如何解析此 JSON 文件?(Qt)

Question

我使用 Qt5.7.1 并尝试读取我的 JSON 文件中的信息。 我的文件的结构包括：配置的名称，神经元的数量，神经元数组(每个神经元都有严格数量的受体和突触，也由数组表示(以及每个神经元的系数值。 我需要获取这些值。 我有这个 JSON 文件：

{
"Task config name": "Test",
"Configuration": {
"NeuronsCount": 2,
"Neurons": [
{
"ReceptorsCount": 3,
"Receptors": [
{
"coef1": 17.32,
"coef2": 11.992,
"coef3": 2.314
},
{
"coef1": 12.982,
"coef2": 96.148,
"coef3": -1.899
},
{
"coef1": 49.11,
"coef2": 35.001,
"coef3": -643.52
}
],
"SynapsysCount": 4,
"Synapses": [
{
"coef1": 13.22,
"coef2": 31.992,
"coef3": 22.314
},
{
"coef1": 12.81,
"coef2": 36.8,
"coef3": -53.189
},
{
"coef1": 1.11,
"coef2": 44.261,
"coef3": -23.12
},
{
"coef1": 642.86,
"coef2": 24.24,
"coef3": 95.009
}
]
},
{
"ReceptorsCount": 3,
"Receptors": [
{
"coef1": 6.32,
"coef2": 64.992,
"coef3": 98.314
},
{
"coef1": 42.982,
"coef2": 11.148,
"coef3": -12.899
},
{
"coef1": 1.11,
"coef2": 752.001,
"coef3": -3.82
}
],
"SynapsysCount": 4,
"Synapses": [
{
"coef1": 19.82,
"coef2": 1.592,
"coef3": 75.384
},
{
"coef1": 89.81,
"coef2": 65.8,
"coef3": -13.189
},
{
"coef1": 18.11,
"coef2": 11.261,
"coef3": -211.12
},
{
"coef1": 2.86,
"coef2": 8.24,
"coef3": 6.009
}
]
}
]
}

}

如何接收每个"受体"和"突触"的coef#值？ 我试过这个，但它返回我 0..如何读取这样的文件？

QByteArray data = jsonFile.readAll();
QJsonDocument document;
document = document.fromJson(data);
QJsonObject jsonObject = document.object();
QJsonArray neuronsArray = jsonObject.value("Neurons").toArray();
qDebug() << "Size = " << neuronsArray.size();

Answer 1

你必须遍历JSON文档：

QJsonDocument doc = QJsonDocument::fromJson(file.readAll());
QJsonObject root = doc.object();
QJsonObject conf = root.value("Configuration").toObject();
//this gives you the neurons array, in there you have objects which you can access just like above
QJsonArray arr = conf.value("Neurons").toArray();