How to convert JsonNode to ObjectNode

Question

I have a com.fasterxml JsonNode object with some data. I need to do some manipulation on its data. I googled for answer but didn't got it properly. Can you please suggest me how to manipulate JsonNode data. I have also tried to convert JsonNode to ObjectNode as follows

ObjectNode objectNode = (ObjectNode)filterJson; 

but its giving following exception....

java.lang.ClassCastException: com.fasterxml.jackson.databind.node.TextNode cannot be cast to  com.fasterxml.jackson.databind.node.ObjectNode 

please help!!

Answer 1

You can convert a JsonNode in an ObjectNode in this simple way:

ObjectNode objectNode = jsonNode.deepCopy(); 

Available from Jackson 2.0 and tested with Jackson 2.4.0

Answer 2

Finally, I got the solution as follows...

JsonNode jsonNode = Json.toJson("Json String"); ObjectNode node = (ObjectNode) new ObjectMapper().readTree(jsonNode.asText()); //perform operations on node jsonNode = (JsonNode) new ObjectMapper().readTree(node.toString()); 

or another one as below...

ObjectNode node = (ObjectNode) new ObjectMapper().readTree("Json String") //perform operations on node jsonNode = (JsonNode) new ObjectMapper().readTree(node.toString()); 

but I don't know if this is good approach or not ? If there is any better than above, please let me know. Thank you!