调试时，ASP.NET Core Web API总是以退出码0（0x0）退出

前端开发 2026-07-11

我目前正在处理一个ASP.NET Core Web API项目解决方案，它包含以下三个子项目目录：

- API/
- Core/
- Persistence/

对于我的项目，我希望 Core 来处理 Persistence 的服务与生命周期。理想情况下，我希望 API 只是进入 Core 项目的一个简单网关——它不应该知道关于 Persistence 或其他子项目的任何事情。

为了解决这个问题，我在 Core 中创建了一个运行时类：

namespace Kumi.Core;

public class KumiRuntime(IServiceProvider services) : IHostedService
{
    public async Task StartAsync(CancellationToken cancellationToken)
    {
        using var scope = services.CreateScope();
        var db = scope.ServiceProvider.GetRequiredService<KumiDbContext>();
        await db.Database.MigrateAsync(cancellationToken);
    }

    public Task StopAsync(CancellationToken cancellationToken)
    {
        return Task.CompletedTask;
    }
}

以及一个用于处理服务的服务扩展类：

namespace Kumi.Core;

public static class KumiServiceExtension
{
    public static IServiceCollection AddKumiRuntime(this IServiceCollection services)
    {
        services.AddDbContext<KumiDbContext>();
        services.AddHostedService<KumiRuntime>();

        return services;
    }
}

随后我将 Core 的运行时添加到ASP.NET Core Web API的服务中，在 Program.cs 文件中：

builder.Services.AddKumiRuntime();

Core 使用来自 Persistence 项目的以下 DbContext：

namespace Kumi.Persistence;

public class KumiDbContext : DbContext
{
    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseNpgsql("CONNECTION");
        base.OnConfiguring(optionsBuilder);
    }
}

问题

每当我使用 dotnet run 运行Web API时，一切正常。然而进入调试模式后，项目会先构建，然后以退出码0 (0x0) 退出：

程序 '[17734] Kumi.API.dll' 已以退出码0 (0x0) 退出

我不确定为什么它会持续退出，而不是等待HTTP连接。我尝试手动构建并运行该项目，结果也同样正常。

我在VS Code中进行调试，确实安装了C# Dev Kit扩展，并使用“为构建和调试生成资源”命令生成了 launch.json 和 tasks.json 文件。

我的 launch.json：

{
    "version": "0.2.0",
    "configurations": [
        {
            // Use IntelliSense to find out which attributes exist for C# debugging
            // Use hover for the description of the existing attributes
            // For further information visit https://github.com/dotnet/vscode-csharp/blob/main/debugger-launchjson.md.
            "name": ".NET Core Launch (web)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            // If you have changed target frameworks, make sure to update the program path.
            "program": "${workspaceFolder}/Kumi.API/bin/Debug/net10.0/Kumi.API.dll",
            "args": [],
            "cwd": "${workspaceFolder}/Kumi.API",
            "stopAtEntry": false,
            // Enable launching a web browser when ASP.NET Core starts. For more information: https://aka.ms/VSCode-CS-LaunchJson-WebBrowser
            "serverReadyAction": {
                "action": "openExternally",
                "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
            },
            "env": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "sourceFileMap": {
                "/Views": "${workspaceFolder}/Views"
            }
        },
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach"
        }
    ]
}

我的 tasks.json：

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build",
            "command": "dotnet",
            "type": "process",
            "args": [
                "build",
                "${workspaceFolder}/kumi.slnx",
                "/property:GenerateFullPaths=true",
                "/consoleloggerparameters:NoSummary;ForceNoAlign"
            ],
            "problemMatcher": "$msCompile"
        },
        {
            "label": "publish",
            "command": "dotnet",
            "type": "process",
            "args": [
                "publish",
                "${workspaceFolder}/kumi.slnx",
                "/property:GenerateFullPaths=true",
                "/consoleloggerparameters:NoSummary;ForceNoAlign"
            ],
            "problemMatcher": "$msCompile"
        },
        {
            "label": "watch",
            "command": "dotnet",
            "type": "process",
            "args": [
                "watch",
                "run",
                "--project",
                "${workspaceFolder}/kumi.slnx"
            ],
            "problemMatcher": "$msCompile"
        }
    ]
}