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I have this 2 variables, and I want to convert data to dataToString.
QJSonArray data;
Qstring dataToString;
In data there is a huge json like:
{
"properties": [
{
"version":"1",
"finish":"0",
"num":3,
"running":false,
"time":"00:20:00",
"player1":"John",
"player2":"",
"player3": "Peter",
"player4":"",
"team1":"",
"team2":"",
"tournament":"",
"lap":""
}
],
"game": [
{
"serve":true,
"score":"32",
"data":"0"
}
]
}
How can I do it ? Thanks.
239
You can convert the array to and from text based JSON through QJsonDocument. In other words, all you need to do is this: QJsonArray data; QJsonDocument doc; doc. setArray(data); QString dataToString(doc.
QJsonArray::QJsonArray(std::initializer_list<QJsonValue> args) Creates an array initialized from args initialization list. QJsonArray can be constructed in a way similar to JSON notation, for example: QJsonArray array = { 1, 2.2, QString() }; This function was introduced in Qt 5.4.
Use toObject() to convert to a QJsonObject. The value is undefined. This is usually returned as an error condition, when trying to read an out of bounds value in an array or a non existent key in an object.
To quote the documentation:
You can convert the array to and from text based JSON through QJsonDocument.
In other words, all you need to do is this:
QJsonArray data;
QJsonDocument doc;
doc.setArray(data);
QString dataToString(doc.toJson());
That's all there is to it!
170
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