jackson2 JSON ISO 8601 date from JodaTime in Spring 3.2RC1
jackson, jodatime, json, spring, spring-mvc
Solution
Or, if you prefer doing your configuration in Java, it could look like this:
@Configuration
@EnableWebMvc
public class RestConfig extends WebMvcConfigurerAdapter {
private ObjectMapper objectMapper() {
Jackson2ObjectMapperFactoryBean bean = new Jackson2ObjectMapperFactoryBean();
bean.setIndentOutput(true);
bean.setSimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
bean.afterPropertiesSet();
ObjectMapper objectMapper = bean.getObject();
objectMapper.registerModule(new JodaModule());
return objectMapper;
}
private MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
converter.setObjectMapper(objectMapper());
return converter;
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(mappingJackson2HttpMessageConverter());
}
}
Problem
I'm working on a REST API in Spring MVC 3.2RC1. I'm fetching a JPA entity with a org.joda.time.DateTime timestamp in it and let Spring serialise it into JSON using ``` @RequestMapping(value = "/foobar", method = RequestMethod.GET, produces = "application/json") @ResponseBody ``` Using the default Jackson2 settings in Spring as I've only added ``` <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.1.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.1.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.1.1</version> </dependency> ``` to my POM and let Spring wire it up itself. The controller is generating: ``` "created":{"year":2012,"dayOfMonth":30,"dayOfWeek":5,"era":1,"dayOfYear":335,"weekOfWeekyear":48,"weekyear":2012,"monthOfYear":11,"yearOfEra":2012,"yearOfCentury":12,"centuryOfEra":20,"millisOfSecond":39,"millisOfDay":52684039,"secondOfMinute":4,"secondOfDay":52684,"minuteOfHour":38,"minuteOfDay":878,"hourOfDay":14,"millis":1354282684039,"zone":{"uncachedZone":{"cachable":true,"fixed":false,"id":"Europe/Stockholm"},"fixed":false,"id":"Europe/Stockholm"},"chronology":{"zone":{"uncachedZone":{"cachable":true,"fixed":false,"id":"Europe/Stockholm"},"fixed":false,"id":"Europe/Stockholm"}},"afterNow":false,"beforeNow":true,"equalNow":false} ``` But I would like it to be and ISO8601 date such as 2007-11-16T20:14:06.3Z (or with the offset). My guess is that I need to access the ObjectMapper and set mapper.enable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); But how do I get access to the ObjectMapper when using ``` <mvc:annotation-driven /> ``` P.S. I'm persisting the objects to PostgreSQL with JPA/Hibernate4 using UserType to get JodaTime support. D.S. Update The config below solves it for java.util.Date but still no dice for JodaTime. ``` <annotation-driven> <message-converters> <beans:bean class="org.springframework.http.converter.StringHttpMessageConverter" /> <beans:bean class="org.springframework.http.converter.ResourceHttpMessageConverter" /> <beans:bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <beans:property name="objectMapper"> <beans:bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean" p:indentOutput="true" p:simpleDateFormat="yyyy-MM-dd'T'HH:mm:ss.SSSZ"> </beans:bean> </beans:property> </beans:bean> </message-converters> </annotation-driven> ```