QT: parsing JSON

// Used to resolve Jsong data 
void MainWindow::DecodeJson(QString JsonData)
{
       qDebug()<<"--->"<<JsonData.toUtf8();
       QJsonParseError parseJsonErr;
       QJsonDocument document = QJsonDocument::fromJson(JsonData.toUtf8(),&parseJsonErr);
       if(!(parseJsonErr.error == QJsonParseError::NoError))
       {
           qDebug()<<tr(" analysis json file error ！");
           return;
       }
       QJsonObject jsonObject = document.object();
       if(jsonObject.contains(QStringLiteral("data"))){
           qDebug()<<"--->"<<" Dad came in ";
               QJsonValue arrayValue = jsonObject.value(QStringLiteral("data"));
               if(arrayValue.isArray())
               {
                   QJsonArray array = arrayValue.toArray();
                   for(int i=0;i<array.size();i++)
                   {
                       QJsonValue iconArray = array.at(i);
                       QJsonObject icon = iconArray.toObject();
                       QString player_name = icon["player_name"].toString();
                       QString player_type = icon["player_type"].toString();
                       QString player_search = icon["player_search"].toString();
                       qDebug()<<"player_name="<<player_name<<"player_type="<<player_type<<"player_search="<<player_search;
                   }
               }
           }
}