Hello every one i have a html code as code bellow. I want to get the text inside <a>(.*)</a>
I want to get this result:
data 1 : hello1
data 2 : hello2
data 3 : hello3
from that input:
<a>
hello1
</a>
<a>
hello2
</a>
<a>
hello3
</a>
-
6Don't parse html with regexps.Seki– Seki2012-07-18 11:32:57 +00:00Commented Jul 18, 2012 at 11:32
-
Use a dedicated HTML parser like Nokogiri insteadStefan– Stefan2012-07-18 11:46:10 +00:00Commented Jul 18, 2012 at 11:46
Add a comment
|
1 Answer
To expand on the two comments, the following Nokogiri code will work for your example. You can use either xpath or CSS. A dedicated parser is much more powerful than rolling your own regex.
> require 'nokogiri'
=> true
> doc = Nokogiri::HTML("<a>hello1</a><a>hello2</a><a>hello3</a>")
=> #<Nokogiri::HTML::Document:0x3ffec2494f48 name="document" children=[#<Nokogiri::XML::DTD:0x3ffec2494bd8 name="html">, #<Nokogiri::XML::Element:0x3ffec2494458 name="html" children=[#<Nokogiri::XML::Element:0x3ffec2494250 name="body" children=[#<Nokogiri::XML::Element:0x3ffec2494048 name="a" children=[#<Nokogiri::XML::Text:0x3ffec2493e40 "hello1">]>, #<Nokogiri::XML::Element:0x3ffec249dc88 name="a" children=[#<Nokogiri::XML::Text:0x3ffec249da80 "hello2">]>, #<Nokogiri::XML::Element:0x3ffec249d878 name="a" children=[#<Nokogiri::XML::Text:0x3ffec249d670 "hello3">]>]>]>]>
> doc.css('a').each { |node| p node.text }
"hello1"
"hello2"
"hello3"
=> 0
Update: You'll need the nokogiri gem if you don't have it installed already.
sudo gem install nokogiri
Depending on your setup, you may also need to prepend
require 'rubygems'
1 Comment
AHmedRef
LoadError: cannot load such file -- nokogiri from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:i n
require' from i got : C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:i n require' from (irb):1 from C:/Ruby193/bin/irb:12:in `<main>'