通过Hit的getFiled方法为什么获取的结果是null

今天发现了原因是：
searchRequestBuilder.setQuery(constructor.listBuilder()).addField(field);这行代码放到SearchResponse response = searchRequestBuilder.execute().actionGet();后面了，导致没有将searchRequestBuilder这个查询体放进去，而是直接去执行了searchRequestBuilder，结果导致getFileds方法没有值，而source里面有值，完全是代码逻辑的问题 
最后，修改代码顺序能够正确返回需要的字段值。 
 
最后将正确代码贴出来，供各位参考：

   public Map<String, Object> searchField(String index, String type, ESQueryBuilderConstructor constructor,String field){



        client = ESUtils.ES_UTILS.getClient();



        Map<String, Object> results = new HashMap<>();



        SearchRequestBuilder searchRequestBuilder =

                client.prepareSearch(index).setTypes(type).setVersion(Boolean.TRUE);



        //排序

        if (StringUtils.isNotEmpty(constructor.getAsc())) {



            searchRequestBuilder.addSort(constructor.getAsc(), SortOrder.ASC);



        }



        if(StringUtils.isNotEmpty(constructor.getDesc())) {



            searchRequestBuilder.addSort(constructor.getDesc(), SortOrder.DESC);



        }



        //设置查询体

        searchRequestBuilder.setQuery(constructor.listBuilder()).addFields(field);



        //返回条目数

        int size = constructor.getSize();



        if (size<0) {



            size = 0;



        }



        if (size>MAX) {



            size = MAX;

        }



        //返回条目数

        searchRequestBuilder.setSize(size);



        searchRequestBuilder.setFrom(constructor.getFrom() < 0 ? 0 : constructor.getFrom());



        SearchResponse response = searchRequestBuilder.execute().actionGet();



        SearchHits hits = response.getHits();



        SearchHit[] searchHits = hits.getHits();



        for (SearchHit sh : searchHits) {



            Set<Map.Entry<String, SearchHitField>> fieldEntry = sh.getFields().entrySet();



            for(Map.Entry<String, SearchHitField> entry:fieldEntry){

                

                results.put(entry.getValue().getName(), entry.getValue().getValue());



            }

        return results;



        }

代码中的：
ESQueryBuilderConstructor其实就是封装的一个我们需要构建的QueryBuilder查询逻辑体