Removing JSON elements with jackson

jackson, java, json

Solution

I haven't tested this, but I think something like this would do what you want:

import org.codehaus.jackson.node.ObjectNode;
// ...
for (JsonNode personNode : rootNode) {
    if (personNode instanceof ObjectNode) {
        ObjectNode object = (ObjectNode) personNode;
        object.remove("familyName");
        object.remove("middleName");
    }
}

You could also do this more efficiently using Jackon's raw parsing API, but the code would be a lot messier.

Problem

I've a particular JSON Node that corresponds to import org.codehaus.jackson.JsonNode, and not import org.codehaus.jackson.map.JsonNode. ``` [ { "givenName": "Jim", "formattedName": "jimJackson", "familyName": null, "middleName": "none", "honorificPrefix": "mr", "honorificSuffix": "none" }, { "givenName": "john", "formattedName": "johnLasher", "familyName": null, "middleName": "none", "honorificPrefix": "mr", "honorificSuffix": "none" }, { "givenName": "carlos", "formattedName": "carlosAddner", "familyName": null, "middleName": "none", "honorifiPrefix": "mr", "honorificSuffix": "none" }, { "givenName": "lisa", "formattedName": "lisaRay", "familyName": null, "middleName": "none", "honorificPrefix": "mrs", "honorificSuffix": "none" }, { "givenName": "bradshaw", "formattedName": "bradshawLion", "familyName": null, "middleName": "none", "honorificPrefix": "mr", "honorificSuffix": "none" }, { "givenName": "phill", "formattedName": "phillKane", "familyName": null, "middleName": "none", "honorificPrefix": "mr", "honorificSuffix": "none" }, { "givenName": "Gabriel", "formattedName": "gabrielMoosa", "familyName": null, "middleName": "none", "honorificPrefix": "mr", "honorificSuffix": "none" } ] ``` I want to remove the "familyName" and "middleName" from all the JSON nodes of the above array. Is there any way to achieve this?

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