azure 上传blob到ams(CreateFromBlob)

遇到的错误：the destination storage credentials must contain the account key credentials，参数名: destinationstoragecredentials

解决方法：accountname与accountkey参数值错误

accountname就是存储账户名字

accountkey值获取方式：打开存储账户-->访问秘钥-->key1或者key2

azure上传资产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>
        /// 获取媒体文件上下文
        /// </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>
        /// 创建新资产并上传视频文件
        /// </summary>
        /// <param name="filename">上传文件名称,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.
            //用于流媒体（例如 mpeg dash、hls 或平滑流式处理）的 ondemandorigin 定位符
            //_context.locators.create(
            //    locatortype.ondemandorigin,
            //    asset,
            //    accesspermissions.read,
            //    timespan.fromdays(30));

            //用于下载媒体文件的访问签名
            _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>
        /// 上传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
                {
                    // 创建cloudblobclient，它代表存储帐户的blob存储端点。
                    cloudblobclient cloudblobclient = storageaccount.createcloudblobclient();

                    //filename = "https://qdlsstorage.blob.core.windows.net/video/20190514165259-魔术视频.mp4";
                    //通过连接获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]; 这一段代码根据你们自己的情况进行修改，我这个是因为传递的全路径才这么写的

                    // 获取blob容器 
                    cloudblobcontainer = cloudblobclient.getcontainerreference(containername);
                    getcloudmediacontext();
                    var storagecredentials = new storagecredentials(accountname, accountkey);
                    var cloudblockblob = cloudblobcontainer.getblockblobreference(filename);

                    cloudblockblob.fetchattributes();//这一句是关键，如果不加这一句就会报错，我把报错信息放到下面
                    var inputasset = _context.assets.createfromblob(cloudblockblob, storagecredentials, assetcreationoptions.none);
                    var strsasuri = publishassetgeturls(inputasset);
                    return strsasuri;
                }
                catch (exception e)
                {
                    console.writeline(e);
                }

            }

            return null;
        }
    }

 

报错信息：

<?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>

参考地址：https://github.com/azure/azure-sdk-for-media-services-extensions/issues/40  （这是通过谷歌找到的资料，百度根本不行）

 

直接上传文件到资产中调用方法：

 　　　　　　　　　　　　　  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 = $@"上传视频成功";
                            file.delete(filefullpath);
                        }
                        catch (exception ex)
                        {
                            msg = "上传文件写入失败：" + ex.innerexception + ex.message + ex.innerexception?.innerexception + "filefullpath=" + filefullpath;
                        }

因为使用的是html自带的file上传控件，传递给接口的文件地址全路径是错误的，所以只能保存到接口服务器本地，上传到azure上去之后再删除这个文件。

 

上传blob到ams

　　　　　　　　　　　　　　 var ams = new azuremediaservicecontroller();
                        var t = ams.uploadblobfile(fileurl);