Question

我已经通过Yeoman创建了一个基本的WebAPI项目（请注意：我对我正在处理的“真实”项目有同样的问题，但yo也针对netcoreapp1.0展示了问题在OSX上。

在命令行上，它可以通过dotnet restore，dotnet build，dotnet run恢复，构建和运行。

当我使用Visual Studio Code并使用Debug时，我总是会收到错误："The configuration file 'config.json' was not found and is not optional."，它指向我Main方法的第一行。

这是我的Program.cs入口点：

public static void Main(string[] args)
{            
    var host = new WebHostBuilder()
        .UseKestrel()
        .UseContentRoot(Directory.GetCurrentDirectory())
        .UseIISIntegration()
        .UseStartup<Startup>()
        .Build();

    host.Run();
}

以下是project.json：

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.0",
      "type": "platform"
    },
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Configuration.CommandLine": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0"
  },

  "tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "Views",
      "Areas/**/Views",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  },

  "tooling": {
    "defaultNamespace": "WebAPIApplication"
  }
}

添加Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

namespace WebAPIApplication
{
    public class Startup
    {
        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("config.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"config.{env.EnvironmentName}.json", optional: true)
                .AddEnvironmentVariables();
            Configuration = builder.Build();
        }

        public IConfigurationRoot Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            // Add framework services.
            services.AddMvc();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseMvc();
        }
    }
}

如果需要任何其他信息，请告诉我，我很乐意添加。

正如Gerardo建议的那样，打印Directory.GetCurrentDirectory()我会得到两个不同的输出。

从命令行（有效）：~/Projects/Path/WebApiApplication/ 来自VSCode中的调试：~/Projects/Path

我还注意到输出是~/Projects/Path/WebApiApplication/bin/Debug/netcoreapp1.0/但是没有文件（包括config.json）。

Answer 1

似乎dotnet run正在项目文件夹上运行并且工作正常，但VS Code调试模式不是。

这是在VS Code配置文件.vscode\launch.json中配置的。找到说：

的行

       "cwd": "${workspaceRoot}",

并将其更改为：

        "cwd": "${workspaceRoot}/MyProjectFolder",

您需要更改启动文件夹（cwd），使其与project.json / config.json /等的位置相匹配。

更多信息：Visual Studio Code Launch Configurations

Answer 2

移动“YourSolution / src / YourProject”目录中的.vscode文件夹，错误地在YourSolution目录中的VSCode中打开项目，并通过调整配置，如建议的答案运行应用程序，但配置问题。

因此，在VSCode中，您必须从YourProject内部打开项目，默认配置才能正常运行。

在调试中的ASP.NET核心启动时找不到config.json

2 个答案: