如何让我的rexml/nokogiri脚本运行得更快

Question

我有一个ruby脚本，它收集了46344个xml链接，然后在每个xml文件中收集了16个元素节点。过程的最后一部分是将其存储在CSV文件中。我的问题是这需要很长时间。这需要1-2个多小时。。

这是一个没有链接的脚本，它有所有的XML链接，我不能提供链接，因为它是公司的东西。。我希望天气凉爽。

这是脚本，它可以工作，但需要很长时间：

require 'rubygems'
require 'nokogiri'
require 'open-uri'
require 'rexml/document'
require 'csv'
include REXML
@urls = Array.new
@ID = Array.new
@titleSv = Array.new
@titleEn = Array.new
@identifier = Array.new
@typeOfLevel = Array.new
@typeOfResponsibleBody = Array.new
@courseTyp = Array.new
@credits = Array.new
@degree = Array.new
@preAcademic = Array.new
@subjectCodeVhs = Array.new
@descriptionSv = Array.new
@visibleToSweApplicants = Array.new
@lastedited = Array.new
@expires = Array.new
# Hämtar alla XML-länkar
htmldoc = Nokogiri::HTML(open('A SITE THAT HAVE ALL THE LINKS'))
# Hämtar alla länkar för xml-filerna och sparar dom i arrayn urls
htmldoc.xpath('//a/@href').each do |links|
  @urls << links.content
end
@urls.each do |url|
  # Loop throw the XML files and grab element nodes
  xmldoc = REXML::Document.new(open(url).read)
  # Root element
  root = xmldoc.root
  # Hämtar info-id
  @ID << root.attributes["id"]
  # TitleSv
  xmldoc.elements.each("/ns:educationInfo/ns:titles/ns:title[1]"){
    |e| @titleSv << e.text
  }
  # TitleEn
  xmldoc.elements.each("/ns:educationInfo/ns:titles/ns:title[2]"){
    |e| @titleEn << e.text
  }
  # Identifier
  xmldoc.elements.each("/ns:educationInfo/ns:identifier"){
    |e| @identifier << e.text
  }
  # typeOfLevel
  xmldoc.elements.each("/ns:educationInfo/ns:educationLevelDetails/ns:typeOfLevel"){
    |e| @typeOfLevel << e.text
  }
  # typeOfResponsibleBody
  xmldoc.elements.each("/ns:educationInfo/ns:educationLevelDetails/ns:typeOfResponsibleBody"){
     |e| @typeOfResponsibleBody << e.text
  }
  # courseTyp
  xmldoc.elements.each("/ns:educationInfo/ns:educationLevelDetails/ns:academic/ns:courseOfferingPackage/ns:type"){
     |e| @courseTyp << e.text
  }
  # credits
  xmldoc.elements.each("/ns:educationInfo/ns:credits/ns:exact"){
     |e| @credits << e.text
  }
  # degree
  xmldoc.elements.each("/ns:educationInfo/ns:degrees/ns:degree"){
     |e| @degree << e.text
  }
  # @preAcademic
  xmldoc.elements.each("/ns:educationInfo/ns:prerequisites/ns:academic"){
    |e| @preAcademic << e.text
  }
  # @subjectCodeVhs
  xmldoc.elements.each("/ns:educationInfo/ns:subjects/ns:subject/ns:code"){
    |e| @subjectCodeVhs << e.text
  }
  # DescriptionSv
  xmldoc.elements.each("/educationInfo/descriptions/ct:description/ct:text"){
    |e| @descriptionSv << e.text
  }
  # Hämtar dokuments utgångs-datum
  @expires << root.attributes["expires"]
  # Hämtar dokuments lastedited
  @lastedited << root.attributes["lastEdited"]
  # Lagrar dom i uni.CSV
  CSV.open("eduction_normal.csv", "wb") do |row|
    ([e-mail] - 1).each do |index|
      row << [@ID[index], @titleSv[index], @titleEn[index], @identifier[index], @typeOfLevel[index], @typeOfResponsibleBody[index], @courseTyp[index], @credits[index], @degree[index], @preAcademic[index], @subjectCodeVhs[index], @descriptionSv[index], @lastedited[index], @expires[index]]
    end
  end
end 

Answer 1

如果是网络访问，您可以开始对其进行线程处理和/或开始使用Jruby，Jruby可以使用处理器上的所有内核。如果你必须经常这样做，你必须制定一个读写策略，在没有阻塞的情况下为你提供最佳服务。