Error parsing or generating json

QJsonObject,QJsonDocument,The following is an error code demonstration：

QJsonObject jo;

jo["id"]=431536871475019777;

qDebug()<<jo<<jo.value("id").toVariant().toLongLong(); //This will output：QJsonObject({"id":431536871475019800}) 431536871475019776，The value is different

//-------------------------------------------

Looking at the QJsonValue code, I found that it was converted to a double type, so there was a precision problem

QJsonValue::QJsonValue(qint64 n) : d(0), t(Double)

{

this->dbl = double;

}