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?

linehrr · Accepted Answer · 2018-04-26 17:50:09Z

15

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.

answered Apr 26, 2018 at 17:50

linehrr

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cassiomolin · Accepted Answer · 2017-05-20 12:33:39Z

8

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;
}

edited May 20, 2017 at 12:33

answered Apr 8, 2016 at 7:54

cassiomolin

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7 Comments

Maik Over a year ago

This it is! Thank you very much :)

cassiomolin Over a year ago

@frogeyedpeas Is the lack of the import details the reason for the downvote?

Sidharth Ghoshal Over a year ago

No I didn't downvote, i only stumbled upon this just now and it seems relevant to something I'm working on.

cassiomolin Over a year ago

@frogeyedpeas I'll consider updating the answer with the import details very soon. For now, the qualified class names on the top of the answer give you a hint.

cassiomolin Over a year ago

@frogeyedpeas Please refer to javax.json.Json. It's part of the Java EE 7 and was introduced in the JSR 353, the Java API for JSON Processing.

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