We use dart's built-in HttpClient to call HTTP API:
HttpClient httpClient = HttpClient();
HttpClientRequest request = await httpClient.getUrl(uri);
// ...
But using dio to do so is much easier. If you are Python developer, thinking this as the built-in urllib vs the requests lib. The latter one is much easier to use.
Let's do a quick demo of using thsi dio package.
1, Create a folder named "diotest", then create the pubspec.yaml file:
name: diotest
environment:
sdk: '>=2.10.0 <3.0.0'
2, Install the dio package:
$ dart pub add dio
3, Create main.dart and write code like this:
import 'package:dio/dio.dart';
void main() async {
BaseOptions options = BaseOptions(
baseUrl: "https://httpbin.org",
connectTimeout: 3000,
receiveTimeout: 3000,
);
Dio dio = Dio(options);
try {
Response resp = await dio.get(
"/get",
queryParameters: {"search": "dio"},
);
print("Response:");
print("Status:\n${resp.statusCode}");
print("Header:\n${resp.headers}");
print("Data:\n${resp.data}");
} catch (e) {
print("Exception: $e");
}
}
All set, now just run it:
$ dart main.dart
Response:
Status:
200
Header:
connection: keep-alive
access-control-allow-credentials: true
date: Fri, 17 Dec 2021 04:50:26 GMT
access-control-allow-origin: *
content-length: 306
content-type: application/json
server: gunicorn/19.9.0
Data:
{args: {search: dio}, headers: {Accept-Encoding: gzip, Host: httpbin.org, User-Agent: Dart/2.14 (dart:io), X-Amzn-Trace-Id: Root=1-61bc1712-57909160379aeca870fa551c}, origin: 67.83.137.85, url: https://httpbin.org/get?search=dio}
For more on sending POST / PUT / DELETE / Upload Files, you can just visit the example page
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