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\",
\"bbb\":\"222\",
\"ccc\":\"333\" }";
ObjectMapper mapper = new ObjectMapper().setVisibility(JsonMethod.FIELD,
Visibility.ANY);
mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,
false);
Test test = mapper.readValue(jsonInput, Test.class);
}
}
class Test
{
String aaa;
String bbb;
}
For other approaches, see http://wiki.fasterxml.com/JacksonHowToIgnoreUnknown