JSON in Qt using QVariantMap

In Qt 5, it has the support for JSON data.

"Qt provides support for dealing with JSON data. JSON is a format to encode object data derived from Javascript, but now widely used as a data exchange format on the internet.The JSON support in Qt provides an easy to use C++ API to parse, modify and save JSON data. It also contains support for saving this data in a binary format that is directly mmap'able and very fast to access.More details about the JSON data format can be found at and in RFC-4627."

http://qt-project.org/doc/qt-5/json.html

And I think it's not difficult to port them to Qt 4 if you need.

At least you can find the code at https://github.com/qtproject/qtbase/tree/5.3/src/corelib/json

Someone ported QJson* from 5 to 4:(Added 2013-07-02)https://github.com/5in4/qjson-backport

Note: 2012-11-30

Someone else also pointed that it's possible to use QtScript to parse JSON data. If you can read Chinese(if can't, please Google Translate it): http://www.cuteqt.com/blog/?p=2261 (This site is down for now, forgot to backup it via Google Reader, and GR is also dead... 2013-07-02)

You are using the parser from https://github.com/ereilin/qt-json, right? As far as I am aware, that parser needs your JSON data to always be an object at the top-level, so your data needs to look something like

{"somename": [  {"ID":"9","titel":"wouter","plaatsID":"2616","prio":"3"},  {"ID":"8","titel":"pasta","plaatsID":"3780","prio":"3"},  {"ID":"6","titel":"Muts prikken","plaatsID":"3780","prio":"2"},  {"ID":"5","titel":"doorplannen","plaatsID":"3840","prio":"2"},  {"ID":"4","titel":"Gasfles","plaatsID":"3780","prio":"2"}  ] }

Check out the answers to Best JSON parser for Qt? for some alternative parsers, I'd recommend taking a look at qjson (http://qjson.sourceforge.net/).

void parse_links(const QScriptValue & value, QList<Link> & cbk_links){    QList<QVariantMap> list;    qScriptValueToSequence(value,list);    foreach(auto item, list)    {        Link link;        link.yawDeg = item.value("yawDeg").toFloat();        link.panoId = item.value("panoId").toString();        link.road_argb = item.value("road_argb").toString();        link.description = item.value("description").toString();        link.scene = item.value("scene").toInt();        cbk_links.append(link);    }}

used for passing:

"Links":    [            {   "yawDeg":"18.49",                "panoId":"Voal3KQo5FNL67hq7tA8nA",                "road_argb":"0x80ffffff",                "description":"Knuth-Wintherfeldts Allé",                "scene":"0"            },          {   "yawDeg":"198.49",                "panoId":"6RCsAsNoawmh98eOOs7Wzw",                "road_argb":"0x80ffffff",                "description":"Knuth-Wintherfeldts Allé",                "scene":"0"            }        ]