ASP.NET Core 6 MVC - 未找到視圖“索引”

Question

我可以在 VS2022 中毫無問題地運行我的 asp.net 6 mvc 應用程序。 當我發布到文件夾並部署到 IIS 或自己運行 exe 時，我收到錯誤消息“未找到視圖索引”。

報告的搜索位置是正確的。 我的視圖位於正確的文件夾中。

我還添加了 Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation nuget package 並更新了 Program.cs：

builder.Services.AddControllersWithViews().AddRazorRuntimeCompilation();

*.cshtml 文件生成操作在 Visual Studio 中設置為內容。

各種 stackoverlow 帖子中的任何建議都無法解決問題。 大多數與 VS2022 問題相關，需要添加 Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation package。

我已設置 stdoutLogEnabled="true" 並驗證運行 IIS 時生成的日志與調用 .exe 時的日志 output 匹配。 我不認為這是 IIS 問題。

下面是我的 Program.cs：

     var builder = WebApplication.CreateBuilder(args);

    // Add services to the container.
    builder.Services.AddControllersWithViews().AddRazorRuntimeCompilation();
    builder.Services.AddDistributedMemoryCache();
    builder.Services.AddHttpContextAccessor();

    var app = builder.Build();
    app.UseExceptionHandler("/Home/Error");
    app.UseStatusCodePagesWithReExecute("/Home/Error", "?code={0}");
    app.UseStaticFiles();
    app.UseRouting();
    app.UseAuthorization();
    app.MapControllerRoute(
                            name: "default",
                            pattern: "{controller=Home}/{action=Index}/{id?}");
    app.Run();

對 appsettings.json 沒什么興趣：

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "AllowedHosts": "*"
}

工程文件如下：

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <RootNamespace>MyFirstApp.MVC</RootNamespace>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Dapper" Version="2.0.123" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="6.0.10" />
    <PackageReference Include="Microsoft.Data.Sqlite" Version="7.0.2" />
    <PackageReference Include="System.Data.SqlClient" Version="4.8.4" />
    <PackageReference Include="System.DirectoryServices.AccountManagement" Version="6.0.0" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="wwwroot\images\" />
  </ItemGroup>

</Project>

下面是錯誤日志。 添加日志記錄以確認 Controller 操作方法正在完成且沒有錯誤：

info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
      Content root path: D:\Projects\ReportViewer
**info: ReportViewer.MVC.Controllers.HomeController[0]
      Into Index**
**info: ReportViewer.MVC.Controllers.HomeController[0]
      About to return view Index**
fail: Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor[3]
      The view 'Index' was not found. Searched locations: /Views/Home/Index.cshtml, /Views/Shared/Index.cshtml
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
      An unhandled exception has occurred while executing the request.
      System.InvalidOperationException: The view 'Index' was not found. The following locations were searched:
      /Views/Home/Index.cshtml
      /Views/Shared/Index.cshtml
         at Microsoft.AspNetCore.Mvc.ViewEngines.ViewEngineResult.EnsureSuccessful(IEnumerable`1 originalLocations)
         at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor.ExecuteAsync(ActionContext context, ViewResult result)
         at Microsoft.AspNetCore.Mvc.ViewResult.ExecuteResultAsync(ActionContext context)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|30_0[TFilter,TFilterAsync](ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters()
      --- End of stack trace from previous location ---
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync()
      --- End of stack trace from previous location ---
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
         at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
         at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.<Invoke>g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task)
fail: Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor[3]
      The view 'Error' was not found. Searched locations: /Views/Home/Error.cshtml, /Views/Shared/Error.cshtml
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[3]
      An exception was thrown attempting to execute the error handler.
      System.InvalidOperationException: The view 'Error' was not found. The following locations were searched:
      /Views/Home/Error.cshtml
      /Views/Shared/Error.cshtml

如果您有任何建議，我將不勝感激。

謝謝，

槊

Answer 1

結果是 VS 中的發布步驟無法解析某些 MVC 分析器 dll。 盡管如此，它仍然報告發布成功並生成了 dll 和 exe 文件。

滾動瀏覽發布 output 日志以尋找任何線索后才發現發布問題。

發布問題是由於在開發機器上安裝了兩個版本的 .NET6 引起的。 我刪除了舊版本並更新了 do.net 環境變量以指向位於 C:\Program Files.... 的 do.net6，這破壞了 MVP 項目中的依賴框架。 Microsoft.As.netCore.App 和 Microsoft.NETCore.App 的路徑和版本條目為空。

在時間壓力下，創建了一個新的 MVC 項目，將所有文件復制到這個新項目，發布並部署到 IIS，沒有任何問題。