对Hibernate的对象明确指定加载哪些关联属性， 避免在session关闭后访问出现LazyInitialize错误。

EssRepositoryHelperImpl.java

public void initialize(Object entity, String... properties){
        for(String name : properties){
            try {
                String property = BeanUtils.getProperty(entity, name);
                Hibernate.initialize(property);
            } catch (Throwable e) {
                logger.error("initialize lazy property occurs error.", e);
                throw Throwables.propagate(e);
            }
        }
    }