How to serialize lazy loaded entities with jackson module hibernate?

You can try this. It helps to me.

ObjectMapper mapper = new ObjectMapper();Hibernate4Module hbm = new Hibernate4Module();hbm.enable(Hibernate4Module.Feature.FORCE_LAZY_LOADING);mapper.registerModule(hbm);ObjectWriter w = mapper.writer();String result = null;try {    result = w.writeValueAsString(o);} catch (JsonProcessingException e) {    e.printStackTrace();}

This is how I got it working, i'm using RestEASY on JBoss WildFly

@Provider@Produces(MediaType.APPLICATION_JSON)public class JacksonConfig implements ContextResolver<ObjectMapper> {    @Override    public ObjectMapper getContext(Class<?> type) {        ObjectMapper mapper = new ObjectMapper();        mapper.registerModule(new Hibernate4Module());        return mapper;    }}

I have the exact problem and here is my solution.

public class YourObjectMapper extends ObjectMapper {    @PostConstruct    public void afterPropertiesSet() throws Exception {        getSerializationConfig().set(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);    }}

p/s: Only valid for 1.9.x org.codehaus.jackson.map.ObjectMapper and not 2.x Jackson.