全新的 razor 项目在调试 VS 时返回 404

Question

我多次尝试从 Visual Studio 2022 和 2019 创建新的剃刀项目

样板模板如下，但是当我单击调试按钮时，控制台输出其监听正常，如下所示

Microsoft.Hosting.Lifetime: Information: Now listening on: https://localhost:7277
Microsoft.Hosting.Lifetime: Information: Now listening on: http://localhost:5227
Microsoft.Hosting.Lifetime: Information: Application started. Press Ctrl+C to shut down.
Microsoft.Hosting.Lifetime: Information: Hosting environment: Development

但是，当我导航到这些网址中的任何一个时，我会收到 404。

但是，如果我通过控制台执行 dotnet run 或 dotnet watch，则运行正常，不会出现 404 错误。

这是我的 LunchSettings.json 文件（未触及样板文件）

{
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:25708",
      "sslPort": 44374
    }
  },
  "profiles": {
    "http": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "applicationUrl": "http://localhost:5227",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "https": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "applicationUrl": "https://localhost:7277;http://localhost:5227",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}

和Program.cs

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();

app.UseAuthorization();

app.MapRazorPages();

app.Run();

和文件夹结构（与 vs 样板相比均未更改）

这是调试箱

我尝试重置 vs 设置并启动多个项目

Answer 1

经过大量研究，我设法解决了这个问题，但只能完全卸载 Visual Studio 并重新安装。