How do I create JSON array using QT

Question

I want store my datas in JSON file like:

{
    \"plottingData\": [
        {
            \"min\": 17,
            \"max\": 35,
            \"mean\": 20

             


        

Answer 1

 QJsonObject o1
 {
     { "min", 17 },
     { "max", 35 },
     { "mean", 20 },
 };
 QJsonObject o2;
 o2 [ "min" ] = 7;
 o2 [ "max" ] = 35;
 o2 [ "mean"] = 17;

 QJsonArray arr;
 arr.append ( o1 );
 arr.append ( o2 );

 QJsonObject obj;
 obj [ "plottingData" ] = arr;

 //to see the JSON output
 QJsonDocument doc ( obj );
 qDebug() << doc.toJson ( QJsonDocument::Compact );  // or QJsonDocument::Indented
 // output: "{\"plottingData\":[{\"max\":35,\"mean\":20,\"min\":17},{\"max\":35,\"mean\":17,\"min\":7}]}"