List<Object[]> result = query.list();
            List<Company> companies = Lists.newArrayList();
            for (Object[] obj : result) {
                for (int i = 0; i < obj.length; i++)
                    companies.add((Company) obj[i]);//该怎么放？？？
            }

 异常1.java.lang.NullPointerException
 异常2.java.lang.ClassCastException:java.lang.String cannot be cast to Company