IApplicationBuilder 不包含 UseAzureAppConfiguration 的定义

Question

我一直在尝试在我的Blazor应用程序中实现功能管理，但由于某种原因，我的程序拒绝接受“UseAzureAppConfiguration”，即使我应该有正确的使用和包。

这是我的 Startup.cs：

using Microsoft.AspNetCore.Authentication.OpenIdConnect;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Identity.Web;
using Microsoft.Identity.Web.UI;
using Microsoft.FeatureManagement;

namespace OreNoAppu
{
    public class Startup
    {
        public IConfiguration Configuration { get; }

        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
                .AddMicrosoftIdentityWebApp(Configuration.GetSection("AzureAd"));
            services.AddControllersWithViews().AddMicrosoftIdentityUI();

            // By default, all incoming requests will be authorized according to the default policy
            services.AddAuthorization(options => options.FallbackPolicy = options.DefaultPolicy);

            services.AddRazorPages();
            services.AddServerSideBlazor().AddMicrosoftIdentityConsentHandler();
            services.AddFeatureManagement();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                // The default HSTS value is 30 days.You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseRouting();
            app.UseAzureAppConfiguration();     // "Does not contain definition" error.

            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
                endpoints.MapBlazorHub();
                endpoints.MapFallbackToPage("/_Host");
            });
        }
    }
}

这些是我的要点：

  <ItemGroup>
    <PackageReference Include="Azure.Identity" Version="1.4.1" />
    <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.2.0" />
    <PackageReference Include="BlazorPro.Spinkit" Version="1.2.0" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="5.0.4" NoWarn="NU1605" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="5.0.4" NoWarn="NU1605" />
    <PackageReference Include="Microsoft.Extensions.Configuration.AzureAppConfiguration" Version="4.5.0" />
    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="2.4.0" />
    <PackageReference Include="Microsoft.Identity.Web" Version="1.1.0" />
    <PackageReference Include="Microsoft.Identity.Web.UI" Version="1.1.0" />
  </ItemGroup>

有人知道为什么找不到该方法吗？

Answer 1

Azure 应用程序配置有助于管理应用程序设置并集中控制其访问。它\xe2\x80\x99s 构建在键值对的简单概念之上，并且该服务提供可管理性、可用性和易用性。

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要解决您面临的问题，请检查您是否使用了正确的库，并检查您是否拥有 Microsoft 提供的以下 NuGet 包来使用 Azure 应用程序配置资源以及​​在项目中使用功能标志的能力。

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Microsoft.Azure.AppConfiguration.AspNetCore \n Microsoft.Extensions.Configuration.AzureAppConfiguration \n Microsoft.FeatureManagement

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由于您已通过Startup.cs中的 using 语句添加了FeatureManagement ，并且在ConfigureServices (...) 内部添加了使用它的功能。检查是否已修改 Program.cs并将默认主机生成器的创建替换为使用 Azure 应用程序配置的生成器，如下所示。

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public  static  IHostBuilder CreateHostBuilder(string[] args) =>\n  Host.CreateDefaultBuilder(args)\n    .ConfigureWebHostDefaults(webBuilder =>\n     webBuilder.ConfigureAppConfiguration((hostingContext, config) =>\n     {\n        var  settings = config.Build(); \n        config.AddAzureAppConfiguration(options => { \n            options.Connect(Environment.GetEnvironmentVariable("ConnectionString")) \n                    .ConfigureRefresh(refresh => { \n                            refresh.Register("Settings:Sentinel", refreshAll: true).SetCacheExpiration(new  TimeSpan(0, 1, 0)); \n                         }) \n                    .UseFeatureFlags(); \n        }); \n      }) \n      .UseStartup<Startup>());\n

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检查.Net 5 文档中的如何将 Azure 应用程序配置和功能标志添加到 Blazor 中，以获取详细的分步说明和示例。

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有关更多信息，请参阅以下文档：

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• 在 ASP.NET Core 应用程序中使用动态配置
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• 将 Azure 功能标志添加到 ASP.NET Razor Pages 应用程序
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