Question

我想从我的 WEB API 中获取一些数据，但是在API调试控制台中却收到了这样的错误消息：

 fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
      An unhandled exception has occurred while executing the request.
System.InvalidOperationException: Endpoint WebAPI_1.Controllers.DataCTXController.Get (WebAPI_1) contains authorization metadata, but a middleware was not found that supports authorization.
Configure your application startup by adding app.UseAuthorization() inside the call to Configure(..) in the application startup code. The call to app.UseAuthorization() must appear between app.UseRouting() and app.UseEndpoints(...).
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.ThrowMissingAuthMiddlewareException(Endpoint endpoint)
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

我使用邮递员发送请求。我试图在各行之间移动app.UseAuthorization（）并自行解决某些问题，但仍然一无所获，这就是为什么我需要您的帮助。这是我的Startup.cs代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using WebAPI_1.Data;
using Microsoft.EntityFrameworkCore;
using System.Data.Sql;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using System.Text;

namespace WebAPI_1
{
    public class Startup
    {
        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)
        {
            services.AddDbContext<DataContext>(s => s.UseSqlServer(Configuration.GetConnectionString("Default1")));

            services.AddControllers();

            services.AddMvc(services => services.EnableEndpointRouting = false);

            services.AddCors();

            services.AddScoped<IAuthRepository, AuthRepository>();

            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(Options =>
            {
                Options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.ASCII.GetBytes(Configuration.GetSection("AppSettings:Token").Value)),
                    ValidateIssuer = false,
                    ValidateAudience = false
                };
            });

        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {

            app.UseCors(options => options.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod());

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseRouting();

            app.UseAuthentication();

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

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

感谢帮助。

Answer 1

由于不言而喻，

通过在应用程序启动代码中对Configure（..）的调用内添加app.UseAuthorization（）来配置应用程序启动。对app.UseAuthorization（）的调用必须出现在app.UseRouting（）和app.UseEndpoints（...）
之间

您需要添加

app.UseAuthorization();

在配置方法中。

app.UseRouting();

app.UseAuthentication();
app.UseAuthorization(); // Add it here
app.UseEndpoints(endpoints =>
{
    endpoints.MapControllers();
});

执行请求时发生未处理的异常

1 个答案: