.net - 找不到库 hostpolicy.dll

Question

我有一个简单的 .NET Core 项目(控制台应用程序)，我正在尝试编译和运行它。 dotnet build 成功，但是当我执行 dotnet run 时出现以下错误:

dotnet run
Project RazorPrecompiler (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
A fatal error was encountered. The library 'hostpolicy.dll' required to execute the application was not found in [path].

我的 project.json 看起来像这样:

{
  "buildOptions": {
    "warningsAsErrors": true
  },
  "dependencies": {
    "Microsoft.AspNetCore.Razor": "1.0.0",
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    }
  },
  "description": "Precompiles Razor views.",
  "frameworks": {
    "netcoreapp1.0": {
      "imports": [ ]
    }
  },
  "version": "1.2.0"
}

什么是 hostpolicy.dll，为什么会丢失？

Answer 1

dotnet core 2.0 及更高版本的更新:文件appname.runtimeconfig.json(用于调试和发布配置)需要位于与相同的路径中appname.dll.

它包含:

{
  "runtimeOptions": {
    "tfm": "netcoreapp2.0",
    "framework": {
      "name": "Microsoft.NETCore.App",
      "version": "2.0.0"
    }
  }
}

然后 dotnet.exe exec "path/to/appname.dll"[appargs] 工作。