c# - .NET Core 2.0 访问用户 secret

Question

我正在尝试设置一个 .net core 2.0 网络应用程序以在用户注册时发送电子邮件并恢复密码。我遵循了本教程:https://learn.microsoft.com/en-us/aspnet/core/security/app-secrets?tabs=visual-studio .

但是，阅读评论部分后，该教程似乎并未针对 Core 2.0 进行更新。我的问题是，当我进入“将用户 secret 配置源添加到启动方法”部分时，我不知道启动文件应该是什么样子，因为我的启动文件与显示的不同那里。任何人都可以通过向我展示启动文件的外观来帮助我吗？谢谢。

这是我当前的启动文件:

public class Startup
{
    string _testSecret = null;

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

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        _testSecret = Configuration["MySecret"];
        services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

        services.AddIdentity<ApplicationUser, IdentityRole>(config =>
        {
            config.SignIn.RequireConfirmedEmail = true;
        })
        .AddEntityFrameworkStores<ApplicationDbContext>()
        .AddDefaultTokenProviders();

        // Add application services.
        services.AddTransient<IEmailSender, EmailSender>();

        services.AddMvc();
        services.Configure<AuthMessageSenderOptions>(Configuration);
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        var builder = new ConfigurationBuilder();

        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
            app.UseBrowserLink();
            app.UseDatabaseErrorPage();
            builder.AddUserSecrets<Startup>();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }

        app.UseStaticFiles();

        app.UseAuthentication();

        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Home}/{action=Index}/{id?}");
        });
    }
}

Answer 1

在您的代码中，我没有发现调用 ConfigurationBuilder 类的 build() 函数。这是示例代码。

var builder = new ConfigurationBuilder();
builder.AddUserSecrets<Startup>();
var config builder.Build(); //This line is missing from your code
string mySecret = config ['EmailAccount'];

引用:https://learn.microsoft.com/en-us/aspnet/core/security/app-secrets?view=aspnetcore-2.1&tabs=windows#access-a-secret