Is it possible to create a custom Jackson objectMapper for Spring without resorting to XML?

It's easy to create a custom ObjectMapper for Spring, but the configuration requires XML. I'm trying to reduce the amount of XML configuration for things that really aren't going to change without requiring a redeploy of my entire system anyway.

So the title says it all - can I use annotations or some other non-XML method to tell Spring, "Hey, please use my custom object mapper pls"?

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EDIT:

This does not appear to work

@Configuration
@EnableWebMvc
public class AppConfig {

    @Primary
    @Bean
    public ObjectMapper mapper(){
        ObjectMapper mapper = new ObjectMapper();
        mapper.setPropertyNamingStrategy(PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);
        mapper.setSerializationInclusion(JsonInclude.Include.ALWAYS);
        mapper.registerModule(new JodaModule());
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        return mapper;
    }
}