计算机科学 ›› 2022, Vol. 49 ›› Issue (10): 252-257.doi: 10.11896/jsjkx.210900210
孟媛, 秦云川, 蔡宇辉, 李肯立
MENG Yuan, QIN Yun-chuan, CAI Yu-hui, LI Ken-li
摘要： 机器人流程自动化(RPA)是以软件机器人及人工智能为基础的业务过程自动化科技,能够代替或协助人类在计算机等设备中完成重复性工作。在应用RPA软件对浏览器页面元素进行自动化操作时,在保证准确的前提下快速对目标DOM元素进行定位和搜索是完成一个完整自动化流程的关键技术难点。现有的定位方法,如Xpath和Css-Selector,面对结构复杂的网页会出现路径过长的问题,导致定位速度慢或路径定位不准等。为解决上述问题,提出一种用于RPA系统的DOM对象快速搜索与定位算法——最优XPATH路径算法。该算法分析元素的属性等信息生成最优路径,用于在自动化操作时对元素进行唯一定位。实验结果表明,使用最优路径对元素进行定位所需时间仅为使用完整XPATH路径定位耗时的23.14%,说明所提算法具有降低路径生成难度,加快元素定位速度等优点,提高了自动化效率。
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