是否可以在不诉诸XML的情况下为Spring创建自定义JacksonobjectMapper？

为Spring 创建自定义ObjectMapper很容易,但配置需要XML.我正在尝试减少真正不会改变的事情的XML配置量,而无需重新部署我的整个系统.

所以标题说明了一切 - 我可以使用注释或其他非XML方法来告诉Spring,"嘿,请使用我的自定义对象映射器"？

编辑:

这似乎不起作用

@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;
    }
}

编辑2: 我不相信Spring正在使用我的 ObjectMapper.我有这个代码:

@Primary
@Bean
public ObjectMapper mapper(){
    ObjectMapper mapper = new ObjectMapper();
    JodaModule mod = new JodaModule();
    mod.addSerializer(DateTime.class, new JsonSerializer() {
        @Override
        public void serialize(DateTime dateTime, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
            System.out.println("Hi, bob");
        }
    });
    mapper.registerModule(mod);

    mapper.setPropertyNamingStrategy(PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);
    mapper.setSerializationInclusion(JsonInclude.Include.ALWAYS);
    mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    mapper.enable(SerializationFeature.INDENT_OUTPUT);

    return mapper;
}

但是当我设置一个断点时,System.out.println("Hi, bob")它永远不会被调用 - 虽然我肯定会序列化一个DateTime.