API can't read body request send by flutter http.post - json

Question

I tried to send a json data which is populated from hive database using flutter as mobile app and API using Laravel, but my API keep saying that the request is empty.
This is my flutter http.post
Future<void> SendDataBacklog() async {
var jsonBacklog = jsonEncode(backlogList);
final response = await http.post(
Uri.parse('http://109.141.122.292/asmankit-api/api/koko/t1a/input/test'),
headers: <String, String>{
'Content-Type': 'application/json; charset=UTF-8',
},
body: jsonBacklog,
);
if (response.statusCode == 200) {
//show your outputs
Hive.box('asmankit_backlog').clear();
AlertPostBerhasil(context);
} else {
print('Backlog data: $jsonBacklog');
print("response backlog: " + response.body);
AlertKoneksiFailed(context);
}
}
This is my json data
[{
"tanggal_catat": "2022-12-08 21:28:18",
"id_mesin": "12",
"hsd": "11",
"rpm": "11",
"tekOli": "11",
"tempMasuk": "11",
"tempKeluar": "11",
"tempMesin": "11",
"r": "11",
"s": "11",
"t": "11",
"kw": "11",
"hz": "11",
"volt": "11",
"cosQ": "11",
"age": "testing| Backlog"
},
{
"tanggal_catat": "2022-12-08 23:22:29",
"id_mesin": "12",
"hsd": "99",
"rpm": "99",
"tekOli": "99",
"tempMasuk": "99",
"tempKeluar": "99",
"tempMesin": "99",
"r": "99",
"s": "99",
"t": "99",
"kw": "99",
"hz": "99",
"volt": "99",
"cosQ": "99",
"age": "testing| Backlog"
}
This is the request response, which say there is no data passed when call the API
response backlog: {"success":false,"message":"Silahkan Isi Data Yang Kosong","data":{"tanggal_catat":["Masukkan Title Post !"],"id_mesin":["Masukkan Title Post !"],"hsd":["Masukkan Content Post !"],"rpm":["Masukkan Content Post !"],"tekOli":["The tek oli field is required."],"tempMasuk":["The temp masuk field is required."],"tempKeluar":["The temp keluar field is required."],"tempMesin":["The temp mesin field is required."],"r":["Masukkan Content Post !"],"s":["Masukkan Content Post !"],"t":["Masukkan Content Post !"],"kw":["Masukkan Content Post !"],"hz":["Masukkan Content Post !"],"volt":["Masukkan Content Post !"],"cosQ":["Masukkan Content Post !"],"kwhProd":["Masukkan Content Post !"],"keterangan":["Masukkan Content Post !"]}}
Last is my flutter mode map toJson
Map<String, String> toJson() => {
'tanggal_catat': waktuCatat,
'id_mesin': idMesin,
'hsd': hsd,
'rpm': rpm,
'tekOli': tekOli,
'tempMasuk': tempMasuk,
'tempKeluar': tempKeluar,
'tempMesin': tempMesin,
'r': r,
's': s,
't': t,
'kw': kw,
'hz': hz,
'volt': volt,
'cosQ': cosQ,
'age': keterangan + "| Backlog",
};

Answer 1

The URL you gave
is not accessible so I am going with your word that it works.
Now since you say print("response backlog: " + response.body); is being hit, that means the if condition of statuscode = 200 is not true.
In general POST requests return a status code of 201 and not 200 when successful. Can you change 200 to 201 and see?