diff --git a/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2CodecSupport.java b/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2CodecSupport.java
index 2e6dd16b73..11ba5cdf34 100644
--- a/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2CodecSupport.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2CodecSupport.java
@@ -62,7 +62,7 @@ public abstract class Jackson2CodecSupport {
 				new MimeType("application", "*+json", StandardCharsets.UTF_8));
 
 
-	protected final ObjectMapper objectMapper;
+	private final ObjectMapper objectMapper;
 
 	private final List<MimeType> mimeTypes;
 
@@ -77,6 +77,10 @@ public abstract class Jackson2CodecSupport {
 	}
 
 
+	protected ObjectMapper objectMapper() {
+		return this.objectMapper;
+	}
+
 	protected boolean supportsMimeType(@Nullable MimeType mimeType) {
 		return (mimeType == null || this.mimeTypes.stream().anyMatch(m -> m.isCompatibleWith(mimeType)));
 	}
diff --git a/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonDecoder.java b/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonDecoder.java
index f794f439dc..afb09e3c14 100644
--- a/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonDecoder.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonDecoder.java
@@ -70,10 +70,10 @@ public class Jackson2JsonDecoder extends Jackson2CodecSupport implements HttpMes
 
 	@Override
 	public boolean canDecode(ResolvableType elementType, @Nullable MimeType mimeType) {
-		JavaType javaType = this.objectMapper.getTypeFactory().constructType(elementType.getType());
+		JavaType javaType = objectMapper().getTypeFactory().constructType(elementType.getType());
 		// Skip String: CharSequenceDecoder + "*/*" comes after
 		return (!CharSequence.class.isAssignableFrom(elementType.resolve(Object.class)) &&
-				this.objectMapper.canDeserialize(javaType) && supportsMimeType(mimeType));
+				objectMapper().canDeserialize(javaType) && supportsMimeType(mimeType));
 	}
 
 
@@ -107,8 +107,8 @@ public class Jackson2JsonDecoder extends Jackson2CodecSupport implements HttpMes
 		Class<?> jsonView = (hints != null ? (Class<?>) hints.get(Jackson2CodecSupport.JSON_VIEW_HINT) : null);
 
 		ObjectReader reader = (jsonView != null ?
-				this.objectMapper.readerWithView(jsonView).forType(javaType) :
-				this.objectMapper.readerFor(javaType));
+				objectMapper().readerWithView(jsonView).forType(javaType) :
+				objectMapper().readerFor(javaType));
 
 		return objectDecoder.decode(inputStream, elementType, mimeType, hints)
 				.flatMap(dataBuffer -> {
diff --git a/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonEncoder.java b/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonEncoder.java
index 418c00909f..d2fa9067bc 100644
--- a/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonEncoder.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonEncoder.java
@@ -109,7 +109,7 @@ public class Jackson2JsonEncoder extends Jackson2CodecSupport implements HttpMes
 		Class<?> clazz = elementType.resolve(Object.class);
 		return (Object.class == clazz) ||
 				!String.class.isAssignableFrom(elementType.resolve(clazz)) &&
-				this.objectMapper.canSerialize(clazz) && supportsMimeType(mimeType);
+				objectMapper().canSerialize(clazz) && supportsMimeType(mimeType);
 	}
 
 	@Override
@@ -144,7 +144,7 @@ public class Jackson2JsonEncoder extends Jackson2CodecSupport implements HttpMes
 		JavaType javaType = getJavaType(elementType.getType(), null);
 		Class<?> jsonView = (hints != null ? (Class<?>) hints.get(Jackson2CodecSupport.JSON_VIEW_HINT) : null);
 		ObjectWriter writer = (jsonView != null ?
-				this.objectMapper.writerWithView(jsonView) : this.objectMapper.writer());
+				objectMapper().writerWithView(jsonView) : objectMapper().writer());
 
 		if (javaType.isContainerType()) {
 			writer = writer.forType(javaType);