wechatbak/wjj-core/target/classes/mybatis/DisplaceManageMapper.xml

<?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="com.demo.wjj.mapper.DisplaceManageMapper">

    <!--查询置换设备-->
    <select id="selectDisplaceId" resultType="java.lang.String">
        SELECT a.displace_id
        FROM tb_displace_audit a
        WHERE a.id = #{id}
    </select>
</mapper>