Support Jackson's DatatypeFeature in Jackson2ObjectMapperBuilder

Closes gh-31380

Author: bramhaag

spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java

@@ -45,6 +45,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategy;
 import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.cfg.DatatypeFeature;
 import com.fasterxml.jackson.databind.cfg.HandlerInstantiator;
 import com.fasterxml.jackson.databind.introspect.AnnotationIntrospectorPair;
 import com.fasterxml.jackson.databind.jsontype.TypeResolverBuilder;
@@ -839,6 +840,9 @@ else if (feature instanceof SerializationFeature serializationFeature) {
 		else if (feature instanceof DeserializationFeature deserializationFeature) {
 			objectMapper.configure(deserializationFeature, enabled);
 		}
+		else if (feature instanceof DatatypeFeature datatypeFeature) {
+			objectMapper.configure(datatypeFeature, enabled);
+		}
 		else if (feature instanceof MapperFeature mapperFeature) {
 			objectMapper.configure(mapperFeature, enabled);
 		}

spring-web/src/test/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilderTests.java

@@ -57,6 +57,8 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.fasterxml.jackson.databind.cfg.DeserializerFactoryConfig;
+import com.fasterxml.jackson.databind.cfg.EnumFeature;
+import com.fasterxml.jackson.databind.cfg.JsonNodeFeature;
 import com.fasterxml.jackson.databind.cfg.SerializerFactoryConfig;
 import com.fasterxml.jackson.databind.deser.BasicDeserializerFactory;
 import com.fasterxml.jackson.databind.deser.Deserializers;
@@ -455,10 +457,12 @@ void completeSetup() throws JsonMappingException {
 				.annotationIntrospector(current -> AnnotationIntrospector.pair(current, introspector))
 				.featuresToEnable(SerializationFeature.FAIL_ON_EMPTY_BEANS,
 						DeserializationFeature.UNWRAP_ROOT_VALUE,
+						EnumFeature.BOGUS_FEATURE,
 						JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER,
 						JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS)
 				.featuresToDisable(MapperFeature.AUTO_DETECT_GETTERS,
 						MapperFeature.AUTO_DETECT_FIELDS,
+						JsonNodeFeature.READ_NULL_PROPERTIES,
 						JsonParser.Feature.AUTO_CLOSE_SOURCE,
 						JsonGenerator.Feature.QUOTE_FIELD_NAMES)
 						.serializationInclusion(JsonInclude.Include.NON_NULL);
@@ -487,13 +491,15 @@ void completeSetup() throws JsonMappingException {
 
 		assertThat(mapper.getSerializationConfig().isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)).isTrue();
 		assertThat(mapper.getDeserializationConfig().isEnabled(DeserializationFeature.UNWRAP_ROOT_VALUE)).isTrue();
+		assertThat(mapper.getSerializationConfig().isEnabled(EnumFeature.BOGUS_FEATURE)).isTrue();
 		assertThat(mapper.getFactory().isEnabled(JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER)).isTrue();
 		assertThat(mapper.getFactory().isEnabled(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS)).isTrue();
 
 		assertThat(mapper.getSerializationConfig().isEnabled(MapperFeature.AUTO_DETECT_GETTERS)).isFalse();
 		assertThat(mapper.getDeserializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION)).isFalse();
 		assertThat(mapper.getDeserializationConfig().isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)).isFalse();
 		assertThat(mapper.getDeserializationConfig().isEnabled(MapperFeature.AUTO_DETECT_FIELDS)).isFalse();
+		assertThat(mapper.getDeserializationConfig().isEnabled(JsonNodeFeature.READ_NULL_PROPERTIES)).isFalse();
 		assertThat(mapper.getFactory().isEnabled(JsonParser.Feature.AUTO_CLOSE_SOURCE)).isFalse();
 		assertThat(mapper.getFactory().isEnabled(JsonGenerator.Feature.QUOTE_FIELD_NAMES)).isFalse();
 		assertThat(mapper.getSerializationConfig().getSerializationInclusion()).isSameAs(JsonInclude.Include.NON_NULL);