Csharp Blazor服务器项目中的Blazor.NET 8Web API不工作

我已经开始了一个新的Blazor项目与新的.NET 8自动设置.

我正try 在我的服务器项目中放置一个Web API控制器，并使用我的ASP.NET身份验证功能来验证某人是否已登录等.

以下是我的API控制器设置:

[Route("api/[controller]")]
public class TestDataController : ApiController
{
    private readonly IWebHostEnvironment environment;

    public TestDataController(IWebHostEnvironment environment)
    {
        this.environment = environment;
    }

    [HttpGet]
    public IHttpActionResult Get()
    {
        string path = Path.Combine(environment.WebRootPath);

        string returnData = $"filename: {"1"} | path: {path}";

        return Ok(returnData);
    }
}

然后，在我的客户端项目中，我有这样的设置:

Program.cs个客户项目:

builder.Services.AddHttpClient("WebAPI",
client => client.BaseAddress = new Uri(builder.Configuration["BaseAddress"]));

builder.Services.AddScoped(sp => sp.GetRequiredService<IHttpClientFactory>()
    .CreateClient("WebAPI"));

剃须刀.

@page "/api-call"
@using App.Client.Services
@using System.Net.Http.Headers
@using Syncfusion.Blazor.Buttons
@using System.Text.Json

@inject IHttpClientFactory HttpClientFactory
@inject CookieService CookieService
@rendermode InteractiveWebAssembly

<h3>ApiCall</h3>

<SfButton OnClick="onToggleClick" Content="Click Me"></SfButton>

@if (APIValue != null)
{
    <h3>@APIValue</h3>
}
else
{
    <span>
        Loading products...
    </span>
}

@code {

    private string APIValue { get; set; }

    protected override async Task OnInitializedAsync()
    {
    }

    private async Task onToggleClick()
    {
        var httpClient = HttpClientFactory.CreateClient("WebAPI");

        //var cookie = await CookieService.GetCookieValue("YourCookieName");

        // httpClient.DefaultRequestHeaders.Authorization =
        //             new AuthenticationHeaderValue("Bearer", cookie);

        try
        {
            APIValue = await httpClient.GetFromJsonAsync<string>("TestData");
        }
        catch (HttpRequestException ex) // Non success
        {
            Console.WriteLine("An error occurred.");
            APIValue = $"error {ex.Message}";
        }
        catch (NotSupportedException) // When content type is not valid
        {
            Console.WriteLine("The content type is not supported.");
        }
        catch (JsonException) // Invalid JSON
        {
            Console.WriteLine("Invalid JSON.");
        }
    }
}

我一直看到错误:

未找到网址为:https://localhost:44309/api/testdata的网页

我错过了什么让它工作吗？

我还没有控制器上的授权属性，因为我只是要在没有登录的情况下首先测试它.

谢谢