Correct way to post JSON data/payload (to a FastAPI python server app) about cpr

[COM8]

May I suggest:

int main() {
    // Setup curl share
    cpr::Response postRequest = cpr::Post(cpr::Url{"http://127.0.0.1:8000/items"},
                                          cpr::Header{{"Content-Type", "application/json"}},
                                          cpr::Body{R"({ "vorname": "Olaf", "nachname": "Ralf", "alter": 42, "gewicht": 24 })"});
    std::cout << postRequest.text << std::endl;

    return 0;
}

The first one is invalid since there you send the numbers as string and the second example misses the { and }.

[TuxxuT]

Thank you so much! Problem solved.

[TuxxuT]

This also does not work:

std::string json_data{" \"vorname\": \"string\", \"nachname\": \"string\", \"alter\": 0, \"gewicht\": 0 "};

    // POST REQUEST
    cpr::Response postRequest = cpr::Post(cpr::Url{"http://127.0.0.1:8000/items"},
                    cpr::Header{{"Content-Type", "text/plain"}},
                   cpr::Body{json_data});
    std::cout << postRequest.text << std::endl;

    }