Flutter: Send JSON body for Http GET request

Question

I need to make a GET request to an API from my Flutter app which requires request body as JSON (raw).

I tested the API with JSON request body in Postman and it seems

Answer 1

uri.replace... returns a new Uri, so you have to assign it into a new variable or use directly into the get function.

final newURI = uri.replace(queryParameters: params);

var response = await http.get(newURI, headers: {
  "Authorization": Constants.APPOINTMENT_TEST_AUTHORIZATION_KEY,
  HttpHeaders.contentTypeHeader: "application/json",
  "callMethod" : "DOCTOR_AVAILABILITY"
});

using post:

      var params = {
        "doctor_id": "DOC000506",
        "date_range": "25/03/2019-25/03/2019" ,
        "clinic_id":"LAD000404"
      };

      var response = await http.post("http://theapiiamcalling:8000", 
      body: json.encode(params)
      ,headers: {
        "Authorization": Constants.APPOINTMENT_TEST_AUTHORIZATION_KEY,
        HttpHeaders.contentTypeHeader: "application/json",
        "callMethod" : "DOCTOR_AVAILABILITY"
      });