ASP.NET Core 5 应用程序找不到视图错误

Question

我在 Visual Studio 2019 中创建了一个 ASP.NET Core 5 应用程序项目。

要求是视图不应被预编译。

所以我将 RazorCompileOnPublish 设置为 false：

<RazorCompileOnPublish>false</RazorCompileOnPublish>

在.csproj 文件中。

发布项目后，将Views文件夹复制到发布目录。

但在运行时，我收到以下错误。

System.InvalidOperationException：未找到视图“索引”。搜索了以下位置：

  /Views/Home/Index.cshtml  
  /Views/Shared/Index.cshtml

在 Microsoft.AspNetCore.Mvc.ViewEngines.ViewEngineResult.EnsureSuccessful（IEnumerable1 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.<InvokeResultAsync>g__Logged|21_0(ResourceInvoker invoker, IActionResult result) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|29_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|24_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__Logged|17_1(ResourceInvoker invoker) at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.<Invoke>g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task) at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.HandleException(HttpContext context, ExceptionDispatchInfo edi) at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.<Invoke>g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication1 应用程序） 错误：Microsoft.AspNetCore.Server.Kestrel[9] *

program.cs和Startup.cs文件如下：

public class Startup
{        
    public IConfiguration Configuration { get; }

    public Startup(IConfiguration configuration) {
        Configuration = configuration;
    }     

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services) {
        services.AddControllersWithViews();           
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env) {
        if (env.IsDevelopment()) {
            app.UseDeveloperExceptionPage();
        }
        else {
            app.UseExceptionHandler("/Home/Error");
        }          
        app.UseStaticFiles();

        app.UseRouting();
        app.UseAuthorization();

        app.UseEndpoints(endpoints => {
            endpoints.MapControllerRoute(
                name: "default",
                pattern: "{controller=Home}/{action=Index}/{id?}");
            //endpoints.MapRazorPages(); //Has no effect
        });
    }
}

public class Program {
    public static void Main(string[] args) {
        CreateHostBuilder(args).Build().Run();
    }

    public static IHostBuilder CreateHostBuilder(string[] args) {
        Console.WriteLine($"ContentRoot set to: {Directory.GetCurrentDirectory()}");
        var hostBuilder = Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder => {
                webBuilder.UseKestrel()
                .UseContentRoot(Directory.GetCurrentDirectory())                    
                .UseStartup<Startup>();
            });
        return hostBuilder;
    }
}

请帮忙。提前致谢

Answer 1

此设置可在 .net core 2.x 中使用，但无法在 .net core 5 中启用运行时编译。

1. 在这种情况下，您可以使用AddRazorRuntimeCompilation 来启用运行时编译。

   public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews()
            .AddRazorRuntimeCompilation();
    }
   

2. 另一种方法是有条件地启用运行时编译。

   public Startup(IConfiguration configuration,IWebHostEnvironment webHostEnvironment)
    {
        Configuration = configuration;
        Env = webHostEnvironment;
    }
    //...
    public IWebHostEnvironment Env { get; set; }
   
    public void ConfigureServices(IServiceCollection services)
    {
        IMvcBuilder builder = services.AddRazorPages();
   
        if (!Env.IsDevelopment())
        {
            builder.AddRazorRuntimeCompilation();
        }
        services.AddControllersWithViews();
    }
   

你可以参考这个document。

我在编辑器中编辑Index.cshtml。

然后将其保存在发布文件夹中并启动项目。它编译成这样。