无法在 Visual Studio Code for Mac 中运行默认 ASP.NET Web 应用程序

Question

刚刚在 Mac 上使用 Visual Studio Code 启动 ASP.NET 项目

我已经完成了所有常规步骤，以成功完成的dnu restore 命令结束。

然后我运行 dnx web 并得到一个正在运行的 localhost:5000 - 但是当我浏览到该地址时没有内容。

在终端窗口中，我可以看到下面的错误（很抱歉，我没有将其全部包含在内，因为它非常冗长）。

info: Microsoft.Extensions.DependencyInjection.DataProtectionServices[0]
      User profile is available. Using '/Users/deanchalk/.local/share/ASP.NET/DataProtection-Keys' as key repository; keys will not be encrypted at rest.
Hosting environment: Production
Now listening on: http://localhost:5000
Application started. Press Ctrl+C to shut down.
info: Microsoft.AspNet.Hosting.Internal.HostingEngine[1]
      Request starting HTTP/1.1 GET http://localhost:5000/  
info: Microsoft.AspNet.Mvc.Controllers.ControllerActionInvoker[1]
      Executing action method firstmacaspnetapp.Controllers.HomeController.Index with arguments () - ModelState is Valid'
fail: Microsoft.AspNet.Diagnostics.ExceptionHandlerMiddleware[0]
      An unhandled exception has occurred: Unable to resolve service for type 'Microsoft.Dnx.Compilation.ILibraryExporter' while attempting to activate 'Microsoft.AspNet.Mvc.Razor.Compilation.RoslynCompilationService'.
      System.InvalidOperationException: Unable to resolve service for type 'Microsoft.Dnx.Compilation.ILibraryExporter' while attempting to activate 'Microsoft.AspNet.Mvc.Razor.Compilation.RoslynCompilationService'.
        at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.PopulateCallSites (Microsoft.Extensions.DependencyInjection.ServiceProvider provider, ISet`1 callSiteChain, System.Reflection.ParameterInfo[] parameters, Boolean throwIfCallSiteNotFound) [0x00000] in <filename unknown>:0 
        at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.CreateCallSite (Microsoft.Extensions.DependencyInjection.ServiceProvider provider, ISet`1 callSiteChain) [0x00000] in <filename unknown>:0 
        at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetResolveCallSite (IService service, ISet`1 callSiteChain) [0x00000] in <filename unknown>:0 
        at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetServiceCallSite (System.Type serviceType, ISet`1 callSiteChain) [0x00000] in <filename unknown>:0 
        at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.PopulateCallSites (Microsoft.Extensions.DependencyInjection.ServiceProvider provider, ISet`1 callSiteChain, System.Reflection.ParameterInfo[] parameters, Boolean throwIfCallSiteNotFound) [0x00000] in <filename unknown>:0 
        at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.CreateCallSite (Microsoft.Extensions.DependencyInjection.ServiceProvider provider, ISet`1 callSiteChain) [0x00000] in <filename unknown>:0  

我用谷歌搜索了一下，找不到任何信息。

我的 project.json 看起来像这样：

{
  "version": "1.0.0-*",
  "userSecretsId": "aspnet5-firstmacaspnetapp-88915393-5f54-4e2d-9285-912b92370fb0",
  "compilationOptions": {
    "emitEntryPoint": true
  },
  "tooling": {
    "defaultNamespace": "firstmacaspnetapp"
  },

  "dependencies": {
    "EntityFramework.Commands": "7.0.0-rc1-final",
    "EntityFramework.SQLite": "7.0.0-rc1-final",
    "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
    "Microsoft.AspNet.Authentication.Cookies": "1.0.0-rc1-final",
    "Microsoft.AspNet.Diagnostics.Entity": "7.0.0-rc1-final",
    "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-rc1-final",
    "Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
    "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
    "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
    "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
    "Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
    "Microsoft.AspNet.Tooling.Razor": "1.0.0-rc1-final",
    "Microsoft.Dnx.Runtime":"1.0.0-rc1-final",
    "Microsoft.Extensions.CodeGenerators.Mvc": "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.FileProviderExtensions" : "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging.Console": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging.Debug": "1.0.0-rc1-final"
  },

  "commands": {
    "web": "Microsoft.AspNet.Server.Kestrel",
    "ef": "EntityFramework.Commands"
  },

  "frameworks": {
    "dnx451": { },
    "dnxcore50": { }
  },

  "exclude": [
    "wwwroot",
    "node_modules",
    "bower_components"
  ],
  "publishExclude": [
    "**.user",
    "**.vspscc"
  ],
  "scripts": {
    "prepublish": [
      "npm install",
      "bower install",
      "gulp clean",
      "gulp min"
    ]
  }
}

有人有什么想法吗？

Answer 1

类型

dnvm 列表

在您的项目文件夹中时进入终端。然后检查你的 project.json 中的所有项目，看看是否列出了正确的依赖版本。

然后运行

dnu 恢复

这在 OSX 上为我解决了这个问题。

Answer 2

所以，当我在我的 Mac 上设置我的 asp.net 项目时，我也遇到了这个错误。我通过升级 Mono 来修复它（如果那是您正在使用的库。如果您正在使用它，则应该升级核心）。要升级，请从终端将其用于单声道：

dnvm 升级 -r 单声道

使用它从终端升级核心：

dnvm 升级 -r coreclr

然后我运行 dnu restore 只是为了确定，然后运行 ​​dnx web 并且我能够将其拉到 http://localhost:5000/

注意：我首先进行了所有其他升级，所以这可能是最后一个问题（如果你明白我的意思的话）。不过值得一试，它对我有用。