我对Qt还是很陌生,我想做一个非常简单的操作:
我必须获得以下JSonObject:
{
"Record1" : "830957 ",
"Properties" :
[{
"Corporate ID" : "3859043 ",
"Name" : "John Doe ",
"Function" : "Power Speaker ",
"Bonus Points" : ["10 ", "45", "56 ", "34", "56", "10 ", "45", "56 ", "34", "56", "10 ", "45", "56 ", "34", "56", "10 ", "45", "56 ", "34", "56", "10 ", "45", "56 ", "34", "56 ", "10", "45 ", "56", "34 ", "56", "45"]
}
]
}
已使用此语法和有效性检查器http://jsonformatter.curiousconcept.com/检查了JSon,并发现其有效。
为此,我使用了String的QJsonValue初始化并将其转换为QJSonObject:
QJsonObject ObjectFromString(const QString& in)
{
QJsonValue val(in);
return val.toObject();
}
我正在加载从文件粘贴的JSon:
QString path = "C:/Temp";
QFile *file = new QFile(path + "/" + "Input.txt");
file->open(QIODevice::ReadOnly | QFile::Text);
QTextStream in(file);
QString text = in.readAll();
file->close();
qDebug() << text;
QJsonObject obj = ObjectFromString(text);
qDebug() <<obj;
肯定有一个很好的方法来执行此操作,因为它不起作用,并且我没有找到任何有用的示例
最佳答案
QString data; // assume this holds the json string
QJsonDocument doc = QJsonDocument::fromJson(data.toUtf8());
如果您想要QJsonObject ...
QJsonObject ObjectFromString(const QString& in)
{
QJsonObject obj;
QJsonDocument doc = QJsonDocument::fromJson(in.toUtf8());
// check validity of the document
if(!doc.isNull())
{
if(doc.isObject())
{
obj = doc.object();
}
else
{
qDebug() << "Document is not an object" << endl;
}
}
else
{
qDebug() << "Invalid JSON...\n" << in << endl;
}
return obj;
}