Add PropertyNamingStrategy field to ObjectMapperFB

Issue: SPR-11431

spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperFactoryBean.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,6 +34,7 @@ import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.MapperFeature;
 import com.fasterxml.jackson.databind.Module;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.databind.module.SimpleModule;
 
@@ -143,6 +144,8 @@ public class Jackson2ObjectMapperFactoryBean implements FactoryBean<ObjectMapper
 
 	private boolean findModulesViaServiceLoader;
 
+	private PropertyNamingStrategy propertyNamingStrategy;
+
 	private ClassLoader beanClassLoader;
 
 
@@ -328,6 +331,15 @@ public class Jackson2ObjectMapperFactoryBean implements FactoryBean<ObjectMapper
 		this.findModulesViaServiceLoader = findModules;
 	}
 
+	/**
+	 * Specify a {@link com.fasterxml.jackson.databind.PropertyNamingStrategy} to
+	 * configure the {@link ObjectMapper} with.
+	 * @@since 4.0.2
+	 */
+	public void setPropertyNamingStrategy(PropertyNamingStrategy propertyNamingStrategy) {
+		this.propertyNamingStrategy = propertyNamingStrategy;
+	}
+
 	@Override
 	public void setBeanClassLoader(ClassLoader beanClassLoader) {
 		this.beanClassLoader = beanClassLoader;
@@ -385,6 +397,10 @@ public class Jackson2ObjectMapperFactoryBean implements FactoryBean<ObjectMapper
 				registerWellKnownModulesIfAvailable();
 			}
 		}
+
+		if (this.propertyNamingStrategy != null) {
+			this.objectMapper.setPropertyNamingStrategy(this.propertyNamingStrategy);
+		}
 	}
 
 	@SuppressWarnings("unchecked")

spring-web/src/test/java/org/springframework/http/converter/json/Jackson2ObjectMapperFactoryBeanTests.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -32,6 +32,7 @@ import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.MapperFeature;
 import com.fasterxml.jackson.databind.Module;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.databind.cfg.DeserializerFactoryConfig;
 import com.fasterxml.jackson.databind.cfg.SerializerFactoryConfig;
@@ -49,7 +50,12 @@ import org.junit.Test;
 
 import org.springframework.beans.FatalBeanException;
 
-import static org.junit.Assert.*;
+import static junit.framework.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
 
 /**
  * Test cases for {@link Jackson2ObjectMapperFactoryBean} class.
@@ -186,6 +192,16 @@ public class Jackson2ObjectMapperFactoryBeanTests {
 		return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
 	}
 
+	@Test
+	public void testPropertyNamingStrategy() {
+		PropertyNamingStrategy strategy = new PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy();
+		this.factory.setPropertyNamingStrategy(strategy);
+		this.factory.afterPropertiesSet();
+
+		assertSame(strategy, this.factory.getObject().getSerializationConfig().getPropertyNamingStrategy());
+		assertSame(strategy, this.factory.getObject().getDeserializationConfig().getPropertyNamingStrategy());
+	}
+
 	@Test
 	public void testCompleteSetup() {
 		NopAnnotationIntrospector annotationIntrospector = NopAnnotationIntrospector.instance;