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创建预配客户端时，我从 Azure IoT 预配服务收到此错误。

System.ArgumentException: 'Should specify SharedAccessKeyName'

我从 Portal 复制了连接字符串，有什么问题吗？

using System;
using System.IO;
using System.Reflection;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
using Microsoft.Azure.Devices.Provisioning.Service;

namespace EnrollmentApp
{
    class Program
    {
        private static string ProvisioningConnectionString = "HostName=happybeerhub-us.azure-devices.net;DeviceId=test-device-01;SharedAccessKey=tawpddfqUt3EHZg9a5tUzQ5fjros7zMhKsZbmuXzwXE=";
        private static string EnrollmentGroupId = "test";
        private static string X509RootCertPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"key.pfx");        

        static void Main(string[] args)
        {
            RunSample().GetAwaiter().GetResult();
            Console.WriteLine("\nHit <Enter> to exit ...");
            Console.ReadLine();
        }

        public static async Task RunSample()
        {
            Console.WriteLine("Starting sample...");

            using (ProvisioningServiceClient provisioningServiceClient =
                    ProvisioningServiceClient.CreateFromConnectionString(ProvisioningConnectionString))
            {
                #region Create a new enrollmentGroup config
                Console.WriteLine("\nCreating a new enrollmentGroup...");
                var certificate = new X509Certificate2(X509RootCertPath);
                Attestation attestation = X509Attestation.CreateFromRootCertificates(certificate);
                EnrollmentGroup enrollmentGroup =
                        new EnrollmentGroup(
                                EnrollmentGroupId,
                                attestation)
                        {
                            ProvisioningStatus = ProvisioningStatus.Enabled
                        };
                Console.WriteLine(enrollmentGroup);
                #endregion

                #region Create the enrollmentGroup
                Console.WriteLine("\nAdding new enrollmentGroup...");
                EnrollmentGroup enrollmentGroupResult =
                    await provisioningServiceClient.CreateOrUpdateEnrollmentGroupAsync(enrollmentGroup).ConfigureAwait(false);
                Console.WriteLine("\nEnrollmentGroup created with success.");
                Console.WriteLine(enrollmentGroupResult);
                #endregion

            }
        }
    }
}
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1 回答 1

1

那么你错过了，SharedAccessKeyName所以验证会尝试检查它，因为在你的情况下它是空的，你会得到异常。

正如您在ServiceConnectionStringBuilder.cs中看到的，正确的连接字符串格式是

/// A valid connection string shall be in the following format:
/// <code>
/// HostName=[ServiceName];SharedAccessKeyName=[keyName];SharedAccessKey=[Key]
/// </code>

同样在第 128 行，您可以看到引发异常的检查：

        if (string.IsNullOrWhiteSpace(SharedAccessKeyName))
        {
            throw new ArgumentException("Should specify SharedAccessKeyName");
        }

现在您可能认为您的代码没有使用 ServiceConnectionStringBuilder.cs，但调用ProvisioningServiceClient.CreateFromConnectionString会创建一个新的 ProvisioningServiceClient 实例，该实例又会调用ServiceConnectionStringBuilder.Parse(). 有关更多信息，请参阅第 82、113 和 123 行中的ProvisioningServiceClient.cs。

解决方案：

要解决此问题，您必须提供 SharedAccessKeyName。您还应该考虑为此使用IotHubConnectionStringBuilder，它在构建连接字符串时已经检查了您的属性。

提问者根据此博客文章here指出关键名称是deviceId 。因此，解决方案是使用SharedAccessKeyname=xx而不是DeviceId=xx.

于 2019-07-12T07:26:07.143 回答