我正在尝试使用 Dart 的http
库来发出简单的 HTTP GET 和 POST 请求:
import 'package:http/http.dart' as http;
import 'package:http/src/response.dart';
void main() {
String json = getSomeJSONString();
http.post(url, body: json, encoding: Encoding.getByName("UTF-8")).then(onResponse);
}
void onResponse(Response response) {
// Do something
}
当我运行它时,pub build
我得到:
[Dart2JS on myapp-client|web/myapp_client.dart]:Building myapp-client......
[Dart2JS on myapp-client|web/myapp_client.dart]:
../../../../../sandbox/workbench/dart/dart/dart-sdk/lib/core/uri.dart:1133:17: Info: This is the method declaration.packages/http/src/utils.dart:41:42: Warning: Arguments do not match the expected parameters of 'encodeQueryComponent'.
static String encodeQueryComponent(String component) {
^^^^^^^^^^^^^^^^^^^^
[Dart2JS on myapp-client|web/myapp_client.dart]:pairs.add([Uri.encodeQueryComponent(key, encoding: encoding),
../../../../../sandbox/workbench/dart/dart/dart-sdk/lib/core/uri.dart:1133:17: Info: This is the method declaration.
static String encodeQueryComponent(String component) {
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[Dart2JS on myapp-client|web/myapp_client.dart]:
packages/http/src/utils.dart:42:42: Warning: Arguments do not match the expected parameters of 'encodeQueryComponent'.
Uri.encodeQueryComponent(value, encoding: encoding)]));
^^^^^^^^^^^^^^^^^^^^^^^^^^^
[Dart2JS on myapp-client|web/myapp_client.dart]:
packages/http/src/utils.dart:41:58: Warning: No named argument 'encoding' found on method.
pairs.add([Uri.encodeQueryComponent(key, encoding: encoding),
^^^^^^^^
[Dart2JS on myapp-client|web/myapp_client.dart]:
packages/http/src/utils.dart:42:60: Warning: No named argument 'encoding' found on method.
Uri.encodeQueryComponent(value, encoding: encoding)]));
^^^^^^^^
[Info in Dart2JS]:
Generated myapp-client|web/myapp_client.dart.js (246641 characters) in 0:00:09.640230
Built 14 files!
所以有几个问题:
- 这些警告是什么,为什么我会收到它们?
- 我需要做什么才能让他们离开(修复他们)?
http
如果它是 Dart 语言/核心的一部分,为什么我需要将此库作为依赖项包含在内?