如何在flutter graphql调用中发送cookie

在Flutter中使用GraphQL调用发送Cookie，可以通过以下步骤实现：

导入所需的依赖：在Flutter项目的pubspec.yaml文件中添加graphql_flutter和http依赖。

dependencies:
  flutter:
    sdk: flutter
  graphql_flutter: ^4.0.0
  http: ^0.13.3

创建GraphQL客户端：使用graphql_flutter库创建一个GraphQL客户端，用于与服务器进行通信。

import 'package:graphql_flutter/graphql_flutter.dart';

final HttpLink httpLink = HttpLink('YOUR_GRAPHQL_ENDPOINT');

final ValueNotifier<GraphQLClient> client = ValueNotifier<GraphQLClient>(
  GraphQLClient(
    link: httpLink,
    cache: GraphQLCache(),
  ),
);

发送GraphQL请求：使用创建的GraphQL客户端发送GraphQL请求，并在请求头中添加Cookie。

import 'package:http/http.dart' as http;

final String cookie = 'YOUR_COOKIE_VALUE';

final http.Client httpClient = http.Client();

final http.Request request = http.Request('POST', Uri.parse('YOUR_GRAPHQL_ENDPOINT'));
request.headers.addAll({'Cookie': cookie});

final http.StreamedResponse response = await httpClient.send(request);

final String responseBody = await response.stream.bytesToString();

处理响应：根据需要处理GraphQL响应。

final QueryResult result = await client.value.query(QueryOptions(
  document: gql('YOUR_GRAPHQL_QUERY'),
));

if (result.hasException) {
  print(result.exception.toString());
} else {
  print(result.data.toString());
}

请注意，上述代码示例中的YOUR_GRAPHQL_ENDPOINT应替换为您的GraphQL服务器端点，YOUR_COOKIE_VALUE应替换为您要发送的Cookie的值，YOUR_GRAPHQL_QUERY应替换为您的GraphQL查询。

关于GraphQL和Flutter的更多信息，您可以参考以下链接：