您需要在 Tools 上添加引用.但仅限于构建时间

You need to add references on Tools. But only for build time

在 project.json 中，将以下内容添加到 dependencies 部分:

in project.json, add the following to the dependencies section:

"Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
  "version": "1.0.0-preview2-final",
  "type": "build"
},
"Microsoft.VisualStudio.Web.CodeGenerators.Mvc":  {
  "version": "1.0.0-preview2-final",
  "type": "build"
}

仍然在 project.json 中，找到 tools 部分并添加以下内容

Still in project.json, locate the tools section and add the following

"Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
  "version": "1.0.0-preview2-final",
  "imports": [
    "portable-net45+win8"
  ]
}