The configures the Jackson used by Dropwizard for serializing and deserializing all responses, as well as for logging by bundles such as . supports configuring pretty-printing on or off, and serialization inclusion to any value in Jackson's . also turns on all json5 features, turns on , turns on , and turns on serialization of dates and Strings. To turn it on, add to the list of registered bundles. You'll be able to see that is working because the output of will now be pretty-printed by default. ObjectMapperBundle ObjectMapper liftwizard-bundle-logging-config ObjectMapperBundle JsonInclude.Include ObjectMapperBundle FAIL_ON_UNKNOWN_PROPERTIES STRICT_DUPLICATE_DETECTION ObjectMapperBundle @Override public void initialize(Bootstrap<HelloWorldConfiguration> bootstrap) { // JsonConfigurationFactoryFactory uses a separate ObjectMapper, and can be configured earlier bootstrap.setConfigurationFactoryFactory(new JsonConfigurationFactoryFactory<>()); bootstrap.addBundle(new EnvironmentConfigBundle()); bootstrap.addBundle(new ObjectMapperBundle()); // ConfigLoggingBundle uses the ObjectMapper configured by ObjectMapperBundle bootstrap.addBundle(new ConfigLoggingBundle()); // ... } ObjectMapperBundle ConfigLoggingBundle

lives in the module. ObjectMapperBundle liftwizard-bundle-object-mapper <dependency> <groupId>io.liftwizard</groupId> <artifactId>liftwizard-bundle-object-mapper</artifactId> </dependency>