来自web api控制器的角6响应“字符串”

this.http.get("https://localhost:44354/api/home/5",{responseType: 'text' })
  .subscribe(result => { console.log(result); });

在控制台中 result 我明白了

SyntaxError:输入意外结束
在app component.push../src/app/app.component.ts.AppComponent.setTitle( http://localhost:4200/main.js:137:14
在Object.eval[作为handleEvent](ng:///AppModule/AppComponent.ngfactory.js:13:27)
手边通风口( http://localhost:4200/vendor.js:67178:41
在callWithDebugContext( http://localhost:4200/vendor.js:68272:25 )
位于Object.debugHandleEvent[作为handleEvent]( http://localhost:4200/vendor.js:67975:12 )
http://localhost:4200/vendor.js:64627:25 )
在 http://localhost:4200/vendor.js:65074:38
在htmlButtoneElement。( http://localhost:4200/vendor.js:74051:36
在ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask( http://localhost:4200/polyfills.js:2766:31 )
http://localhost:4200/vendor.js:61652:33 )

如何强制角6识别字符串?

启动.cs

    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            app.UseCors(builder => builder.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin().AllowCredentials());
            app.UseMvc();
        }
    }

应用组件

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {

  responsText: string;

  constructor(private http: HttpClient) {
  }

  setTitle(): void {
    this.http.get("https://localhost:44354/api/home/5",{responseType: 'text' })
      .subscribe(result => { console.log(result); });
    debugger;
  }
}

[Route("api/[controller]")]
public class HomeController : Controller
{
    // GET api/<controller>/5
    [HttpGet("{id}")]
    public string Get(int id)
    {
        return "value";
    }
}