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到options函数调用的参数中。
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);
});
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