Angular 4.3.3 HttpClient：如何从响应的标头获取值？

您可以观察到完整的响应，而不仅仅是内容。为此，您必须传递

observe: response

options

http  .get<MyJsonData>('/data.json', {observe: 'response'})  .subscribe(resp => {    // Here, resp is of type HttpResponse<MyJsonData>.    // You can inspect its headers:    console.log(resp.headers.get('X-Custom-Header'));    // And access the body directly, which is typed as MyJsonData as requested.    console.log(resp.body.someField);  });