如何从谷歌抓取第一个链接的描述? [英] How to scrape description of first link from Google?

问题描述

我关注了:如何获取谷歌搜索结果

它可以工作，但我想抓取 Google 返回的第一个链接的描述.对于 CRAN 关键字，它是:

and it works, but I would like to scrape the description of the first link that Google returns. For a CRAN keyword it is :

<span class="st"><em>CRAN</em> is a network of ftp and web servers around the world that store identical, up-to-date, versions of code and documentation for R. Please use the <em>CRAN</em>&nbsp;...</span>

但我不知道这里的 span 部分是什么，请提供不使用 RSelenium

but I don't know what is span section here, please provide solution without using RSelenium

推荐答案

使用rvest:

library(rvest)

baseUrl <- 'https://www.google.it/search?q='

query = 'cran'
url <- paste0(baseUrl, query)


read_html(url) %>% 
    html_nodes('.st') %>% 
    # This select only the first result, change number to select another reusult
    # or comment it to get all first page results
    '['(2) %>% 
    html_text()

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