Dart Convert HTML to JSON - flutter

Question

The official Turkey's Dictionary has some kind of json request system but the response it gave is HTML, not JSON.
Example:
https://sozluk.gov.tr/gts?ara=kalem
I'm trying to convert this HTML to JSON but couldn't make it. When I use html plugin on Flutter it gives me some kind of #document every time.
var sozlukurl = await http.Client()
.get(Uri.parse('https://sozluk.gov.tr/gts?ara=$ceviri'));
print(sozlukurl);
var sozlukapibody = parse(sozlukurl.body);
print(sozlukapibody);
var decoded = json.decode(sozlukapibody.toString());
var sozlukbilgi = jsonDecode(utf8.decode(decoded.bodyBytes)) as Map;
var sozlukanlam = sozlukbilgi['anlamlarListe'][0]['anlam'];
print(sozlukanlam);
Output from sozlukurl:
I/flutter ( 5350): Instance of 'Response'
Output from sozlukapibody:
I/flutter ( 5350): #document
Final Error:
FormatException (FormatException: Unexpected character (at character 1)
#document
^
)
How can i solve this problem?

Answer 1

It returns a json with an array encapsulating it. For your particular example jsonDecode should work fine, just take index 0 of the array to access the json.
var res = await http.Client()
.get(Uri.parse('https://sozluk.gov.tr/gts?ara=kalem'));
var body = res.body;
var decoded = jsonDecode(body);
var json = decoded[0];
var sozlukanlam = json["anlamlarListe"][0]["anlam"];
print(sozlukanlam);
I tried it on DartPad and not on an actual app however.