read JSON line by line with QT [duplicate] - c++

Question

This question already has answers here:
Foreach Through QJsonObject to get Key/Value Pair
(2 answers)
Closed 4 years ago.
I have a JSON like this:
{
"09:32 24.09.2018": "456",
"09:56 24.09.2018": "854",
"09:57 24.09.2018": "854",
"09:59 24.09.2018": "853",
"10:00 24.09.2018": "369",
"10:01 24.09.2018": "369"
}
How can I read this line by line in QT5. I would like to write it in a QTableWidget to have "09:32 24.09.2018" in first row / first column, "456" in first row / second column, "09:56 24.09.2018" second row / first column and so on..
My current loading works like this:
QJsonDocument getFile = loadJson("test");
QJsonObject obj = getFile.object();
with:
QJsonDocument MainWindow::loadJson(QString fileName) {
QFile jsonFile(fileName);
jsonFile.open(QFile::ReadOnly);
return QJsonDocument().fromJson(jsonFile.readAll());
}
Thank you.

Answer 1

you can iterate over the QJsonObject to transverse it:
QString val;
QFile file;
//set the file name
file.setFileName("foo.json");
//open the file name
file.open(QIODevice::ReadOnly | QIODevice::Text);
//read the file name
val = file.readAll();
//close the file name
file.close();
//string to json doc
QJsonDocument doc = QJsonDocument::fromJson(val.toUtf8());
//json doc to json object
QJsonObject object = doc.object();
//json object can be iterated
for (auto it = object.begin(), end=object.end(); it != end; ++it)
{
qDebug() << "Key: " << it.key() << "Val: " << it.value();
}