CODEWITHSUNDEEP
flutterdartdart-http
UndercoverCoder
UndercoverCoder

Reputation: 1013

Is it possible to make a GET request with a body in Flutter?

I made an API that reads data from a database based on a given id via a GET request.

It gets some data where id equals some integer.

I want to call this API in Flutter using package:http/http.dart but the GET request doesn't allow me to enter a request body (where I would pass in the id).

I've Googled and Googled to no avail (I may just be googling the wrong thing). I tried changing my API to a POST rather than GET, which works, but I feel it defeats the purpose of GET.

Here is how I do it using POST:

String url = "http://example.com/api/v1";
Map<String, String> headers = {"Content-type": "application/json"};

String json = '{"id": 1}';

Response response = await post(url, headers: headers, body: json);

But can I achieve this with GET in Flutter?

Upvotes: 2

Views: 11630

Answers (2)

creativecreatorormaybenot
creativecreatorormaybenot

Reputation: 127024

You can use the Request class for this:

final request = Request('GET', 'http://example.com/api/v1');

request.body = '{"id": 1}';

final response = request.send().stream.first;

Alternatively, you can also use idiomatic syntax, i.e. standard procedure, and provide your parameter in the URI:

await get('http://example.com/api/v1?id=1', headers: headers, body: json);

Upvotes: 4

Ephenodrom
Ephenodrom

Reputation: 1893

There is a dart package that provides some helper classes for http requests.

Github : https://github.com/Ephenodrom/Dart-Basic-Utils

Install it with:

dependencies:
  basic_utils: ^1.5.1

It is also part of the EZ-Flutter Collection :

Github : https://github.com/Ephenodrom/EZ-Flutter Docs : https://ez-flutter.de/docs

dependencies:
  ez_flutter: ^0.2.5

In your case, you can't send a body within a GET request. You have to set the id in the url you are calling. Usage

Map<String, String> headers = {
  "Some": "Header"
};
Map<String, String> queryParameters = {
  "Some": "Parameter"
};

String url = "example.com/api/v1/something/;
String id ="100"
url = url + id;


    Map<String, dynamic> reaponseBody;
    try {
        responseBody = await HttpUtils.getForJson(url,
        queryParameters: queryParameters, headers: headers);
    } catch (e) {
        // Handle exception, for example if response status code != 200-299
    }
    // do something with the response body

Additional information :

These are all methods from the HttpUtils class.

Future<Map<Response> getForFullResponse(String url,{Map<String, dynamic> queryParameters,Map<String, String> headers});
Future<Map<String, dynamic>> getForJson(String url,{Map<String, dynamic> queryParameters,Map<String, String> headers});
Future<String> getForString(String url,{Map<String, dynamic> queryParameters,Map<String, String> headers});
Future<Map<Response> postForFullResponse(String url, String body,{Map<String, String> queryParameters,Map<String, String> headers});
Future<Map<String, dynamic>> postForJson(String url, String body,{Map<String, String> queryParameters,Map<String, String> headers});
Future<String> postForString(String url, String body,{Map<String, String> queryParameters,Map<String, String> headers});
Future<Response> putForFullResponse(String url, String body,{Map<String, String> queryParameters,Map<String, String> headers});
Future<Map<String, dynamic>> putForJson(String url, String body,{Map<String, String> queryParameters,Map<String, String> headers});
Future<String> putForString(String url, String body,{Map<String, String> queryParameters,Map<String, String> headers});
Future<Response deleteForFullResponse(String url,{Map<String, String> queryParameters,Map<String, String> headers});
Future<Map<String, dynamic>> deleteForJson(String url,{Map<String, String> queryParameters,Map<String, String> headers});
Future<String> deleteForString(String url,{Map<String, String> queryParameters,Map<String, String> headers});
Map<String, dynamic> getQueryParameterFromUrl(String url);
String addQueryParameterToUrl(String url, Map<String, dynamic> queryParameters);

Upvotes: -1

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