沒有 html 元素的 Nokogiri 解析表

Question

我有這段代碼試圖轉到一個 URL 並將 'li' 元素解析為一個數組。 但是，在嘗試解析不在“b”標簽中的任何內容時，我遇到了問題。

代碼：

url = '(some URL)'
page = Nokogiri::HTML(open(url))
csv = CSV.open("/tmp/output.csv", 'w')

page.search('//li[not(@id) and not(@class)]').each do |row|
  arr = []
  row.search('b').each do |cell|
    arr << cell.text
  end
  csv << arr
  pp arr
end

HTML：

<li><b>The Company Name</b><br>
The Street<br>
The City, 
The State 
The Zipcode<br><br>
</li>

我想解析所有元素，以便輸出如下所示：

["The Company Name", "The Street", "The City", "The State", "The Zip Code"],
["The Company Name", "The Street", "The City", "The State", "The Zip Code"],
["The Company Name", "The Street", "The City", "The State", "The Zip Code"]

Answer 1

require 'nokogiri'

def main
  output = []
  page = File.open("parse.html") {|f| Nokogiri::HTML(f)}
  page.search("//li[not(@id) and not (@class)]").each do |row|
    arr = []
    result = row.text
    result.each_line { |l|
      if l.strip.length > 0
        arr << l.strip
      end
    }
    output << arr
  end
  print output
end

if __FILE__ == $PROGRAM_NAME
  main()
end

Answer 2

我最終找到了我自己問題的解決方案，所以如果有人感興趣，我只是改變了

row.search('b').each do |cell|

進入：

row.search('text()'.each do |cell|

我也變了

arr << cell.text

進入：

arr << cell.text.gsub("\n", '').gsub("\r", '') 

為了刪除所有出現在輸出中的 \\n 和 \\r。

Answer 3

根據您的 HTML，我會這樣做：

require 'nokogiri'

doc = Nokogiri::HTML(<<EOT)
<ol>
<li><b>The Company Name</b><br>
The Street<br>
The City, 
The State 
The Zipcode<br><br>
</li>
<li><b>The Company Name</b><br>
The Street<br>
The City, 
The State 
The Zipcode<br><br>
</li>
</ol>
EOT

doc.search('li').map{ |li|
  text = li.text.split("\n").map(&:strip)
}
# => [["The Company Name",
#      "The Street",
#      "The City,",
#      "The State",
#      "The Zipcode"],
#     ["The Company Name",
#      "The Street",
#      "The City,",
#      "The State",
#      "The Zipcode"]]