Mapper文件:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="io.dao.gather.PeopleCollectionDao"> <!-- 可根据自己的需求,是否要使用 --> <resultMap type="io.entity.gather.PeopleCollectionEntity" id="peopleCollectionMap"> <result property="id" column="id"/> <result property="name" column="name"/> <result property="identity" column="identity"/> <result property="phone" column="phone"/> <result property="address" column="address"/> <result property="filePath" column="file_path"/> <result property="remark" column="remark"/> <result property="rank" column="rank"/> <result property="flag" column="flag"/> <result property="type" column="type"/> <association property="positionCollectionEntity" javaType="io.entity.gather.PositionCollectionEntity" column="flag" resultMap="positionCollectionMap"> </association> </resultMap> <!-- 外键Map --> <resultMap type="io.entity.gather.PositionCollectionEntity" id="positionCollectionMap"> <id property="id" column="id" /> <result property="flag" column="flag" /> <result property="positionX" column="position_x" /> <result property="positionY" column="position_y" /> </resultMap> <select id="queryByName" resultMap="peopleCollectionMap"> SELECT * from tb_gather_collection_people_info people JOIN tb_gather_collection_position positon on people.flag =positon.flag where people.name=#{name} </select> </mapper>
Entity文件:
package io.entity.gather; import com.baomidou.mybatisplus.annotations.TableId; import com.baomidou.mybatisplus.annotations.TableName; import java.io.Serializable; @TableName("tb_gather_collection_people_info") public class PeopleCollectionEntity implements Serializable { private static final long serialVersionUID = 1L; /** * 主键 */ @TableId private Long id; /** * 姓名 */ private String name; /** * 身份证号 */ private String identity; /** * 手机号码 */ private String phone; /** * 户籍地址 */ private String address; /** * 文件位置 */ private String filePath; /** * 备注 */ private String remark; /** * 序号(用于区分同行人员第几位) */ private Integer rank; /** * 同一次数据采集的标识 */ private String flag; /** * 1,人员信息,2,同行人员,3,车主信息,4,房东信息,5,驾驶员,6,车上人员 */ private Integer type; /** * 采集场景外键 */ private PositionCollectionEntity positionCollectionEntity; //省略getter和setter方法 }