Modify JsonNode of unknown JSON dynamically in Java

Question

I am trying to modify a JSON (of an unknown structure) where the JsonPath and its equivalent XML Xpath is known to me.

I have tired using com.jayway.jsonpath.J

Answer 1

JsonNode objects are immutable so you can't modify them. What you can do is replace a JsonNode with another one. A cast to ObjectNode is also required to expose the required methods. First find the parent of the node you want to replace :

JsonNode node = root.findParent("JsonPath");

Then use either of these 2 methods to replace it with a new one:

((ObjectNode) node).remove("JsonPath");           // remove current node
((ObjectNode) node).put("JsonPath", "New Value"); // add new one with new value

or

((ObjectNode) node).replace("JsonPath", new TextNode("New Value"));