Asp.net core 3.1 .net核心Ocelot是一个名为'；配置开发'；或'；配置'；找不到

下面的代码属于.net核心web api，我称之为OcelotApiGateway

我通过OcelotApiGateway上的nuget package manager安装了Ocelot 16.0.1

这是我的程序。cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;

namespace OcelotApiGateway
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.ConfigureAppConfiguration((host, config) => config.AddJsonFile("ocelot.json"));
                    webBuilder.UseStartup<Startup>();
                });
    }
}

using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Ocelot.DependencyInjection;
using Ocelot.Middleware;

namespace OcelotApiGateway
{
    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.AddControllers();
            services.AddOcelot(Configuration);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public async Task ConfigureAsync(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseHttpsRedirection();

            app.UseRouting();

            app.UseAuthorization();

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

            await app.UseOcelot();
        }
    }
}

但是在“

CreateHostBuilder（args）.Build（）.Run（）的行中Program.cs

中，发生此错误

System.InvalidOperationException:'在'OcelotApiGateway.Startup'类型中找不到名为'ConfigureDevelopment'或'Configure'的公共方法。'

---

我解决了这个问题，这是我的错。当我在Configure（）方法中添加

wait

时，Visual studio自动更改了此方法。如下。我后来意识到了这一点

public async Task ConfigureAsync(IApplicationBuilder app, IWebHostEnvironment env)

此方法必须：

public async void Configure(IApplicationBuilder app, IWebHostEnvironment env)

---

不要使用

异步void

！您的代码之所以有效，是因为在Ocelot启动中没有真正的异步工作。但如果它改变了，你的服务就会失败。