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asp.net-core-3.1 - .net core Ocelot 找不到名为“ConfigureDevelopment”或“Configure”的公共方法

问题描述

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

我通过 OcelotApiGateway 上的 nuget 包管理器安装了 Ocelot 16.0.1。

这是我的Program.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>();
                });
    }
}

这是Startup.cs

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();
        }
    }
}

但在 ' CreateHostBuilder(args).Build().Run();' in行Program.cs，出现此错误

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

标签： asp.net-core-3.1.net-core-3.1ocelot

解决方案

我解决了这个问题，这是我的错。当我await在 Configure() 方法中添加时，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)

此方法必须是：

public async void Configure(IApplicationBuilder app, IWebHostEnvironment env)

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