Jackson

See equivalent in the Reactive stack

The MappingJackson2JsonView uses the Jackson library’s ObjectMapper to render the response content as JSON. By default, the entire contents of the model map (with the exception of framework-specific classes) are encoded as JSON. For cases where the contents of the map need to be filtered, you can specify a specific set of model attributes to encode by using the modelKeys property. You can also use the extractValueFromSingleKeyModel property to have the value in single-key models extracted and serialized directly rather than as a map of model attributes.

You can customize JSON mapping as needed by using Jackson’s provided annotations. When you need further control, you can inject a custom ObjectMapper through the ObjectMapper property, for cases where you need to provide custom JSON serializers and deserializers for specific types.

See equivalent in the Reactive stack

MappingJackson2XmlView uses the Jackson XML extension’s XmlMapper to render the response content as XML. If the model contains multiple entries, you should explicitly set the object to be serialized by using the modelKey bean property. If the model contains a single entry, it is serialized automatically.

You can customized XML mapping as needed by using JAXB or Jackson’s provided annotations. When you need further control, you can inject a custom XmlMapper through the ObjectMapper property, for cases where custom XML you need to provide serializers and deserializers for specific types.