json - 如何在 MultipartRequest 中发送数组？

Question

这是我正在使用 postman 作为数组测试我的 api

但是我如何使用 MultipartRequest 发送数组

var uri = Uri.parse(Constants.BASEURL + Constants.KEYEORD_CREATE_TENANACY);
  Map<String, String> headers = {
    "Accept": "application/json",
    "Authorization": token
    };
   var request = new http.MultipartRequest("POST", uri);
   request.headers.addAll(headers);
   request.fields['property_usage'] = property_use;
   request.fields['unit_id'] = unitlist;               // here i want unit_id to array
   var response = await request.send();
   print("Tenancy Add Result: ${response.statusCode}");
    if (response.statusCode == 200) {
     print(response);
    }

Answer 1

'''

request.fields['unit_id[n]'] = "${arrUnitlist[n]}";

或

for(int i = 0; i < arrUnitlist; i++){
  request.fields['unit_id[$i]'] = '${arrUnitlist[i]}';
}

'''

对我有用