如何发送一个GET请求与一个数组作为参数?

Question

我试图创建一个函数来使用查询参数进行GET。我正在处理Mangadex API，并发送一个名为"manga"的参数作为数组。我创建的代码如下:

Future<http.Response> getCoverArtResponse(String mangaID) async {
var queryParameters = {
'limit': '10',
'manga': [mangaID] //Here
};
var unencodedPath = '/cover';
var response = await http.get(
Uri.https(authority, unencodedPath, queryParameters),
headers: {HttpHeaders.contentTypeHeader: 'application/json'});
return response;
}

但是，响应是以下错误:

{"result":"error","errors":[{"id":"9c346772-7b14-5982-b4b6-7b5888522762","status":400,"title":"validation_exception","detail":"Error validating /manga: String value found, but an array is required","context":null}]}

我应该如何发送参数?到目前为止，我已经试过了-

'manga': [mangaID]
'manga': '[$mangaID]'

它们似乎都不起作用。

Answer 1

import 'dart:async';
import 'package:wnetworking/wnetworking.dart';
class MangaDex {
static const _base = 'https://api.mangadex.org';
static FutureOr<void> _getter({required String url, required Function(JMap item, int idx) onItem}) async {
await HttpReqService.getJson<JMap>(url)
.then((response) {
var results = response?['results'];
if (results != null) {
if (results is List) {
var i = 0;
results.forEach((manga) => onItem(manga, ++i));
} else {
print(response);
}
}
});
}
static FutureOr<void> cover({int limit = 10, int offset=0, String? mangaId, String? coverId}) async {
final mangas = mangaId != null ? '&manga[]=$mangaId' : '';
final covers = coverId != null ? '&ids[]=$coverId' : '';
final url = '$_base/cover?limit=$limit&offset=$offset$mangas$covers';
await _getter(
url: url, 
onItem: (item, idx) {
print('$idx) "${item['data']?['attributes']?['fileName']}"');
print('   id: ${item['data']?['id']}n');
},
);
}
}
void main(List<String> args) async {
await MangaDex.cover(mangaId: '32d76d19-8a05-4db0-9fc2-e0b0648fe9d0', limit: 2);
print('nJob done');
}

结果:

1) "f5873770-80a4-470e-a11c-63b709d87eb3.jpg"
id: b6c7ce9c-e671-4f26-90b0-e592188e9cd6
2) "e9f926db-b469-48c4-8cc4-a8e523ad75ca.jpg"
id: 00aae6e0-46bb-4f92-a82a-1c740789b704

Job done

将wnetworking包替换为http包，将JMap包替换为Map<String, dynamic>包

注意: MangaDex文档缺乏并且误导了如何正确使用其端点。