批量更新，提升性能

沈斌

2017-10-27 052c104cbc2ccc13d83cd912e3b2bbf12c0d56bc

 src/main/resources/mapper/JobDao.xml

@@ -23,4 +23,22 @@
        UPDATE equipment SET state=#{1} WHERE mac=#{0}
    </update>

    <insert id="batchInsertHistory" parameterType="java.util.List" >
        <selectKey resultType ="java.lang.Integer" keyProperty="id" order="AFTER">
            SELECT LAST_INSERT_ID()
        </selectKey >
        insert into history
            (mac, sensor, mac_key, mac_value, time)
        values
            <foreach collection="list" item="item" index="index" separator=",">
                (
                    #{item.mac},
                    #{item.sensor},
                    #{item.mac_key},
                    #{item.mac_value},
                    #{item.time}
                )
            </foreach>
    </insert>

</mapper>