ASP.NET Core 3.1 - HTTP 错误 500.30 - ANCM 进程内启动失败

Question

我正在使用 3.1 版本配置 net core web api。我已经在这里检查了这个问题，但没有一个答案适用于我的案例。

我尝试使用 net core ver 3.1 配置 web api。另一个具有类似配置和相同版本软件包的应用程序也可以在我的电脑上使用相同的 iis express。

这是我的 Startup.cs

public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }
        public IConfiguration Configuration { get; }
        readonly string AllowSpecificOrigins = "_allowSpecificOrigins";


        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors(options =>
            {
                options.AddPolicy(AllowSpecificOrigins,
                builder =>
                {
                    builder.AllowCredentials().AllowAnyMethod().AllowAnyHeader().WithOrigins("http://localhost:4200");
                });
            });

            services.AddControllers()
                .AddNewtonsoftJson();

            services.AddScoped<IAccountRepository, AccountRepository>();
            services.AddScoped<IDocsRepository, DocsRepository>();

            services.AddDbContext<LibContext>(options =>
                options.UseNpgsql(Configuration.GetConnectionString("LibraryDatabase"), x => x.UseNetTopologySuite()));

            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                .AddJwtBearer(options =>
                {
                    options.RequireHttpsMetadata = false; 
                    options.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidateIssuer = true,
                        ValidIssuer = AuthOptions.ISSUER,
                        ValidateAudience = true,
                        ValidAudience = AuthOptions.AUDIENCE,
                        ValidateLifetime = true,
                        IssuerSigningKey = AuthOptions.GetSymmetricSecurityKey(),
                        ValidateIssuerSigningKey = true
                    };                  
                });
            services.AddIdentity<ApplicationUser, IdentityRole>(options =>
            {
                //password settings
                options.Password.RequiredLength = 8;
                options.Password.RequireNonAlphanumeric = false;

                options.User.RequireUniqueEmail = true;

                //lockout settings
                options.Lockout.AllowedForNewUsers = true;
                options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(5);
                options.Lockout.MaxFailedAccessAttempts = 5;
            })
                .AddEntityFrameworkStores<LibContext>()
                .AddUserManager<UserManager<ApplicationUser>>()
                .AddDefaultTokenProviders();

            services.AddSignalR();

        }


        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            app.UseCors(AllowSpecificOrigins); //DEV MODE!           
            app.UseStaticFiles();
            app.UseStaticFiles(new StaticFileOptions()
            {
                FileProvider = new PhysicalFileProvider(Path.Combine(Directory.GetCurrentDirectory(), @"Library")),
                RequestPath = new PathString("/Library")
            });
            app.UseRouting();
            app.UseAuthentication();
            app.UseAuthorization();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();                
            });
        }
    }

好像我没有错别字 appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "ConnectionStrings": {
    "LibraryDatabase": "Host=localhost;Port=5432;Database=librarydb;Username=postgres;Password=mypasshere"
  }
}

我的 app.csproj

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <Folder Include="Library\" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="3.1.3" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.1.3" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.3" />
    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="2.2.0" />
    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.NetTopologySuite" Version="2.2.0" />
    <PackageReference Include="ProjNET4GeoAPI" Version="1.4.1" />
  </ItemGroup>


</Project>

事件查看器抛出 2 个错误，但我无法弄清楚出了什么问题。错误：

具有物理根目录“我的应用程序文件夹”的应用程序“/LM/W3SVC/2/ROOT”已从 Program.Main 退出，退出代码为“0”。捕获的 stdout 和 stderr 日志的前 30KB 字符：程序启动

具有物理根目录“我的应用程序文件夹”的应用程序“/LM/W3SVC/2/ROOT ”无法加载 coreclr。异常消息：CLR 工作线程提前退出

谢谢你的时间

Answer 1

好吧，我想我找到了答案。它对我的情况有效！

有趣的问题是程序 main.cs 与此配置无关，它们表现得很好。有几种情况会发生此错误

案例 1-从其他核心版本迁移到 .net core 3.1 时。将kestrel与 IHostBuilder结合使用。不要使用这个

            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.ConfigureKestrel(serverOptions =>
                    {
                        //..
                    })
                    .UseStartup<Startup>();
                })
            .Build();

而是使用这种风格。（创建主机构建器）

            var host = CreateHostBuilder(args).UseServiceProviderFactory(new AutofacServiceProviderFactory()).Build();
            host.Run();

//..

public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
    webBuilder.ConfigureKestrel(serverOptions =>
    {
        serverOptions.Limits.MaxConcurrentConnections = 100;
        serverOptions.Limits.MaxConcurrentUpgradedConnections = 100;
        serverOptions.Limits.MaxRequestBodySize = 10 * 1024;
        serverOptions.Limits.MinRequestBodyDataRate =
            new MinDataRate(bytesPerSecond: 100,
                gracePeriod: TimeSpan.FromSeconds(10));
        serverOptions.Limits.MinResponseDataRate =
            new MinDataRate(bytesPerSecond: 100,
                gracePeriod: TimeSpan.FromSeconds(10));
        serverOptions.Limits.KeepAliveTimeout =
            TimeSpan.FromMinutes(2);
        serverOptions.Limits.RequestHeadersTimeout =
            TimeSpan.FromMinutes(1);
    })
    .UseContentRoot(Directory.GetCurrentDirectory())
    .UseIISIntegration()
    .UseStartup<Startup>();
});

情况 2 - Program.cs 找不到 Logger 文件或配置文件。可能无法获取文件夹文件权限等。在main函数中用try catch检查一下。

情况 3- InProcess 模式没有 AspNetCoreModuleV2 或配置错误

一般来说，1 是该错误的正确情况，但对 2 和 3 感兴趣