ASP.NET Core：IConfigurationBuilder不包含AddAzureKeyVault的定义

Question

我正在将我的ASP.NET Core Web应用程序升级到.NET Core 2.1，但是出现以下错误：

IConfigurationBuilder不包含AddAzureKeyVault的定义

该代码在.NET Core 2.0中有效。看起来.NET Core 2.1中缺少库。

using System;
using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Azure.KeyVault;
using Microsoft.Azure.Services.AppAuthentication;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Configuration.AzureKeyVault;

namespace MyNamesace
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateWebHostBuilder(args).Build().Run();
        }

        public static IWebHostBuilder CreateWebHostBuilder(string[] args)
        {
            return WebHost.CreateDefaultBuilder(args)
                    .ConfigureAppConfiguration((ctx, builder) =>
                    {
                        var keyVaultEndpoint = GetKeyVaultEndpoint();
                        if (!string.IsNullOrEmpty(keyVaultEndpoint))
                        {
                            var azureServiceTokenProvider = new AzureServiceTokenProvider();
                            var keyVaultClient = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(azureServiceTokenProvider.KeyVaultTokenCallback));

                            builder.AddAzureKeyVault(keyVaultEndpoint, keyVaultClient, new DefaultKeyVaultSecretManager());
                        }
                    })
                    .UseStartup<Startup>();
        }

        static string GetKeyVaultEndpoint() => Environment.GetEnvironmentVariable("KeyVaultEndpoint");
    }
}

Answer 1

回答

安装Microsoft.Extensions.Configuration.AzureKeyVault NuGet程序包。

无需更改代码。

讲解

ASP.NET Core 2.0模板使用了Microsoft.AspNetCore.All NuGet程序包，其中包括IConfiguration的Azure Key Vault扩展，​​但是ASP.NET Core 2.1模板使用了Microsoft.AspNetCore.App，其中不包含扩展库。

码

using System;
using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Azure.KeyVault;
using Microsoft.Azure.Services.AppAuthentication;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Configuration.AzureKeyVault;

namespace MyNamespace
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateWebHostBuilder(args).Build().Run();
        }

        public static IWebHostBuilder CreateWebHostBuilder(string[] args)
        {
            return WebHost.CreateDefaultBuilder(args)
                    .ConfigureAppConfiguration((ctx, builder) =>
                    {
                        var keyVaultEndpoint = GetKeyVaultEndpoint();
                        if (!string.IsNullOrEmpty(keyVaultEndpoint))
                        {
                            var azureServiceTokenProvider = new AzureServiceTokenProvider();
                            var keyVaultClient = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(azureServiceTokenProvider.KeyVaultTokenCallback));

                            builder.AddAzureKeyVault(keyVaultEndpoint, keyVaultClient, new DefaultKeyVaultSecretManager());
                        }
                    })
                    .UseStartup<Startup>();
        }

        static string GetKeyVaultEndpoint() => Environment.GetEnvironmentVariable("KeyVaultEndpoint");
    }
}