how send put requests in flutter?

Question

I am trying to update my json list on https://app.jsonstorage.net/

but i got response code 415 here is my code:

and this is my json on jsonstorage:

[{"username": "Amirhossein", "password": "302940101692", "email": "sahosseini1382@gmail.com", "phone": "09944236807"},{"username": "Hosna", "password": "74610945", "email": "hosseiniamir71@gmail.com", "phone": "09353792083"}]

Answer 1

Try to add a header to your request:

Response resPut = await put (postur1, 
    body: jsonEncode(<String, String>{
        "username": username,
        "password": password,
        "email": email,
        "phone": phone
        },
    headers: {
          "Accept": "application/json",
          "content-type": "application/json"
        }
    )
);