Microsoft.Extensions.Hosting.HostFactoryResolver+HostingListener+StopTheHostException

Question

我正在使用Asp.Net Core 6

在迁移我的DbContext和更新数据库时，我面临一个错误

误差

[17:07:29 INF] Application Is Starting
[17:07:29 FTL] Application terimnated unexpectedly
Microsoft.Extensions.Hosting.HostFactoryResolver+HostingListener+StopTheHostException: Exception of type 'Microsoft.Extensions.Hosting.HostFactoryResolver+HostingListener+StopTheHostException' was thrown.
   at Microsoft.Extensions.Hosting.HostFactoryResolver.HostingListener.OnNext(KeyValuePair`2 value)
   at System.Diagnostics.DiagnosticListener.Write(String name, Object value)
   at Microsoft.Extensions.Hosting.HostBuilder.Build()
   at Microsoft.AspNetCore.Builder.WebApplicationBuilder.Build()
   at Program.<Main>$(String[] args) in C:\...\Program.cs:line 44

但它不影响迁移过程和更新-数据库

所以，我的问题是，

• 如何修复它
• 这会影响以后的项目吗？

Program.cs

Log.Information("Application Is Starting");

    var builder = WebApplication.CreateBuilder(args);

    // Full setup of serilog. We read log settings from appsettings.json
    builder.Host.UseSerilog((context, services, configuration) => configuration
        .ReadFrom.Configuration(context.Configuration)
        .ReadFrom.Services(services)
        .Enrich.FromLogContext());


    // Add services to the container.
    builder.Services.AddDbContext<LocalDbContext>(options =>
        options.UseSqlServer(builder.Configuration.GetConnectionString("localConnection"))
    );

    builder.Services.AddControllers();
    builder.Services.AddCors(options =>
    {
        options.AddPolicy("AllowAll", builder =>
            builder
                .AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader()
            );
    });
    // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
    builder.Services.AddEndpointsApiExplorer();
    builder.Services.AddSwaggerGen();

    var app = builder.Build();

    app.UseSerilogRequestLogging(configure =>
    {
        configure.MessageTemplate = "HTTP {RequestMethod} {RequestPath} ({UserId}) responded {StatusCode} in {Elapsed:0.0000}ms";
    });

    // Configure the HTTP request pipeline.
    if (app.Environment.IsDevelopment())
    {
        app.UseSwagger();
        app.UseSwaggerUI();
    }

    app.UseCors("AllowAll");

    app.UseHttpsRedirection();

    app.UseAuthorization();

    app.MapControllers();

    app.Run();

Answer 1

在任何.NET/EFCore6.0 RC2项目中添加类似于上述IHostBulder.Build()的try/catch，并且尝试添加迁移可以重现这个问题。

我们可以用以下方法解决这个问题：

catch (Exception ex)
{
   string type = ex.GetType().Name;
   if (type.Equals("StopTheHostException", StringComparison.Ordinal))
   {
      throw;
   }

   _logger.Fatal(ex, "Unhandled exception");
   return 1;
}

有关此问题的更多详细信息，请参阅本文.。

StopTheHostException应该被公开，以便被优雅地对待#60600