Qt post request

Raii

I'm new to qt .I want to send 2 strings with post request but I couldn't find too many examples, do you have a sample or code?

SGaist

Then write the methods that will marshal and unmarshal your classes to/from text. You can write QDataStream operators.

SGaist

Hi,

Do you mean QNetworkAccessManager::post ?

Raii

yes we are doing a joint project with my friend, he wants 2 strings from me, I have to post them
I need to put 2 string in (class)model and send them

SGaist

Please describe your exact setup.

Because you could send these two strings as JSON data in one request, or split that in two.

Raii

I got it but I have a question for you
Why should I use QByteArray for post in Qt? Can't I use a direct class object instead?
QNetworkReply * post(const QNetworkRequest &request, QIODevice *data)
QNetworkReply * post(const QNetworkRequest &request, const QByteArray &data)
QNetworkReply * post(const QNetworkRequest &request, QHttpMultiPart *multiPart)

JonB

@Raii
You want to post a class object across the network? It doesn't make sense. You can post e.g. a QByteArray, you could think about serializing the object to bytes (e.g. see QDataStream) and deserialize at the other end, but not sure what you're trying to achieve.

jsulm

@Raii said in Qt post request:

Why should I use QByteArray for post in Qt?

Because network layer sends bytes over network, it does not know anything about your classes (but you can serialise/deserialise your classes as @JonB mentioned).
But nothing stops you from converting your string into byte array:
https://doc.qt.io/qt-5/qstring.html#toLatin1
https://doc.qt.io/qt-5/qstring.html#toLocal8Bit
https://doc.qt.io/qt-5/qstring.html#toUtf8
Which method to use depends on the encoding of your string and what encoding you want to use to send the data.

Raii

@JonB

I can send it in c # windows form code example


class sendEmailAll
{


public String title { get; set; }
public String message { get; set; }

    public void sendMessage(sendEmailAll message) //send to class object 
    {
        using (var client = new HttpClient())
        {
            client.BaseAddress = new Uri("http://192.168.1.33:8081");
            client.DefaultRequestHeaders.Accept.Clear();
            HttpResponseMessage response = client.PostAsJsonAsync("/email/sendAll", message).Result; 
            
          // message is class object

        }
    }
}

JonB

@Raii
And your point is what? You are using PostAsJsonAsync. I think someone earlier said you can convert to JSON, which is what this is doing. @SGaist wrote

Because you could send these two strings as JSON data in one request, or split that in two.

Raii

@JonB @SGaist
i need these two
i will pull the get as json and throw it into the model
I will also send a post, sometimes a parameter and sometimes a direct model

SGaist

Then write the methods that will marshal and unmarshal your classes to/from text. You can write QDataStream operators.