@TableField(typeHandler = JacksonTypeHandler.class)

@Data
@TableName(value = "person",autoResultMap = true)

<result property="advance" column="advance" typeHandler="com.baomidou.mybatisplus.extension.handlers.JacksonTypeHandler"/>

@TableName(autoResultMap = true)
public class Person {
? ? private Integer id;
? ? private String name;
? ? private Integer age;
? ? @TableField(typeHandler = IntegerListTypeHandler.class)
? ? private List<Integer> orgIds;
? ? @TableField(typeHandler = StringListTypeHandler.class)
? ? private List<String> hobbies;
}

@Mapper
public interface PersonMapper extends BaseMapper<Person> {
? ? /**
? ? ?* 自定義的根據(jù)Id獲取Person的方法，與MyBatis-Plus中的selectById相同的功能（但是不能使用autoResultMap生成的ResultMap）.
? ? ?*/
? ? @Select("SELECT * FROM person WHERE id=#{id}")
? ? Person selectOneById(int id);
}

Person person = new Person();
person.setAge(1);
person.setName("tim");
person.setOrgIds(Lists.newArrayList(1,2,3));
person.setHobbies(Lists.newArrayList("basketball", "pingpong"));
personMapper.insert(person);
# 可以得到正確的字段值
Person personInDb = personMapper.selectById(person.getId());
# orgIds和hobbies都為null
personInDb = personMapper.selectOneById(person.getId());
Preconditions.checkArgument(personInDb.getHobbies().equals(person.getHobbies()));
Preconditions.checkArgument(personInDb.getName().equals(person.getName()));
Preconditions.checkArgument(personInDb.getAge().equals(person.getAge()));
Preconditions.checkArgument(personInDb.getOrgIds().equals(person.getOrgIds()));

/**
?* 設(shè)置了ResultMap為`mybatis-plus_Person`后就可以拿到正確的值.
?*/
@ResultMap("mybatis-plus_Person")
@Select("SELECT * FROM person WHERE id=#{id}")
Person selectOneById(int id);

<resultMap id="rxApiVO" type="RxApiVO" >
?? ?<result column="api_dataway" property="apiDataway" typeHandler="com.baomidou.mybatisplus.extension.handlers.FastjsonTypeHandler" />
</resultMap>

package com.cxstar.domain;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import com.baomidou.mybatisplus.extension.handlers.FastjsonTypeHandler;
import java.io.Serializable;
import java.util.Date;
@lombok.Data
@TableName(autoResultMap = true)
public class Data implements Serializable {
    @TableId(value = "id",type = IdType.AUTO)
    private Integer id;       
	
	// 部分字段省略-------------
    private String title;       
    private String author;         
    private String publisher; 
    // -----------------------   
    @TableField(typeHandler = FastjsonTypeHandler.class)
    private JSONObject aggJson;
}

package com.cxstar;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.cxstar.domain.Data;
import com.cxstar.domain.SearchMsg;
import com.cxstar.mapper.DataMapper;
import com.cxstar.service.OrderService;
import com.cxstar.service.spider.impl.*;
import com.cxstar.service.utils.ExecutorThread;
import com.cxstar.service.utils.SpiderThread;
import com.cxstar.service.utils.SynContainer;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.ArrayList;
import java.util.Date;
import java.util.UUID;
@SpringBootTest
class OrderApplicationTests {
    @Autowired
    DataMapper dataMapper;
    @Test
    void testJson() {
		// insert -----------------------------------
        Data data = new Data();
        data.setTitle("計(jì)算機(jī)安全技術(shù)與方法");
        data.setPublisher("<<計(jì)算機(jī)技術(shù)>>編輯部出版");
        JSONObject jb = new JSONObject();
        jb.put("searchKey", "英格");
        jb.put("curPage", "1");
        JSONArray js = new JSONArray();
        js.add("西北政法大學(xué)");
        js.add("西安理工大學(xué)");
        jb.put("source", js);
        data.setAggJson(jb);
        dataMapper.insert(data);
        // ------------------------------------------
        // select --------------------------------------
        Data data1 = dataMapper.selectById(5837);
        JSONObject jb2 = data1.getAggJson();
        System.out.println(jb2.getJSONArray("source"));
        // ---------------------------------------------
		
		// group by -----------------------------------------------
		LambdaQueryWrapper<Data> lqw = new LambdaQueryWrapper<>();
        lqw.select(Data::getAggJson);
        lqw.groupBy(Data::getAggJson);
        List<Data> dataList = dataMapper.selectList(lqw);
        System.out.println(dataList);
        // --------------------------------------------------------
    }
}