Angular2的Http.post在POST方法调用的响应中未返回标头

我正在呼叫REST端点.我想添加一个资源(如下). 但是，当我的服务调用Http的post方法时，它将调用请求，但不会返回响应的标头.至少，我遇到了一个Response实例的空标题对象. (??) 我确实期望响应头.特别是，我希望Location标头是"REST ADD RESOURCE"模式的一部分. Location标头包含新创建的资源的URL.

I am doing a call to a REST endpoint. I want to add a resource (below). However, when my service calls Http's post method it will invoke the request but the response's header(s) are not returned. At least, I experience an empty headers object of the Response instance. (??) I do expect response header. In particular I expect the Location header as part of a "REST ADD RESOURCE" pattern. The Location headers contains the URL of the newly created resource.

这很奇怪:当我直接调用我的API(因此不是通过Angular2)时，我得到了准确的响应，但是这次是(所有)期望的标头，包括Location响应标头.

The weird thing about this: when I call my API directly (thus not via Angular2), I get the exact response but this time with (all) expected headers including the Location response header.

嗯，Http.post出问题了吗?还是我做错了什么?

Uhh, is there something wrong with Http.post or am I doing something wrong?

提醒您:在此示例中，我的服务返回了可观察到的响应".这不是返回给调用者的预期类类型.我使用它的目的是为了方便了解发帖后的情况.实际上，我打算传递存储在Location标头中的url.

Mind you: My service returns an Observable Response in this example. This is not the intended class type to return to the caller. I am using it for the convenience of understanding what is happening with the post response. In reality it is my intention to pass the url stored in the Location header.

addModel(model: any): Observable<Response> {
let token = this.loginService.auth.accessToken;
let headers = new Headers({
  'Content-Type': 'application/json',
  'Accept': 'application/json',
  'Authorization': `Bearer ${token}`
});
let options = new RequestOptions({headers: headers});
let data: string = JSON.stringify(model);
return this.http.post(this.url, data, options)

  // .map(r => {
  //   console.log("Response ", r);
  //   return r.headers.get("Location"); // THERE IS NOTHING IN headers (?). Don't understand.
  // })
  .catch(err => Observable.throw(err));
 }