[英]flutter: DioError [DioErrorType.response]: XMLHttpRequest error
[英]DioErrorType.RESPONSE invalid media type
我的 flutter 项目在 android 上运行良好,但是在尝试将其安装到 web 时我遇到了一些麻烦。 我正在使用Graphql Faker作为假后端,它适用于 android 但对于 flutter Z2567A5EC9705EB7AC2C984033E06 它总是在下面抛出错误89DZ6
╔╣ Request ║ POST
║ http://localhost:9002/graphql
╚══════════════════════════════════════════════════════════════════════════════════════════
╔╣ DioError ║ Status: 500 Internal Server Error
║ http://localhost:9002/graphql
╚══════════════════════════════════════════════════════════════════════════════════════════
╔ DioErrorType.RESPONSE
║ {
║ errors: [{message: invalid media type}]
║ }
╚══════════════════════════════════════════════════════════════════════════════════════════
下面是客户端的外观
GraphQLClient graphQLClient() {
final dio = Dio(
BaseOptions(
connectTimeout: 3 * 1000,
contentType: 'application/json',
),
);
final host = () {
try {
if (Platform.isAndroid) return MY_IP;
} catch (_) {}
return 'localhost';
}();
final graphqlEndpoint = 'http://$host:9002/graphql';
final WebSocketLink _wsLink = WebSocketLink('ws://$host:4000/graphql');
final Link _dioLink = DioLink(
graphqlEndpoint,
client: dio,
);
// split request based on type
final _link = Link.split(
(request) => request.isSubscription,
_wsLink,
_dioLink,
);
return GraphQLClient(
cache: GraphQLCache(),
link: _link,
);
}
任何解决此问题的评论/答案将不胜感激
这看起来像 CORS 错误,graphql-faker 文档有一个关于 cors 的部分:
--cors-origin CORS: Specify the custom origin for the Access-Control-Allow-Origin header, by default it is the same as Origin header from the request
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.