Dart: HTTP GET with Header

Question

我正在创建一个使用LIFX的Flutter应用程序。我正在尝试遵循他们的说明here，但是我在向HTTP GET请求添加头部时遇到了问题。

TestHttpGet() async {
  var httpClient = new HttpClient();
  var header = "Bearer $token"; //token hidden
  var url = 'https://api.lifx.com/v1/lights/all/state';

  String result;
  try {
    var request = await httpClient.getUrl(Uri.parse(url));
    request.headers.set("Authorization", header);
    var response = await request.close();
    if (response.statusCode == HttpStatus.OK) {
          var json = await response.transform(UTF8.decoder).join();
          print(json);
          var data = JSON.decode(json);
          result = data['brightness'].toString();
        } else {
          result =
              'Error getting response:\nHttp status ${response.statusCode}';
        }
      } catch (exception) {
        result = 'Failed parsing response';
      }

这与Error getting response: Http status 404一起返回。我尝试过request.headers .set .add [HttpHeaders.Authorization] = "header"的各种方法，结果都是404。任何建议都将不胜感激。

Answer 1

您可以将Map<String, String>作为headers参数传递给http.get调用，如下所示：

await httpClient.get(url, headers: {
  'Authorization': 'Bearer $token',
});

Answer 2

我相信dart使HttpHeader的所有字段都是小写的。

https://github.com/flutter/flutter/issues/16665

这样做的理由是“字段名不区分大小写”。(否则它不符合HTTP )

https://www.rfc-editor.org/rfc/rfc2616#section-4.2

如果您找到了解决此问题的方法，请告诉我。