Override fasterxml jackson ObjectMapper used by Spring Integration dsl

Question

Using Transformers.toJson() my json date looks like this:

"createdDate":{"year":2017,"month":"OCTOBER","monthValue":10,"dayOfMonth":25,"hour":7,"minute":57,"second":36,"nano":972000000,"dayOfWeek":"WEDNESDAY","dayOfYear":298,"chronology":{"calendarType":"iso8601","id":"ISO"}}

Here is the outbound ampq configuration:

@Bean
public IntegrationFlow outboundCdrRabbitFlowDefinition() {
    return IntegrationFlows.from(CHANNEL_NAME)
            .transform(Transformers.toJson())
            .handle(Amqp.outboundAdapter(new RabbitTemplate(cachingConnectionFactory))
                    .routingKey("routing-key"))
            .get();
}

The consumer of the rabbit queue expects the format "yyyy-MM-dd'T'HH:mm:ss.SSSZ"

Is there any way i can override the default ObjectMapper used by spring integration?

For example i have the this configuration in my web api config that extends WebMvcConfigurerAdapter:

@Bean
public ObjectMapper objectMapper() {
    ObjectMapper mapper = new ObjectMapper();
    mapper.setTimeZone(UTC_TIME_ZONE);
    mapper.setDateFormat(ISO_8601_DATE_FORMAT);
    mapper.registerModule(new Jdk8Module());
    mapper.registerModule(new JavaTimeModule());
    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    return mapper;
}

@Bean
public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
    MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
    mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper());
    return mappingJackson2HttpMessageConverter;
}

@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
    converters.add(mappingJackson2HttpMessageConverter());
    super.configureMessageConverters(converters);
}

Is there some way to reuse the objectMapper bean in Spring Integration so the mapping configuration is the same across all my outbound endpoints, web api http or integration ampq?

Answer 1

There is an overloaded version of the Transformers.toJson():

Transformers.toJson(new Jackson2JsonObjectMapper(objectMapper))