java - How to parse a JSON string into JsonNode in Jackson?

Question

It should be so simple, but I just cannot find it after being trying for an hour.

I need to get a JSON string, for example, {"k1":v1,"k2":v2}, parsed as a JsonNode.

JsonFactory factory = new JsonFactory();
JsonParser jp = factory.createJsonParser("{"k1":"v1"}");
JsonNode actualObj = jp.readValueAsTree();

gives

java.lang.IllegalStateException: No ObjectCodec defined for the parser, can not deserialize JSON into JsonNode tree

Answer 1

A slight variation on Richards answer but readTree can take a string so you can simplify it to:

ObjectMapper mapper = new ObjectMapper();
JsonNode actualObj = mapper.readTree("{"k1":"v1"}");