Elasticserach jest把返回的数据转换成JAVA对象失败

下面这一段代码:
System.out.println("took:"+took+"----"+"--total--"+total);

List<SearchResult.Hit<ESchisdru, Void>> hits = result.getHits(ESchisdru.class);

System.out.println("hits:"+hits.size());

for (Hit<ESchisdru, Void> hit : hits) {

System.out.println("source:---------------"+hit.source);
ESchisdru source = hit.source;
ESchisdru eSchisdru=new ESchisdru();
eSchisdru.setId(source.getId());

System.out.println("-------"+source.getId());
}

在System.out.println(result.getJsonString());这里打印返回的JSON数据是全部都有的,但是到System.out.println("source:---------------"+hit.source);这是时只有id有数据,其余都为空???不知道这是为什么