QJSON using in Mac - getting some issues
Question
I am using the QJson for parsing. But I am stuck up with some issues. I have used the following code:
void CityBook ::getCityList(QUrl url)
{
//!connect(cityReply, SIGNAL(readyRead()),this, SLOT(httpReadyRead()));
cityGuideNetworkAccessManager = new QNetworkAccessManager(this);
connect(cityGuideNetworkAccessManager, SIGNAL(finished(QNetworkReply*)),
this, SLOT(httpReadyRead(QNetworkReply*)));
QNetworkRequest cityRequest(url);
cityGuideNetworkAccessManager->get(cityRequest);
}
void CityBook::httpReadyRead(QNetworkReply *reply)
{
QMessageBox::information(this, tr("HTTP"),
tr(reply->readAll()),QMessageBox::NoButton
);
QJson::Parser parser;
bool ok;
const QByteArray &resultbyte = reply->readAll();
qDebug() << resultbyte;
QVariant result1 = parser.parse(reply->readAll(), &ok);
qDebug() << result1;
QVariantList result=parser.parse(resultbyte,&ok).toList();
qDebug()<< result.size();
if (!ok)
{
qFatal("An error occurred during parsing");
exit (1);
}
qDebug() <<"error String"<< parser.errorString();
qDebug() <<"error" <parser.errorLine();
//! QVariantList entries = result["name"].toList();
foreach (QVariant city, result) {
QVariantMap names = city.toMap();
qDebug() << "\t-" << names.value("name");
}
}
The output is:
Starting /Users/QT Developement/CityBook-build-desktop/CityBook.app/Contents/MacOS/CityBook...
""
QVariant(, )
0
error String ""
error 0
Solution
The result of the readAll
function is an empty byte array. According to documentation this can mean either that no data are available or that an error occurred.
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