<?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.hmit.modules.activiti.demo.dao.CorrectionDao"> <update id="updateInstanceId"> update tb_correction set instance_id = #{instanceId} where id = #{id} </update> </mapper>