mobile - 如何发出经过身份验证的 http 请求并返回带有 dart 的对象流？

Question

我必须将 API key 放在请求 header 中:

Authorization: Bearer "YOUR API KEY"

这是我的代码( 我不确定在哪里放置标题以及如何放置 )

Future<Stream<Book>> getBooks() async {
  var url = ‘example_url’

  var client = http.Client();
  var streamedResponse = await client.send(
    http.Request(‘get’, Uri.parse(url))
  );

  return streamedResponse.stream
    .transform(utf.decoder)
    .transform(json.decoder)
    .expand(jsonBody) => (jsonBody as Map)[‘results’] )
    .map((jsonBook) = Book.fromJson(jsonBook));
}

Flutter 文档 https://flutter.io/cookbook/networking/authenticated-requests/说要将此格式用于经过身份验证的请求，但这不适用于流，这将返回对象的 future (书)

Future<Book> fetchPost() async {
  final response = await http.get(
    'https://jsonplaceholder.typicode.com/posts/1',
    headers: {HttpHeaders.authorizationHeader: "Place your_api_token_here"},
  );
  final responseJson = json.decode(response.body);

  return Book.fromJson(responseJson);
}

Answer 1

您可以在创建 Request 后添加自定义标题。

final request = http.Request('GET'), url)
      ..headers.addAll(myHeaders);