nokogiri

# Define the html url url = "http://mp3.baidu.com/" # Get the nokogiri document DOC = nokogiri: HTML (open (URL )) In centos, the above sentence cannot be parsed, and n writing methods have been tried. Later I found it was a nokogiri installation problem. If centos5.5 is used, the latest version of libxml2 is still too low. centos is so easy to use and stable

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 Require ' Nokogiri ' 2 Require ' Open-Uri ' 3 Require " Iconv " 4 5 Task: dreamtype => : Environment Do 6 # Doc = Nokogiri: HTML (file. Open ( " A.html " )) 7 # Doc.css ( " Table.txt> tr> TD: Nth-Child (1) " ). Each Do | Link | 8 # Dream. Create

Installation For Ubuntu, you need to install LIBXML2, libxslt these two components: $ apt-get Install LIBXML2 libxslt Then you can: $ gem Install Nokogiri Available optionsNokogiri provides some options for parsing files, which are commonly used: Noblanks: Delete Empty node Noent: Alternative Entities NoError: Hide Error Reporting STRICT: Accurate parsing, throwing an error when parsing to a file exceptio

Code snippets, code sharing, PHP code sharing, Java code sharing, Ruby code sharing, Python code sharing, HTML code sharing, CSS code sharing, SQL code sharing, and JavaScript code sharing # encoding: utf-8require 'thread'require 'nokogiri'require 'open-uri'require 'rss/maker' $result=Queue.newdef extract_readme_header(no,name,url) frame = Nokogiri::HTML(open(url)) return unless frame readme=$url+frame.css('frame')[1]['src'] return unless readme

' and if-doesn ' t help, filean issue with the output of ' brew--config ': HTTPS://GITHUB.COM/MXC l/homebrew/issuesthanks!Executing bundles。。。 Gem::ext::builderror:error:failed to build gem native extension. /users/wuxj/.rvm/rubies/ruby-2.1.2/bin/ruby-r./siteconf20140830-1163-1hd6znq.rb extconf.rb Building Nokogiri using Packaged libraries.-----Libiconv is missing. Please visit http://nokogiri.org/tutorials/installing_nokogiri.html to help with

... yesBuilding Nokogiri using packaged libraries.Checking for Gzdopen () In-lz ... yesChecking for iconv ... yes************************************************************************IMPORTANT NOTICE: Building Nokogiri with a packaged version of libxml2-2.9.2With the following patches applied:-0001-revert-missing-initialization-for-the-catalog-module.patch-0002-fix-missing-entities-after-cve-2014-3660-f

a variety of crawl solutions. Some of them convert HTML to other formats, such as JSON, which makes it easier to extract what you want. Other solutions read HTML, you can define content as a function of an HTML hierarchy in which data is tagged. One such solution is Nokogiri, which supports parsing HTML and XML documents using the Ruby language. Other open source crawlers include pjscrape for JavaScript and beautiful Soup for Python. Pjscrape impleme

prompts to install the required components. Gem install rack-cache-v '1. 2' Then bundle install again, and an error is returned: An error occurred while installing nokogiri (1.6.6.2), and Bundler cannot continue.Make sure that 'gem install nokogiri-V' 1. 6.6.2 ''succeeds before bundling. Follow the prompts in gem install nokogiri-v '1. 6.6.2 'and run bundle ins

These two days need to put the word in the word to local, Youdao itself also provides such a function, but very single, can only export word spelling, phonetic transcription, Chinese semantics, not easy to learn and memorize words. So using Ruby to write this crawler, the whole process of the most important to solve is three questions: URL redirection Analog Login Youdao Dictionary Management of cookies in HTTP access HTTP redirectionWe open to the first page of the diction

search to use Open-uri and Nokogiri.First look at the Open-uri, which is a ruby built-in feature. To use Open-uri you only need to add require ' Open-uri ' to your code, and it's easy to use.1Open"http://www.ruby-lang.org/en") {|f|2F.each_line {|line|P Line}3P F.base_uri#4P F.content_type#"Text/html"5P F.charset#"Iso-8859-1"6P f.content_encoding# []7P f.last_modified#Thu Dec 02:45:02 UTC 20028}The Open function provides a file object that has been expanded to include meta information for some W

ERROR: Error: ERROR installing rails, invalid turails Building native extensions. This could take a while...ERROR: Error installing rails: ERROR: Failed to build gem native extension. current directory: /var/lib/gems/2.3.0/gems/nokogiri-1.8.2/ext/nokogiri/usr/bin/ruby2.3 -r ./siteconf20180213-11055-1aanqyp.rb extconf.rbchecking if the C compiler accepts ... yesBuilding

Building native extensions. This is could take a while ... Error:error installing rails:ERROR:Failed to build gem native extension. Current directory:/var/lib/gems/2.3.0/gems/nokogiri-1.8.2/ext/nokogiri/usr/bin/ruby2.3-r./ SITECONF20180213-11055-1AANQYP.RB extconf.rb Checking if the C compiler accepts ... yes building Nokogiri using packaged L Ibraries. Usin

Ruby: Multi-threaded Download blog posts to local full code Copy Code code as follows: #encoding: Utf-8 Require ' net/http ' Require ' thread ' Require ' Open-uri ' Require ' Nokogiri ' Require ' date ' $queue = Queue.new#文章列表页数Page_nums = 8Page_nums.times do |num|$queue. Push ("http://www.cnblogs.com/hongfei/default.html?page=" +num.to_s)End Threads = []#获取网页源码def get_html (URL)html = ""Open (URL) do |f|HTML = F.readEndreturn

Installation Plugin REDMINE_DMSF Summary Background Environment Linux system version Redmine version DMSF plugin Version installation process Installing Redmine Installing the DMSF Plugin Using full-text search in Redmine Principles behind DMSF Basic knowledge of Xapian and Omega Create/Query Index database manually DMSF Configuration Modifications Using full-Text se

#本程序功能: Download the Web image to local and save it by number. #使用Ruby1.9.3 is written under WINXP_SP3. Require ' Nokogiri ' require ' Open-uri ' #以下 parse the page based on the URL. page = nokogiri::html (open ("http://www.169bb.com/News/2014-12-20/093288.htm")) Arrlen = page.css (' img '). Lengthmypics = Array.new (Arrlen) #以下 the parsed image address into the mypics array. For x in 0...arrlenmypics[x] =

, configuration setting, log files, internet messaging, and filtering. Supported script scripts are known on the website, including python, Ruby, Java, PHP, Perl, and JavaScript. require ‘yaml’ps2 = YAML.load_file(‘example.yaml’)ps2.each do |it| puts it.inspectendJSON Activesupport JSON is available in rails. Its usage is as follows: ActiveSupport::JSON.encode( [ {:a => 1 , :b => 2 } , "c", "d" ] )=> "[{\"a\":1,\"b\":2},\"c\",\"d\"]" ActiveSupport::JSON.decode( "[{\"a\":1,\"b\":2},\"c\",\"d\"]"

This article to share is the individual use Ruby to write the crawl page image code, very simple and practical, the need for small partners can refer to. Some time ago to see a lot of people write the next sister script, I also write a ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Module commonhelper require ' Nokogiri ' require ' Open-uri ' def down_load_xmz site_url = ' http://www.xxx.com