需要从网络抓取中获取电子邮件 ID 和电话号码 [关闭]

Question

require 'open-uri'
require 'nokogiri'

def scrape(url)
  html = open(url).read
  nokogiri_doc = Nokogiri::HTML(html)
  final_array = []

  nokogiri_doc.search("a").each do |element|
    element = element.text
    final_array << element
  end

  final_array.each_with_index do |index|
    puts "#{index}"
  end
end


scrape('http://www.infranetsol.com/')

在此我只获得a 标签，但我需要将电子邮件 ID 和电话号码放入 excel 文件中。

Answer 1

你只有文字。所以，你能做的就是只保留看起来像电子邮件或电话号码的字符串。

例如，如果将结果保存在数组中

a = scrape('http://www.infranetsol.com/')

您可以通过电子邮件获取元素（带有“@”的字符串）：

a.select { |s| s.match(/.*@.*/) }

您可以获取带有电话号码的元素（至少 5 位数字的字符串）：

a.select{ |s| s.match(/\d{5}/) }

整个代码：

require 'open-uri'
require 'nokogiri'

def scrape(url)
  html = open(url).read
  nokogiri_doc = Nokogiri::HTML(html)
  final_array = []

  nokogiri_doc.search("a").each do |element|
    element = element.text
    final_array << element
  end

  final_array.each_with_index do |index|
    puts "#{index}"
  end
end


a = scrape('http://www.infranetsol.com/')
email = a.select { |s| s.match(/.*@.*/) }
phone = a.select{ |s| s.match(/\d{5}/) }

# in your example, you will have to email in email 
# and unfortunately a complex string for phone.
# you can use scan to extract phone from text and flat_map 
# to get an array without sub array
# But keep in mind it will only worked with this text

phone.flat_map{ |elt| elt.scan(/\d[\d ]*/) }