为什么Microsoft.aspnetcore.odata要打破我的狂妄?

我已经在.NETCore3.0WebAPI项目中大摇大摆地运行了很长一段时间,没有任何问题。

我刚从Nuget商店安装了Microsoft.aspnet.odata。我想我一定是在配置文件中出错了。

odata正在工作,但我的swashback中间件不工作。

代码如下: 注意:我知道还有其他的中间件是草率的,但是在添加关于odata的行之前,它已经全部工作了。

我试着搞乱语法的顺序,但运气不好。我知道是什么破坏了它,但描述起来有困难。

namespace MyProjectPortalVueJs
{
    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.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.AddAuthentication(sharedOptions =>
            {
                sharedOptions.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                sharedOptions.DefaultChallengeScheme = OpenIdConnectDefaults.AuthenticationScheme;
            })
            .AddAzureAd(options =>
            {
            Configuration.Bind("AzureAd", options);
            AzureAdOptions.Settings = options;
            })
            .AddCookie();
            // Add framework services.
            services.AddMvc()
            //UNSURE WHAT THE COMPATIBILITY WAS DOING.  CHANGED ON 4-16-2019
            //.SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
            .AddSessionStateTempDataProvider();
            services.AddSession();
            // Simple example with dependency injection for a data provider.
            services.AddSingleton<Providers.IWeatherProvider, Providers.WeatherProviderFake>();




            // Register the Swagger generator, defining 1 or more Swagger documents
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new Info { Title = "My API", Version = "v1" });
            });

            services.AddOData();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            // Enable middleware to serve generated Swagger as a JSON endpoint.
            app.UseSwagger();

            // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.), 
            // specifying the Swagger JSON endpoint.
            app.UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
            });


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

                // Webpack initialization with hot-reload.
                app.UseWebpackDevMiddleware(new WebpackDevMiddlewareOptions
                {
                    HotModuleReplacement = true,
                });
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseStaticFiles();
            app.UseSession(); // Needs to be before app.UseAuthentication() and app.UseMvc() otherwise you will get an exception "Session has not been configured for this application or request."
            app.UseAuthentication();
            app.UseMvc(routes =>
            {
                routes.EnableDependencyInjection();
                routes.Expand().Select().Count().OrderBy().Filter();

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

                routes.MapSpaFallbackRoute(
                    name: "spa-fallback",
                    defaults: new { controller = "Home", action = "Index" });
            });
        }
    }
}