Question

我一直在尝试使用JWT承载身份验证来开发简单的Web API。到目前为止，我已经完全开发了一个应用程序，现在我需要一个Web API来提供与其他技术的通信。

要开始我的API，我在这里找到了本教程，其中提供了一个简单示例： https://medium.com/@renato.groffe/asp-net-core-2-0-autentica%C3%A7%C3%A3o-em-apis-utilizando-jwt-json-web-tokens-4b1871efd

代码在这里可用： https://github.com/renatogroffe/ASPNETCore2_JWT/tree/master/APIAlturas

我能够测试该项目，它与JWT承载身份验证可以正常工作。

当我不得不在控制器中进行一些依赖注入以从存储库中检索数据时，问题就开始了。我的API无法解决我的依赖关系，因此必须在Startup.cs文件中进行一些更改。

因此，在我的项目中，与上面的示例现在唯一不同的是Startup.cs文件。

这里发生的是我的API生成了令牌，当我尝试将其发送到我的其他控制器（在标头中）时，它返回：“ Bearer error =” invalid_token“，error_description =”签名是无效”

我的猜测是我的Startup.cs文件中的某些内容使我的身份验证混乱。

这是我注意到的另一件事，我在appsettings.json文件中设置了令牌配置。当我调用生成令牌的方法时，这些参数未在我的tokenConfigurations对象中设置。但是，调试代码后，我的startup.cs文件接收了参数。当我调用控制器时，这些参数现在在此对象中为空。

    public object Post([FromBody]User usuario,[FromServices]SigningConfigurations signingConfigurations, [FromServices]TokenConfigurations tokenConfigurations){     ... my code        

}

这是我的startup.cs文件

using System;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Stratec.WebAPI;
using Stratec.Configuration;
using Stratec.Domain;
using Autofac;
using Hangfire;
using Microsoft.AspNetCore.Http;
using Stratec.Web;
using Hangfire.SqlServer;

namespace Stratec.WebAPI
{
    public class Startup
    {
        public IConfiguration Configuration { get; }

        public Startup(IHostingEnvironment env)
        {
            Configuration = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
                // .AddXmlFile("appsettings.xml", optional: true, reloadOnChange: true)
                //.AddXmlFile($"appsettings.{env.EnvironmentName}.xml", optional: true)
                .AddEnvironmentVariables()
                .Build();

            Configuracao.Configuration = Configuration;
        }

        public IServiceProvider ConfigureServices(IServiceCollection services)
        {
            services.AddTransient<UsersDAO>();

            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

            var signingConfigurations = new SigningConfigurations();
            services.AddSingleton(signingConfigurations);

            var tokenConfigurations = new TokenConfigurations();
            new ConfigureFromConfigurationOptions<TokenConfigurations>(
                Configuration.GetSection("TokenConfigurations"))
                    .Configure(tokenConfigurations);
            services.AddSingleton(tokenConfigurations);

            services.AddAuthentication(authOptions =>
            {
                authOptions.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                authOptions.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
            }).AddJwtBearer(bearerOptions =>
            {
                var paramsValidation = bearerOptions.TokenValidationParameters;
                paramsValidation.IssuerSigningKey = signingConfigurations.Key;
                paramsValidation.ValidAudience = tokenConfigurations.Audience;
                paramsValidation.ValidIssuer = tokenConfigurations.Issuer;

                // Valida a assinatura de um token recebido
                paramsValidation.ValidateIssuerSigningKey = true;

                // Verifica se um token recebido ainda é válido
                paramsValidation.ValidateLifetime = true;

                // Tempo de tolerância para a expiração de um token (utilizado
                // caso haja problemas de sincronismo de horário entre diferentes
                // computadores envolvidos no processo de comunicação)
                paramsValidation.ClockSkew = TimeSpan.Zero;
            });

            // Ativa o uso do token como forma de autorizar o acesso
            // a recursos deste projeto
            services.AddAuthorization(auth =>
            {
                auth.AddPolicy("Bearer", new AuthorizationPolicyBuilder()
                    .AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme)
                    .RequireAuthenticatedUser().Build());
            });

            services.AddHangfire(x => x.UseSqlServerStorage(Configuration.GetConnectionString("ConexaoPadrao")));
            JobStorage.Current = new SqlServerStorage(Configuration.GetConnectionString("ConexaoPadrao"));
            // services.AddMvcCore();
            services.AddMvc();

            var assemblies = new[]
            {
                typeof(Startup).Assembly,
                typeof(Colaborador).Assembly
            };

            //IContainer container = null;

            var serviceProvider = ConfigurationApplication.Inicialize(services, Configuration, assemblies);

            //GlobalConfiguration.Configuration.UseAutofacActivator(container);

            return serviceProvider;
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseMiddleware<UnitOfWorkMiddleware>();
            app.UseMiddleware<AutenticacaoMiddleware<Autenticacao>>();

            app.UseMvc();            

            app.UseStaticFiles();
        }
    }
}

有人可以帮我吗？我一直在尝试在这里的问题中找到一些东西，但是找不到类似的问题。

Answer 1

我刚刚测试了tutorial you mentioned above中的代码。当我向登录操作发布请求时：

POST http://localhost:56435/api/login HTTP/1.1
Content-Type : application/json

{userId:"usuario01",accessKey:"94be650011cf412ca906fc335f615cdc"}

响应将是：

HTTP/1.1 200 OK
Transfer-Encoding: chunked
Content-Type: application/json; charset=utf-8
Server: Kestrel
X-SourceFiles: =?UTF-8?B?QzpcVXNlcnNcc3RyZWFteHVcRG93bmxvYWRzXEFTUE5FVENvcmUyX0pXVC1tYXN0ZXJcQVNQTkVUQ29yZTJfSldULW1hc3RlclxBUElBbHR1cmFzXEFQSUFsdHVyYXNcYXBpXGxvZ2lu?=
X-Powered-By: ASP.NET
Date: Thu, 30 Aug 2018 01:12:10 GMT

{
  "authenticated": true,
  "created": "2018-08-30 09:12:10",
  "expiration": "2018-08-30 09:13:10",
  "accessToken": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1bmlxdWVfbmFtZSI6WyJ1c3VhcmlvMDEiLCJ1c3VhcmlvMDEiXSwianRpIjoiZTk0ZDU3NTMwZTczNDMzMTlkYjVlN2EwMDY2YjQwOTUiLCJuYmYiOjE1MzU1OTE1MzAsImV4cCI6MTUzNTU5MTU5MCwiaWF0IjoxNTM1NTkxNTMwLCJpc3MiOiJFeGVtcGxvSXNzdWVyIiwiYXVkIjoiRXhlbXBsb0F1ZGllbmNlIn0.WR3V9kkI_Pyhpw-TnpbTsByB4JZa61PFymUGdm-3_CGInbOOH6RxbMchCdbojyflSZBf3d8O7RYiz2xiMoonkOcJc6gtO0ODCv-cUDPJYApwJVYOq1HEqSs0STvKdSjRZF6j0DM4WON6fpoVwKAq0rwng1aEf9bQue6Pl-fwbzbaCxhCrQtDyDYKyfO0tg-VMGQfMyV29Ab0s4W2L5bcB0w0jAgfFianAD2DKSDSVsDSiBTd7b-Np9OcEtBvXCkXMFEqGzkOIKGAR5kzTiOWPo_Dh9qOVlsooRtFbhOjxWqeYRR76fZ-OOt9Sg6eG5zu1T7lPNywKFeAznS2rss1ig",
  "message": "OK"
}

请注意，这里的expiration表示访问令牌将在1分钟后过期。如果我在61秒后发送带有这些令牌的请求：

GET http://localhost:56435/api/ConversorAlturas/PesMetros/1.13 HTTP/1.1
Authorization : Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1bmlxdWVfbmFtZSI6WyJ1c3VhcmlvMDEiLCJ1c3VhcmlvMDEiXSwianRpIjoiZTk0ZDU3NTMwZTczNDMzMTlkYjVlN2EwMDY2YjQwOTUiLCJuYmYiOjE1MzU1OTE1MzAsImV4cCI6MTUzNTU5MTU5MCwiaWF0IjoxNTM1NTkxNTMwLCJpc3MiOiJFeGVtcGxvSXNzdWVyIiwiYXVkIjoiRXhlbXBsb0F1ZGllbmNlIn0.WR3V9kkI_Pyhpw-TnpbTsByB4JZa61PFymUGdm-3_CGInbOOH6RxbMchCdbojyflSZBf3d8O7RYiz2xiMoonkOcJc6gtO0ODCv-cUDPJYApwJVYOq1HEqSs0STvKdSjRZF6j0DM4WON6fpoVwKAq0rwng1aEf9bQue6Pl-fwbzbaCxhCrQtDyDYKyfO0tg-VMGQfMyV29Ab0s4W2L5bcB0w0jAgfFianAD2DKSDSVsDSiBTd7b-Np9OcEtBvXCkXMFEqGzkOIKGAR5kzTiOWPo_Dh9qOVlsooRtFbhOjxWqeYRR76fZ-OOt9Sg6eG5zu1T7lPNywKFeAznS2rss1ig

响应将是：

HTTP/1.1 401 Unauthorized
Server: Kestrel
WWW-Authenticate: Bearer error="invalid_token", error_description="The token is expired"
X-SourceFiles: =?UTF-8?B?QzpcVXNlcnNcc3RyZWFteHVcRG93bmxvYWRzXEFTUE5FVENvcmUyX0pXVC1tYXN0ZXJcQVNQTkVUQ29yZTJfSldULW1hc3RlclxBUElBbHR1cmFzXEFQSUFsdHVyYXNcYXBpXENvbnZlcnNvckFsdHVyYXNcUGVzTWV0cm9zXDEuMTM=?=
X-Powered-By: ASP.NET
Date: Thu, 30 Aug 2018 01:17:02 GMT
Content-Length: 0

请注意，错误消息为"invalid_token", error_description="The token is expired"

我不确定您的到期时间是否设置为1分钟。但是，最好先检查一下。如果没有帮助，请转到步骤2。

由于上面的代码中信息不足，建议您检查以下列表：

a）。遭受invalid_token时，发送给控制器的承载是什么？

b）。您的Configuracao是什么？ Configuracao.Configuration = Configuration;的陈述使我感到困惑。您能告诉我们Configuracao吗？

b）。我注意到您和本教程都使用了自定义的身份验证/授权方式，而不是标准的UseAuthentication()。我也不确定app.UseMiddleware<AutenticacaoMiddleware<Autenticacao>>()是什么意思。您能告诉我们AutenticacaoMiddleware和Autenticacao吗？

WebAPI ASP Net Core JWT承载身份验证“签名无效”

1 个答案: