if(rootObj.contains("Plan"))
QJsonObject subObj = rootObj.value("Plan").toObject();
qDebug() << subObj.value("enlem").toString();
qDebug() << subObj.value("boylam").toString();
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Half good!
With Json, you have to know the structure of the document you want to read.
Qt gives you some classes to help you:
QJsonDocument
to read/write a full Json entity
QJsonValue
: encapsulates a JSON value
QJsonObject
: encapsulates a JSON object
QJsonArray
: encapsulates a JSON array
So you start with parsing the JSON string with
QJsonDocument::fromJson()
, then get the Root item with:
QJsonDocument::toObject() if root is an object (like in your example)
QJsonDocument::toArray() if root is an array
Then go through the structure:
Your root object has one value called "Plan" with hold an array:
QJsonArray planArray = root.value("plan").toArray();
And the got through the array items
for(const auto &value : planArray )
QJsonObject object = value.ToObject();
Hope this helps.
@suslucoder said in How to parse such a complex json file:
Since i have 2 root in my planArray, i want to achieve them differently.
I don't understand this?!?
A JSON document can only have one root element: an object (which can have multiple values) or an array (which can have multiple objects).
@suslucoder The "Plan" array is a little unusual because the objects it contains are not all of the same structure. Usually, arrays should contain a sequence of elements of the same type. However, it is legal JSON.
If you are certain that the first element of the "Plan" array will have the structure as in your example above, you can perhaps rely on the others to all have the 2nd type structure. Otherwise, you might need to check for the existence of certain keys -- for example, by using the function QJsonObject::contains() to determine which kind of object it is.
