jackson Unrecognized field

Jackson provides a few different mechanisms to configure handling of “extra” JSON elements. Following is an example of configuring the ObjectMapper to not FAIL_ON_UNKNOWN_PROPERTIES.

import org.codehaus.jackson.annotate.JsonAutoDetect.Visibility;
import org.codehaus.jackson.annotate.JsonMethod;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.ObjectMapper;

public class JacksonFoo
  public static void main(String[] args) throws Exception
    // { "aaa":"111", "bbb":"222", "ccc":"333" }
    String jsonInput = "{ \"aaa\":\"111\",
                          \"ccc\":\"333\" }";

    ObjectMapper mapper = new ObjectMapper().setVisibility(JsonMethod.FIELD,

    Test test = mapper.readValue(jsonInput, Test.class);

class Test
  String aaa;
  String bbb;

For other approaches, see http://wiki.fasterxml.com/JacksonHowToIgnoreUnknown

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