This is a demo
Spring MVC (client and server side) uses HttpMessageConverters to negotiate content conversion in an HTTP exchange. If Jackson is on the classpath, you already get the default converter(s) provided by Jackson2ObjectMapperBuilder, an instance of which is auto-configured for you. The ObjectMapper (or XmlMapper for Jackson XML converter) instance (created by default) has the following customized properties: MapperFeature.DEFAULT_VIEW_INCLUSION is disabled DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES is disabled SerializationFeature.WRITE_DATES_AS_TIMESTAMPS is disabled SerializationFeature.WRITE_DURATIONS_AS_TIMESTAMPS is disabled Spring Boot also has some features to make it easier to customize this behavior. You can configure the ObjectMapper and XmlMapper instances by using the environment. Jackson provides an extensive suite of on/off features that can be used to configure various aspects of its processing. These features are described in several enums (in Jackson) that map onto properties in the environment: