导入依赖

<dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>fastjson</artifactId>
   <version>1.2.71</version>
</dependency>

转化

方法：JSON.toJSONString(对象)

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解析：JSON.parseObject(JSON格式,对象.class)

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给你一个尝试的例子

JSON格式

{
    "address" : "自由贸易试验区临港新片区南岛1号",
    "brand" : "皇冠假日",
    "business" : "滴水湖临港地区",
    "city" : "上海",
    "id" : 61083,
    "location" : "30.890867, 121.937241",
    "name" : "上海滴水湖皇冠假日酒店",
    "pic" : "https://m.tuniucdn.com/fb3/s1/2n9c/312e971Rnj9qFyR3pPv4bTtpj1hX_w200_h200_c1_t0.jpg",
    "price" : 971,
    "score" : 44,
    "starName" : "五钻"
  }

对应的类

package cn.itcast.hotel.pojo;

import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
public class HotelDoc {
    private Long id;
    private String name;
    private String address;
    private Integer price;
    private Integer score;
    private String brand;
    private String city;
    private String starName;
    private String business;
    private String location;
    private String pic;

    public HotelDoc(Hotel hotel) {
        this.id = hotel.getId();
        this.name = hotel.getName();
        this.address = hotel.getAddress();
        this.price = hotel.getPrice();
        this.score = hotel.getScore();
        this.brand = hotel.getBrand();
        this.city = hotel.getCity();
        this.starName = hotel.getStarName();
        this.business = hotel.getBusiness();
        this.location = hotel.getLatitude() + ", " + hotel.getLongitude();
        this.pic = hotel.getPic();
    }
}