在蘑菇街Weshop部门实习期间的爬虫代码。基于 Scrapy 爬虫框架，对静态或动态页面分别通过 XPath 定位的规则或抓取请求并模拟的方式爬取国外电商平台中商品的 Sku 数据，例如衣服的尺寸、颜色、型号等。

XPath is a powerful language for selecting nodes in an XML or HTML document. JavaScript provides built-in support for XPath through the document.evaluate() method, which can be used to evaluate an XPath expression and return the matching nodes in the document

A simple example to parse page source of a url in android using x-path

Add new page styling rules. Use selectors by: type, id, class and attr. Use combinators and pseudo-classes. Add the xpath.txt file. Write down the XPath equivalents of the CSS selectors you added. Add a selector by text. Add a large block of text. Add a button "to the beginning". After clicking on the button, scroll to the beginning of the page.