Merge pull request spring-projects#3600 from joshiste/test-fix-locale

* pr/3600:
  Polish
  Add locale customization of the ObjectMapper

Author: snicoll

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jackson/JacksonAutoConfiguration.java

@@ -20,6 +20,7 @@
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.Collection;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Map.Entry;
 
@@ -64,6 +65,7 @@
  * @author Andy Wilkinson
  * @author Marcel Overdijk
  * @author Sebastien Deleuze
+ * @author Johannes Stelzer
  * @since 1.1.0
  */
 @Configuration
@@ -162,6 +164,7 @@ public Jackson2ObjectMapperBuilder jacksonObjectMapperBuilder() {
 			configureDateFormat(builder);
 			configurePropertyNamingStrategy(builder);
 			configureModules(builder);
+			configureLocale(builder);
 			return builder;
 		}
 
@@ -237,6 +240,13 @@ private void configureModules(Jackson2ObjectMapperBuilder builder) {
 			builder.modulesToInstall(moduleBeans.toArray(new Module[moduleBeans.size()]));
 		}
 
+		private void configureLocale(Jackson2ObjectMapperBuilder builder) {
+			Locale locale = this.jacksonProperties.getLocale();
+			if (locale != null) {
+				builder.locale(locale);
+			}
+		}
+
 		private static <T> Collection<T> getBeans(ListableBeanFactory beanFactory,
 				Class<T> type) {
 			return BeanFactoryUtils.beansOfTypeIncludingAncestors(beanFactory, type)

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jackson/JacksonProperties.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.autoconfigure.jackson;
 
 import java.util.HashMap;
+import java.util.Locale;
 import java.util.Map;
 import java.util.TimeZone;
 
@@ -34,6 +35,7 @@
  *
  * @author Andy Wilkinson
  * @author Marcel Overdijk
+ * @author Johannes Stelzer
  * @since 1.2.0
  */
 @ConfigurationProperties(prefix = "spring.jackson")
@@ -95,6 +97,11 @@ public class JacksonProperties {
 	 */
 	private TimeZone timeZone = null;
 
+	/**
+	 * Locale used for formatting.
+	 */
+	private Locale locale;
+
 	public String getDateFormat() {
 		return this.dateFormat;
 	}
@@ -155,4 +162,12 @@ public void setTimeZone(TimeZone timeZone) {
 		this.timeZone = timeZone;
 	}
 
+	public Locale getLocale() {
+		return this.locale;
+	}
+
+	public void setLocale(Locale locale) {
+		this.locale = locale;
+	}
+
 }

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jackson/JacksonAutoConfigurationTests.java

@@ -72,6 +72,7 @@
  * @author Andy Wilkinson
  * @author Marcel Overdijk
  * @author Sebastien Deleuze
+ * @author Johannes Stelzer
  */
 public class JacksonAutoConfigurationTests {
 
@@ -381,6 +382,7 @@ public void customTimeZoneFormattingADateTime() throws JsonProcessingException {
 				"spring.jackson.time-zone:America/Los_Angeles");
 		EnvironmentTestUtils.addEnvironment(this.context,
 				"spring.jackson.date-format:zzzz");
+		EnvironmentTestUtils.addEnvironment(this.context, "spring.jackson.locale:en");
 		this.context.refresh();
 		ObjectMapper objectMapper = this.context.getBean(
 				Jackson2ObjectMapperBuilder.class).build();
@@ -402,6 +404,21 @@ public void customTimeZoneFormattingADate() throws JsonProcessingException {
 		assertEquals("\"GMT+10:00\"", objectMapper.writeValueAsString(date));
 	}
 
+	@Test
+	public void customLocale() throws JsonProcessingException {
+		this.context.register(JacksonAutoConfiguration.class);
+		EnvironmentTestUtils.addEnvironment(this.context, "spring.jackson.locale:de");
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.jackson.date-format:zzzz");
+		this.context.refresh();
+		ObjectMapper objectMapper = this.context
+				.getBean(Jackson2ObjectMapperBuilder.class).build();
+
+		DateTime dateTime = new DateTime(1436966242231L, DateTimeZone.UTC);
+		assertEquals("\"Koordinierte Universalzeit\"",
+				objectMapper.writeValueAsString(dateTime));
+	}
+
 	@Configuration
 	protected static class MockObjectMapperConfig {
 

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -176,6 +176,7 @@ content into your application; rather pick only the properties that you need.
 	spring.jackson.deserialization.*= # see Jackson's DeserializationFeature
 	spring.jackson.generator.*= # see Jackson's JsonGenerator.Feature
 	spring.jackson.joda-date-time-format= # Joda date time format string
+	spring.jackson.locale= # locale used for formatting
 	spring.jackson.mapper.*= # see Jackson's MapperFeature
 	spring.jackson.parser.*= # see Jackson's JsonParser.Feature
 	spring.jackson.serialization.*= # see Jackson's SerializationFeature