使用ASP .NET Core验证服务描述符时错误

Question

我正在尝试在帐户控制器中的注销操作方法中创建注销机制。为此，我需要停用我的JWT令牌。我遵循本教程停用JWT令牌。在我的项目中应用此代码后，我的项目在运行该项目时显示错误。

我的代码如下。

startup.cs

      public void ConfigureServices(IServiceCollection services)
        {
            // New
            services.AddTransient<TokenManagerMiddleware>();
            services.AddTransient<ITokenManager, TokenManager>();
            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

            var authPol = new AuthorizationPolicyBuilder()
                                         .AddAuthenticationSchemes(
                                                         new string[] { 
           JwtBearerDefaults.AuthenticationScheme })
                                         .RequireAuthenticatedUser()
                                         .Build();
                      
            services.AddControllers(
            config => 
            {
                config.Filters.Add(new AuthorizeFilter(authPol));
            }).AddXmlSerializerFormatters()
            .AddXmlDataContractSerializerFormatters();

        services.AddDbContext<BikeStoresContext>();

        // JWT Token code is there below this...
        }


      public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "BikeStoreAPI v1"));
            }

            app.UseMiddleware<TokenManagerMiddleware>();

            app.UseDeveloperExceptionPage();

            app.UseHttpsRedirection();

            app.UseRouting();


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

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }

tokenmanagermiddleware.cs

public class TokenManagerMiddleware : IMiddleware
{
    private readonly ITokenManager _tokenManager;

    public TokenManagerMiddleware(ITokenManager tokenManager)
    {
        _tokenManager = tokenManager;
    }

    public async Task InvokeAsync(HttpContext context, RequestDelegate next)
    {
        if (await _tokenManager.IsCurrentActiveToken())
        {
            await next(context);
            return;
        }
        context.Response.StatusCode = (int)HttpStatusCode.Unauthorized;
    }
    
}

itokenmanager.cs

public interface ITokenManager
{
    Task<bool> IsCurrentActiveToken();

    Task DeactivateCurrentAsync();

    Task<bool> IsActiveAsync(string token);

    Task DeactivateAsync(string token);

    Task SetToken(string token);
}

tokenmanager.cs

public class TokenManager : ITokenManager
{
    private readonly IDistributedCache _cache;


    private readonly IHttpContextAccessor _httpContextAccessor;

    public TokenManager(IDistributedCache cache, IHttpContextAccessor httpContextAccessor)
    {
        _cache = cache;
        _httpContextAccessor = httpContextAccessor;
    }

    public async Task SetToken(string token)
    {
        await _cache.SetStringAsync(token, token);
    }

    public async Task<bool> IsCurrentActiveToken()
     => await IsActiveAsync(GetCurrentAsync());

    public async Task DeactivateCurrentAsync()
        => await DeactivateAsync(GetCurrentAsync());


    public async Task<bool> IsActiveAsync(string token)
        => await _cache.GetStringAsync(GetKey(token)) == null;

    public async Task DeactivateAsync(string token)
        => await _cache.SetStringAsync(GetKey(token),
            " ", new DistributedCacheEntryOptions
            {
                AbsoluteExpirationRelativeToNow =
                    TimeSpan.FromMinutes(720)
            });

    private string GetCurrentAsync()
    {
        var authorizationHeader = _httpContextAccessor
            .HttpContext.Request.Headers["authorization"];

        return authorizationHeader == StringValues.Empty
            ? string.Empty
            : authorizationHeader.Single().Split(" ").Last();
    }

    private static string GetKey(string token)
    => $"tokens:{token}:deactivated";

}

accountscontroller.cs

UserManager<IdentityUser> userManager;
SignInManager<IdentityUser> signInManager;
RoleManager<IdentityRole> roleManager;

private readonly ITokenManager tokenManager;

public AccountsController(UserManager<IdentityUser> _userManager, SignInManager<IdentityUser> _signInManager, 
    RoleManager<IdentityRole> _roleManager, ITokenManager _tokenManager)
{
    userManager = _userManager;
    signInManager = _signInManager;
    roleManager = _roleManager;

    tokenManager = _tokenManager;
}

[HttpPost("logout")]
public async Task<IActionResult> Logout()
{
    await tokenManager.DeactivateCurrentAsync();
    return NoContent();
}

当我尝试运行该项目时，我会遇到此错误：

system.AggregateException hresult = 0x80131500消息=某些服务 无法构造（验证服务时出错 描述符的服务类型： bikestoreapi.middleware.tokenmanagermiddleware生命周期：瞬态 bikestoreapi.middleware.tokenmanagermiddleware'： 无法解析类型的服务 'Microsoft.extensions.caching.distributed.IdistributedCache' 试图激活 'Bikestoreapi.Services.TokenManagerService.TokenManager'）（错误 同时验证服务描述符的服务类型： Bikestoreapi.Services.TokenManagerService.ItokenManager Lifetime： 瞬态实现类型： Bikestoreapi.Services.TokenManagerService.TokenManager'：无法 解决类型的服务 'Microsoft.extensions.caching.distributed.IdistributedCache' 试图激活 'Bikestoreapi.Services.TokenManagerService.TokenManager'。）
source = microsoft.extensions.ipendentencyindoction stacktrace：at Microsoft.Extensions.DependencyInjection.ServiceProvider..ctor(IEnumerable1 serviceDescriptors, IServiceProviderEngine engine, ServiceProviderOptions options) at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection services, ServiceProviderOptions options) at Microsoft.extensions.dependentiondoction.defaultserviceProviderFactory.CreateserviceProvider（iserviceCollection ContarerBuilder）at microsoft.extensions.hosting.hosting.internal.servicefactoryadapter 1.CreateserviceProvider（CreateserviceProvider） 集装箱） microsoft.extensions.hosting.hostbuilder.createserviceprovider（）at microsoft.extensions.hosting.hostbuilder.build（）at bikestoreapi.program.main（string [] args）in C：\ users \ abhishek \ source \ repos \ bikestore \ bikestoreapi \ program.cs：line 16

这个例外最初是在此通话堆栈中抛出的： [外部代码]

内部异常1：InvalidOperationException：验证时错误 服务描述符的ServiceType： bikestoreapi.middleware.tokenmanagermiddleware生命周期：瞬态 bikestoreapi.middleware.tokenmanagermiddleware'： 无法解析类型的服务 'Microsoft.extensions.caching.distributed.IdistributedCache' 试图激活 'Bikestoreapi.Services.TokenManagerService.TokenManager'。

内部异常2：InvalidOperationException：无法解析 类型的服务 'Microsoft.extensions.caching.distributed.IdistributedCache' 试图激活 'Bikestoreapi.Services.TokenManagerService.TokenManager'。

我经历了多次的每个步骤和编码，但我不知道出了什么问题。你能帮我吗

编辑 我在startup.cs中添加了下面的给定代码，但是当调用登录API生成JWT令牌时，遇到此错误。

  services.AddDistributedRedisCache(r => { r.Configuration = Configuration["redis:connectionString"]; });

Answer 1

仔细阅读异常消息。

在尝试激活'bikestoreapi.services.tokenmanagerservice.tokenmanager

时，无法解决'microsoft.extensions.caching.distributed.idistributedCache'类型的服务。

。代码> TokenManager 尝试获得服务。

您需要为 iDistributedCache 取决于分布式缓存提供商您想使用的。

public void ConfigureServices(IServiceCollection services)
{
    services.AddTransient<TokenManagerMiddleware>();
    services.AddTransient<ITokenManager, TokenManager>();
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

    // Register IDistributedCache service
    services.AddDistributedRedisCache(r => { r.Configuration = Configuration["redis:connectionString"]; 

    ...

}