執行請求時發生未處理的異常

Question

我想從我的WEB API獲取一些數據，但我在 API 調試控制台中收到了這樣的錯誤消息：

 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)

我使用郵遞員發送請求。 我試圖在行之間移動 app.UseAuthorization() 並自己計算一些東西，但仍然沒有，所以這就是為什么我需要你的幫助。 這是我的 Startup.cs 代碼：

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?}");
            }
            );
        }
    }
}

感謝幫助。

Answer 1

由於異常是不言自明的，

通過在應用程序啟動代碼中對 Configure(..) 的調用中添加 app.UseAuthorization() 來配置您的應用程序啟動。 對 app.UseAuthorization() 的調用必須出現在 app.UseRouting() 和 app.UseEndpoints(...)

你需要添加

app.UseAuthorization();

在配置方法中。

app.UseRouting();

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