Correct usage of Poco C++ JSON for parsing data

Question

Can anyone instruct me on how the Poco C++ JSON works?

Previously I've used JsonReader and JsonToken. The Poco C++ library doesn't seem to have corresponding objects.

How do I for example use the json parser to create a object name consisting the JSON value at the tag name?

Answer 1

EDIT: as of 1.5.2, things were simplified by making DefaultHandler, well ... default (and renaming it to its proper name - ParseHandler. So, if all you need is parsing, no need to explicitly provide the handler anymore:

// objects std::string json = "{ \"test\" : { \"property\" : \"value\" } }"; Parser parser; Var result = parser.parse(json); Object::Ptr object = result.extract<Object::Ptr>(); Var test = object->get("test"); object = test.extract<Object::Ptr>(); test = object->get("property"); std::string value = test.convert<std::string>();  // array of objects std::string json = "[ {\"test\" : 0}, { \"test1\" : [1, 2, 3], \"test2\" : 4 } ]"; Parser parser; Var result = parser.parse(json); Array::Ptr arr = result.extract<Array::Ptr>(); Object::Ptr object = arr->getObject(0);// assert (object->getValue<int>("test") == 0); object = arr->getObject(1); arr = object->getArray("test1"); result = arr->get(0); assert (result == 1); 

See this answer for more details.