Spring Integration migration from 2.x to 3.x: Change Jackson1 to Jackson2, incl. Joda support

config.xml

<beans>

<!--
 Both json-to-object and object-tojson transformer needs the constructor 
 argument "object-mapper" which uses the custom mapper defined in IntegrationConfig
-->

  <int:chain input-channel="requestChannelJson" output-channel="requestChannel">
    <int:json-to-object-transformer object-mapper="jsonObjectMapper" type="your.package.to.response.Type"/>
  </int:chain>

  <int:chain input-channel="replyChannel" output-channel="replyChannelJson">
    <int:object-to-json-transformer object-mapper="jsonObjectMapper"/>
  </int:chain>
</beans>

IntegrationConfig.java

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.joda.JodaModule;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.integration.support.json.Jackson2JsonObjectMapper;
import org.springframework.integration.support.json.JsonObjectMapper;

@Configuration
public class IntegrationConfig {

	@Bean
	public JsonObjectMapper<?> jsonObjectMapper() {
		final ObjectMapper mapper = new ObjectMapper();
		mapper.registerModule(new JodaModule());
		return new Jackson2JsonObjectMapper(mapper);
	}

}

... and do not forget to clean up the classpath. No Jackson1 should be found, otherwise the a custom transformer is required to enforce Jackson2.