Jackson json : How to find multiple JSON nodes with same node name - json

Question

I am trying to parse a JSON file using Jackson Json parser and in the process using the get(String nodename) function of it.
But when i have multiple nodes of the same name , it is trying to get to the last of the similar nodes and act only on them. How do i get to all the nodes.
For example if my json file was
{"menu":{"a":"1", "b":"2"},
"menu":{"c":"1", "d":"2"},
"menu":{"e":"1", "f":"2"}}
and if i'm trying to do a get("menu") and try to print the field names in it, only e and f get printed whereas i want a b c d e f to get printed.

Answer 1

I'd probably make use of #JsonAnySetter, along the following lines.
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.databind.ObjectMapper;
public class App
{
public static void main(String[] args) throws Exception
{
/* {"menu":{"a":"1", "b":"2"},"menu":{"c":"1", "d":"2"},"menu":{"e":"1", "f":"2"}} */
String json = "{\"menu\":{\"a\":\"1\", \"b\":\"2\"},\"menu\":{\"c\":\"1\", \"d\":\"2\"},\"menu\":{\"e\":\"1\", \"f\":\"2\"}}";
ObjectMapper mapper = new ObjectMapper();
Foo foo = mapper.readValue(json, Foo.class);
System.out.println(foo.menus);
}
}
class Foo
{
List<Menu> menus = new ArrayList<>();
#JsonAnySetter
public void addMenu(String key, Menu menu)
{
menus.add(menu);
}
}
class Menu
{
Map<String, Object> items = new HashMap<> ();
#JsonAnySetter
public void addItems(String itemName, String itemValue)
{
items.put(itemName, itemValue);
}
#Override
public String toString()
{
return String.format("%s", items);
}
}