参考视频: https://www.bilibili.com/video/av49809274/?p=22
一,什么是XPATH?
xpath(xml path language)是一门在xml和HTML文件中查找信息的语言,可用来在xml和HTML文档中对元素和属性进行遍历
XPATH开发工具
1, Chrome插件 XPath Helper
2, Firefox插件XPath Checker
基础知识参考:
https://www.runoob.com/xpath/xpath-summary.html