无法通过角度组件调用控制器

Question

我正在尝试使用.Net Core进行Angular操作，但在从组件调用api控制器时遇到麻烦：

我用带有虚假数据的Postman打电话给我的控制器，以检查它是我的应用程序还是控制器，并且控制器一切正常，所以问题出在我的应用程序上。

我花了很多时间在尝试许多事情上（创建另一个“服务”组件或在组件中，构造函数中，ngInit中，两个外部都直接使用httpclient等），现在我真的卡住了...在我能找到的所有httpClient示例上，什么都没有告诉我我的呼叫错了，所以我听不懂...

当我尝试调试（chrome上的资源管理器）时，我可以到达httpClient调用，URL很好（与邮递员相同），但是它是黑匣子，只有匿名函数，但是我仍然可以看到“用户列表”在http.get（）。subsrcibe（）之后未定义；

startup.cs

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllersWithViews();
            // In production, the Angular files will be served from this directory
            services.AddSpaStaticFiles(configuration =>
            {
                configuration.RootPath = "ClientApp/dist";
            });

            services.RegisterServiceServices();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory)
        {
            app.UseExceptionHandler("/default");
            // 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();
            if (!env.IsDevelopment())
            {
                app.UseSpaStaticFiles();
            }

            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller}/{action=Index}/{id?}");
            });

            app.UseSpa(spa =>
            {
                // To learn more about options for serving an Angular SPA from ASP.NET Core,
                // see https://go.microsoft.com/fwlink/?linkid=864501

                spa.Options.SourcePath = "ClientApp";

                if (env.IsDevelopment())
                {
                    spa.UseAngularCliServer(npmScript: "start");
                }
            });

            loggerFactory.AddFile("logs/Log_" + DateTime.Today.ToString()+".txt");
        }

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { RouterModule } from '@angular/router';

import { AppComponent } from './app.component';
import { HeaderComponent } from './header/header.component';
import { FooterComponent } from './footer/footer.component';
import { HomeComponent } from './content/home/home.component';

@NgModule({
    declarations: [
        AppComponent,
        HeaderComponent,
        FooterComponent,
        HomeComponent
    ],
    imports: [
        BrowserModule.withServerTransition({ appId: 'ng-cli-universal' }),
        HttpClientModule,
        FormsModule,
        ReactiveFormsModule,
        RouterModule.forRoot([
            { path: '', component: HomeComponent, pathMatch: 'full' },
            { path: 'home', component: HomeComponent },
        ])
    ],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }

home.component.ts

import { Component, Injectable } from '@angular/core';
import { user } from '../../../model/test/user';
import { Observable } from 'rxjs';
import { HttpClient } from '@angular/common/http';

@Component({
    selector: 'home',
    templateUrl: './home.component.html',
})
@Injectable()
export class HomeComponent {

    public userlist: user[];
    constructor(private httpClient: HttpClient) {
        var base_url: string = window.location.origin;
        var controller: string = base_url + "/svc/Test/GetUserList";
        var userlistresult = this.httpClient.get<user[]>(controller).subscribe((data: any[]) => {
            console.log(data);
            this.userlist = data;
        });
    }
}

user.ts //使用与.cs类相同的大小写，以确保不是原因

export interface user {
    UserName: string;
    FirstName: string;
    LastName: string;
}

TestController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Business.Interfaces;
using Newtonsoft.Json;
using Models.Test;
using Microsoft.AspNetCore.Mvc;

namespace AnguTest.Controllers
{
    [ApiController]
    [Route("svc/Test")]
    public class TestController : ControllerBase
    {
        #region Attributes
        private ITestService TestService;
        #endregion

        #region Constructor
        public TestController(ITestService testService)
        {
            TestService = testService;
        }
        #endregion

        #region Methods
        [HttpGet]
        [Route("GetUserList")]
        public JsonResult GetUserList()
        {
            User[] totos = new User[]
            {
                new User(){UserName = "toto1", FirstName = "tata1", LastName = "titi1"},
                new User(){UserName = "toto2", FirstName = "tata2", LastName = "titi2"},
                new User(){UserName = "toto3", FirstName = "tata3", LastName = "titi3"}
            };
            return new JsonResult(totos);
            //return new JsonResult(TestService.GetUserList());
        }
        #endregion
    }
}

欢迎任何帮助：）