Ferret 声明式 Web 爬虫系统 项目简介
Ferret 是一个声明式的 Web 爬虫系统，旨在简化网络上的数据提取，以用于 UI 测试、机器学习和分析等等。Ferret 拥有自己的声明式语言，通过抽象出技术细节和底层技术的复杂性，从而更专注于数据本身。特性声明式语言支持静态和动态 web 页面嵌入式可扩展示例LET google = DOCUMENT("https://www.google.com/", true)
INPUT(google, 'input[name="q"]', "ferret", 25)
CLICK(google, 'input[name="btnK"]')
WAIT_NAVIGATION(google)
FOR result IN ELEMENTS(google, '.g')
// filter out extra elements like videos and 'People also ask'
FILTER TRIM(result.attributes.class) == 'g'
RETURN {
title: INNER_TEXT(result, 'h3'),
description: INNER_TEXT(result, '.st'),
url: INNER_TEXT(result, 'cite')
}
INPUT(google, 'input[name="q"]', "ferret", 25)
CLICK(google, 'input[name="btnK"]')
WAIT_NAVIGATION(google)
FOR result IN ELEMENTS(google, '.g')
// filter out extra elements like videos and 'People also ask'
FILTER TRIM(result.attributes.class) == 'g'
RETURN {
title: INNER_TEXT(result, 'h3'),
description: INNER_TEXT(result, '.st'),
url: INNER_TEXT(result, 'cite')
}