How to convert HashMap to JsonNode with Jackson?

Question

I have a HashMap object which I want to convert to JsonNode tree using com.fasterxml.jackson.databind.ObjectMapper. What is the best w

Answer 1

First transform your map in a JsonNode :

ObjectMapper mapper = new ObjectMapper();
JsonNode jsonNodeMap = mapper.convertValue(myMap, JsonNode.class);

Then add this node to your ObjectNode with the set method :

myObjectNode.set("myMapName", jsonNodeMap);

To convert from JsonNode to ObjectNode use :

ObjectNode myObjectNode = (ObjectNode) myJsonNode;