Flutter - How to send a POST request using HTTP in Dart?

Checked the following code which worked for me.

Future<Album> createAlbum(String html) async {  final http.Response response = await http.post(    'https://www.html2json.com/api/v1',    headers: <String, String>{      'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',    },      body: html,  );

You need to change the Content-type to application/x-www-form-urlencoded; charset=UTF-8. This should do the trick.

Thanks to DARSH SHAH, I solved this using dio (https://pub.dev/packages/dio).

dynamic response;  Dio dio = Dio();  Future<dynamic> test() async {    dynamic link = await dio.get(        'https://example.com');    return link;  }  Future<dynamic> post(dynamic body) async {    String _baseUrl = "https://html2json.com/api/v1";    var options = Options(      contentType: "application/x-www-form-urlencoded; charset=UTF-8",      followRedirects: false,    );    final response = await dio.post(      _baseUrl,      data: body,      options: options,    );    return response;  }FloatingActionButton(        onPressed: () async {          dynamic responseHTML = await test();          response = await post(responseHTML.data); //This will contain the JSON response        },);