尝试生成脚手架 API 控制器时出现 VS2015 错误

Question

我正在尝试在我的测试解决方案中生成脚手架组件。我在我的项目中右键单击并单击“添加脚手架项目”，然后选择“API 控制器与实体框架中的操作”。在那里我选择我的模型类和上下文，当我单击添加时，它会引发以下错误：

错误 运行所选代码生成器时出错：'未处理的异常：System.TypeLoadException：无法加载类型'Microsoft.VisualStudio.Web.Codegeneration.Core，版本=1.1.0.0，Culture=neutral，PublicKeyToken=adb9793829ddae60'，在 Microsoft .VisualStudio.Web.CodeGeneration.Tools.Program.Main(String [] args)'

我确信这是由解决方案的依赖性问题引起的。到目前为止，我已经尝试包含 Microsoft.VisualStudio.Web.CodeGeneration.Core 库，但没有解决问题。

这些是我项目的依赖项：

  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.1.1"
    },
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.1.0",
    "Microsoft.VisualStudio.Web.CodeGenerators.Mvc": {
      "version": "1.1.0",
      "type": "build"
    },
    "Microsoft.AspNetCore.Authentication.Cookies": "1.1.1",
    "Microsoft.AspNetCore.Diagnostics": "1.1.1",
    "Microsoft.Extensions.Logging": "1.1.1",
    "Microsoft.Extensions.Logging.Console": "1.1.1",
    "Microsoft.Extensions.Logging.Debug": "1.1.1",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.1",
    "Microsoft.Extensions.Configuration.Json": "1.1.1",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.1.1",
    "Microsoft.AspNetCore.Server.Kestrel": "1.1.1",
    "Microsoft.Extensions.Configuration.UserSecrets": "1.1.1",
    "Microsoft.AspNetCore.Routing": "1.1.1",
    "Microsoft.AspNetCore.StaticFiles": "1.1.1",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.1",
    "Microsoft.AspNetCore.Mvc": "1.1.2",
    "Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.1.1",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.1.1",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.1.0-preview4-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.1.0-preview4-final",
      "type": "build"
    },
    "Microsoft.EntityFrameworkCore": "1.1.1",
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.1.0",
      "type": "build"
    },
    "Pomelo.EntityFrameworkCore.MySql": "1.1.1-prerelease-10020",
    "Pomelo.EntityFrameworkCore.MySql.Design": "1.1.1-prerelease-10020",
    "Microsoft.VisualStudio.Web.CodeGeneration.Core": "1.1.0"
  },
  "tools": {
    "BundlerMinifier.Core": "2.4.337",
    "Microsoft.AspNetCore.Razor.Tools": "1.1.0-preview4-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.1.0-preview4-final",
    "Microsoft.EntityFrameworkCore.Tools": "1.1.0",
    "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.1.0-preview4",
    "Microsoft.Extensions.SecretManager.Tools": "1.1.0-preview4-final",
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.1.0-preview4-final",
      "imports": [
        "portable-net45+win8"
      ]
    }
  },
  "frameworks": {
    "netcoreapp1.1": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

提前感谢您的帮助。

Answer 1

依赖版本错误和平台代码生成器不兼容导致的问题。

将项目打开/转换为 VS2017 社区并与 VS2017 的空白新项目进行比较显示了问题。我强迫 VS2015 在 .Net Core 1.1.1 和不可用的代码生成器版本上工作。

错了：

  <ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Logging" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Routing" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.0.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.1" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.1.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.0" />
<PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="1.1.1-prerelease-10020" />
<PackageReference Include="Pomelo.EntityFrameworkCore.MySql.Design" Version="1.1.1-prerelease-10020" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Core" Version="1.1.0" />

右边：

  <ItemGroup>
<PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.1" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.1" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.1.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.0" />
<PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="1.1.1-prerelease-10020" />
<PackageReference Include="Pomelo.EntityFrameworkCore.MySql.Design" Version="1.1.1-prerelease-10020" />