訪問簽名
            _context.Locators.Create(
                LocatorType.Sas,
                asset,
                AccessPermissions.Read,
                TimeSpan.FromDays(30));


            IEnumerable<IAssetFile> mp4AssetFiles = asset
                    .AssetFiles
                    .ToList()
                    .Where(af => af.Name.EndsWith(".mp4", StringComparison.OrdinalIgnoreCase));


            // Get the URls for progressive download for each MP4 file that was generated as a result
            // of encoding.
            //List<Uri> mp4ProgressiveDownloadUris = mp4AssetFiles.Select(af => af.GetSasUri()).ToList();
            string mp4ProgressiveDownloadUris = mp4AssetFiles.Select(af => af.GetSasUri()).FirstOrDefault().OriginalString;

            return mp4ProgressiveDownloadUris;
            // Display the URLs for progressive download.   
            // mp4ProgressiveDownloadUris.ForEach(uri => Console.WriteLine(uri + "\n"));    

        }


        string storageConnectionString = ConfigurationManager.AppSettings["StorageConnectionString"];
        string accountName = ConfigurationManager.AppSettings["AccountName"];
        string accountKey = ConfigurationManager.AppSettings["AccountKey"];

        /// <summary>
        /// 上傳blob文件到ams中
        /// </summary>
        /// <param name="fileName">文件名</param>
        public string UploadBlobFile(string fileName)
        {
            if (string.IsNullOrEmpty(fileName))
                return string.Empty;
            CloudStorageAccount storageAccount = null;
            CloudBlobContainer cloudBlobContainer = null;
            if (CloudStorageAccount.TryParse(storageConnectionString, out storageAccount))
            {
                try
                {
                    // 創建CloudBlobClient，它代表存儲帳戶的Blob存儲端點。
                    CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();

                    //fileName = "https://qdlsstorage.blob.core.windows.net/video/20190514165259-魔術視頻.mp4";
                    //通過連接獲取容器名字和文件名字
                    var index = fileName.IndexOf(accountName, StringComparison.CurrentCultureIgnoreCase);
                    var temp = fileName.Substring(index + 1);
                    var fs = temp.Split('/');
                    var containerName = fs[1];
                    fileName = fs[2]; 這一段代碼根據你們自己的情況進行修改，我這個是因為傳遞的全路徑才這麼寫的

                    // 獲取Blob容器 
                    cloudBlobContainer = cloudBlobClient.GetContainerReference(containerName);
                    GetCloudMediaContext();
                    var storageCredentials = new StorageCredentials(accountName, accountKey);
                    var cloudBlockBlob = cloudBlobContainer.GetBlockBlobReference(fileName);

                    cloudBlockBlob.FetchAttributes();//這一句是關鍵，如果不加這一句就會報錯，我把報錯信息放到下麵
                    var inputAsset = _context.Assets.CreateFromBlob(cloudBlockBlob, storageCredentials, AssetCreationOptions.None);
                    var strsasUri = PublishAssetGetURLs(inputAsset);
                    return strsasUri;
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                }

            }

            return null;
        }
    }

報錯信息：

<?xml version="1.0" encoding="utf-8"?><m:error xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"><m:code /><m:message xml:lang="en-US">AssetFile ContentFileSize must not be negative</m:message></m:error>

參考地址：https://github.com/Azure/azure-sdk-for-media-services-extensions/issues/40  （這是通過谷歌找到的資料，百度根本不行）

直接上傳文件到資產中調用方法：

 　　　　　　　　　　　　　  var virtualPath = "/UploadFile/Files/";
                        var path = HttpContext.Current.Server.MapPath(virtualPath);
                        if (!Directory.Exists(path))
                        {
                            Directory.CreateDirectory(path);
                        }
                        var fileFullPath = $"{path}{fileName}";
                        try
                        {
                            file.SaveAs(fileFullPath);
                            var ams = new AzureMediaServiceController();
                            url = ams.DeliverVideo(fileFullPath);
                            result = true;
                            msg = $@"上傳視頻成功";
                            File.Delete(fileFullPath);
                        }
                        catch (Exception ex)
                        {
                            msg = "上傳文件寫入失敗：" + ex.InnerException + ex.Message + ex.InnerException?.InnerException + "fileFullPath=" + fileFullPath;
                        }

因為使用的是HTML自帶的file上傳控制項，傳遞給介面的文件地址全路徑是錯誤的，所以只能保存到介面伺服器本地，上傳到azure上去之後再刪除這個文件。

上傳blob到ams

　　　　　　　　　　　　　　 var ams = new AzureMediaServiceController();
                        var t = ams.UploadBlobFile(fileUrl);