elasticsearch查询出来的json数据转换成Java对象失败

代码

@Test
    void getDocument() throws IOException {
        //1创建GetRequest对象
        GetRequest request = new GetRequest("test_es").id("56201");
        SearchRequest searchRequest = new SearchRequest();
        //2获取es返回内容
        GetResponse response = client.get(request, RequestOptions.DEFAULT);
        //3获取es查询到的数据
        String source = response.getSourceAsString();
        //从json类型转换成Java对象
        HotelDoc hotelDoc = JSON.parseObject(source, HotelDoc.class); //**转换成Java对象失败（所有字段的值都是null）**
        System.out.println("es返回的json类型:" + source);
        System.out.println("hotelDoc:" + hotelDoc);
    }

控制台打印出来的信息

es返回的json类型:{"{\"score\":44,\"address\":\"东方路838号\",\"business\":\"浦东陆家嘴金融贸易区\",\"city\":\"上海\",\"price\":873,\"starName\":\"四星级\",\"name\":\"上海齐鲁万怡大酒店\",\"location\":\"31.226031, 121.525801\",\"id\":56201,\"pic\":\"https://m.tuniucdn.com/fb2/t1/G6/M00/52/B6/Cii-TF3eXKeIJeN7AASiKHbTtx4AAGRegDSBzMABKJA111_w200_h200_c1_t0.jpg\",\"brand\":\"万怡\"}":"JSON"}
hotelDoc:HotelDoc(id=null, name=null, address=null, price=null, score=null, brand=null, city=null, starName=null, business=null, location=null, pic=null)