1. <update id="updateBatch" parameterType="java.util.List" >
    2.         <foreach collection="list" item="item" index="index" open="" close="" separator=";">
    3.             update standard_relation
    4.             <set >
    5.                 <if test="item.standardFromUuid != null" >
    6.                     standard_from_uuid = #{item.standardFromUuid,jdbcType=VARCHAR},
    7.                 </if>
    8.                 <if test="item.standardToUuid != null" >
    9.                     standard_to_uuid = #{item.standardToUuid,jdbcType=VARCHAR},
    10.                 </if>
    11.                 <if test="item.gmtModified != null" >
    12.                     gmt_modified = #{item.gmtModified,jdbcType=TIMESTAMP},
    13.                 </if>
    14.             </set>
    15.             where id = #{item.id,jdbcType=BIGINT}
    16.         </foreach>
    17.     </update>

    参考： https://blog.csdn.net/q957967519/article/details/88669552