Clarify the deprecation status of HttpMapperProperties

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/HttpMapperProperties.java

@@ -18,6 +18,7 @@ package org.springframework.boot.autoconfigure.web;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.springframework.boot.autoconfigure.jackson.JacksonProperties;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.http.converter.HttpMessageConverter;
 
@@ -26,6 +27,8 @@ import com.fasterxml.jackson.databind.SerializationFeature;
 /**
  * Configuration properties to configure {@link HttpMessageConverter}s.
  *
+ * @deprecated pleas use {@link JacksonProperties} instead
+ *
  * @author Dave Syer
  * @author Piotr Maj
  * @author Sebastien Deleuze

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/HttpMessageConvertersAutoConfiguration.java

@@ -71,6 +71,8 @@ public class HttpMessageConvertersAutoConfiguration {
 	@SuppressWarnings("deprecation")
 	protected static class MappingJackson2HttpMessageConverterConfiguration {
 
+		// This can be removed when the deprecated class is removed (the ObjectMapper will
+		// already have all the correct properties).
 		@Autowired
 		private HttpMapperProperties properties = new HttpMapperProperties();