How to post list of QString to HTTP sever

zhmh

I can post one data to server

QNetworkRequest request(QUrl("http://site.com/api/PtData/"));   request.setHeader(QNetworkRequest::ContentTypeHeader,QVariant("application/json"));
    QByteArray const data( "\"152,2019/05/14,08:38:21\"");
    QNetworkAccessManager nam;
    QNetworkReply *reply = nam.post(request, data);

now I want to post a list of data from text file like:

"102,2019/05/15,08:38:21" "153,2019/05/15,08:38:21" "154,2019/05/15,08:38:21" "155,2019/05/15,08:38:21" ......

I wrote this code but in post() should be const qbytearray ,how can I fix this?

QNetworkRequest request(QUrl("http://site.comr/api/PtData"));
   request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
   QFile file_obj(":/new/prefix1/2.txt");
   if(!file_obj.open(QIODevice::ReadOnly)){
       qDebug()<<"Failed to open ";
   }

   QTextStream file_text(&file_obj);
  QString  json_string =file_text.readAll();
   file_obj.close();
   QStringList values = json_string.split(" ");
   QNetworkAccessManager nam;
   for(int u=0;u<20;u++){
   QNetworkReply *reply =nam.post(request,  values.at(u));
.
.
.
 }
}

fcarney

https://doc.qt.io/qt-5/qstring.html#toUtf8

values.at(u).toUtf8()
also:
for(int u=0;u<values.count();u++)

Pablo J. Rogina

@zhmh said in How to post list of QString to HTTP sever:

I want to post a list of data from text file like:

Are you supposed to post a request per item or just only one request with the whole list?

If the first is true, go with you have now (paying attention to @fcarney advice).

If the latter is true, then you need to construct a JSON object (since you're stating "Content-Type" is JSON...) from the list and send that in the only request

zhmh

@Pablo-J.-Rogina how should I to construct a JSON object from the list?can you show an example for the latter?

fcarney

https://doc.qt.io/qt-5/qjsondocument.html#JsonFormat-enum

QString json_string = "one,two,three,four,five,six";
QByteArray joutput = QJsonDocument(QJsonArray::fromStringList(json_string.split(","))).toJson(QJsonDocument::Compact);

Output:

["one","two","three","four","five","six"]

Spend some time in the json docs. There are a few objects in there to be aware of.

Pablo J. Rogina

@zhmh documentation is your friend...

zhmh

@fcarney @Pablo-J-Rogina tnx