Convert javax.json.JsonObject to com.fasterxml.jackson.databind.JsonNode

Question

I have a javax.json.JsonObject and want to validate it against a JSON schema. So I've found the com.github.fge.json-schema-validator. But it works only with com.fasterxml.jackson.databind.JsonNode.

Is there a way to convert my JsonObject into a JsonNode?

Answer 1

public JsonNode toJsonNode(JsonObject jsonObj) {
    ObjectMapper objectMapper = new ObjectMapper();
    return objectMapper.readTree(jsonObj.toString());
}

this will just to it. JsonObject.toString() will convert to json String, you don't need to use anything else.

Answer 2

The following solution parses a javax.json.JsonObject into a JSON string and then parses the JSON string into a com.fasterxml.jackson.databind.JsonNode using Jackson's ObjectMapper:

public JsonNode toJsonNode(JsonObject jsonObject) {

    // Parse a JsonObject into a JSON string
    StringWriter stringWriter = new StringWriter();
    try (JsonWriter jsonWriter = Json.createWriter(stringWriter)) {
        jsonWriter.writeObject(jsonObject);
    }
    String json = stringWriter.toString();

    // Parse a JSON string into a JsonNode
    ObjectMapper objectMapper = new ObjectMapper();
    JsonNode jsonNode = objectMapper.readTree(json);

    return jsonNode;
}