fix: 处理null问题

buhuazhen

2026-06-01 facbfd2b1a0eb1ea971b699def8c85a43c5fa7fa

 src/main/resources/mapper/approve/ApproveProcessMapper.xml

@@ -35,5 +35,8 @@
        <if test="req.approveStatus != null or req.approveStatus == 0">
            and approve_status = #{req.approveStatus}
        </if>
        <if test="req.approveType != null ">
            and approve_type = #{req.approveType}
        </if>
    </select>
</mapper>