send GET request with json body in flutter

Question

I need to send a GET request to an API from my flutter application, with json parameters in the body. I've googled it (maybe I've not googled it so well), But a lot of people have this problem of sending a GET request with JSON body in flutter. When I try the request in POSTMAN it work.

var url = 'linkofapi;


var response = await http.get(url);

Answer 1

See, first of all, GET operations are not intended to send the data. It is meant to receive the data, hence the method name GET , hence http.get() doesn't have a body .

If sending the data is the utmost requirement, then you need to use Uri to add a query parameter to the http method.

Please read about Uri.http flutter for more information.

You can do something like this to achieve what you want:

// Please note "...." for more information, please do not use this as is
// Just wanted to give a heads up
final query = {
  'name': your_name,
  'email': your_email,
  'password': your_password
  ...
};

var url = 'linkofapi;

// Now you use the query to pass it to. your get method
final uri = Uri.http(url, '/path', query);
// adding headers to the query
final header = {HttpHeaders.contentTypeHeader: 'application/json'};
// doing the operation finally
final response = await http.get(uri, headers: header);

Answer 2

Try this

Future<http.Response> createUser({name, email, password, gender, dob}) {
  return http.get(
    'http://$BASE_API_URL/users',
    headers: <String, String>{
      'Content-Type': 'application/json; charset=UTF-8',
    },
    body: jsonEncode(<String, String>{
      'name': name,
      'email': email,
      'password': password,
      'gender': gender,
      'dob': dob,
    }),
  );
}