class CustomSerializer extends JsonSerializer<ARow> {
@Override
public Class<ARow> handledType() {
    return ARow.class;
}

public void serialize(ARow value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException, JsonProcessingException {
    jgen.writeStartObject();
    jgen.writeStringField("ounc", value.ounces.toLowerCase()); //Do this for all of your relevant properties..
    jgen.writeEndObject();
}

ObjectMapper m = new ObjectMapper();
SimpleModule testModule = new SimpleModule("MyModule", new Version(1, 0, 0, null));
testModule.addSerializer(new CustomSerializer());
m.registerModule(testModule);

public class MyCustomObjectMapper extends ObjectMapper {
    public MyCustomObjectMapper() {
        SimpleModule module = new SimpleModule("My Module", new Version(1, 0, 0, "SNAPSHOT"));
        module.addSerializer(new CustomSerializer());
        module.addSerializer(new CustomSerializer2());
        // etc
        this.registerModule(module);
    }
}

<bean id="myCustomObjectMapper" class="com.foo.proj.objectmapper.MyCustomObjectMapper"/>

<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
    <property name="objectMapper" ref="myCustomObjectMapper"/>
</bean>