Question

我想知道是否可以使用数组进行多个机械化查询？以下代码减去数组可以使用单个但不是多个查询。

require 'nokogiri'
require 'mechanize'

agent = Mechanize.new

#User Agent masking
agent.user_agent_alias = 'Windows Mozilla'

#Array of keywords to search
search = Array.new

search << 'TAICHI 21'
search << 'S56CA'

#Take our search array, insert it into a query
agent.get("http://www.asus.com/Search/?SearchKey=#{search}")

#This handles the url
File.open("results.txt","w") do |f|
    PP.pp(page.links.find_all{|l| l.text =~ /#{search}/i},f)
end

第二次尝试

require 'nokogiri'
require 'mechanize'

agent = Mechanize.new

#User Agent masking
agent.user_agent_alias = 'Windows Mozilla'

#Array of keywords to search
search = [ 'S56CA', 'TAICHI 21' ]

#Take our search array, insert it into a query
agent.get("http://www.asus.com/Search/?SearchKey=#{search}")

File.open("results.txt","w") 

#This handles the url
search.each do |f|
    results.txt << PP.pp(page.links.find_all{|l| l.text =~ /#{search}/i},f)
end

Answer 1

当您使用http://www.asus.com/Search/?SearchKey=S56CA搜索S56CA时，该网站会重定向到http://www.asus.com/Notebooks_Ultrabooks/S56CA/页面。当搜索保留在结果页面上的TAICHI 21时，这与此不同。

每个都是不同的行为，因此代码应该以不同的方式处理每个案例。

我修改了原始代码以包含机械化日志记录，如下所示：

require 'nokogiri'
require 'mechanize'

# Logging 
require 'logger'

mechanize_logger = Logger.new('mechanize.log')
mechanize_logger.level = Logger::INFO

agent = Mechanize.new
agent.log = mechanize_logger

#User Agent masking
agent.user_agent_alias = 'Windows Mozilla'

search_terms = [ 'S56CA', 'TAICHI 21' ]
results_file = File.open( 'results.txt', 'w' )

#Take our search array, insert it into a query
search_terms.each do |search|
  page = agent.get("http://www.asus.com/Search/?SearchKey=#{search}")
  links =  page.links.find_all{ |l| l.text =~ /#{search}/i}
  links.each { |links_text| results_file.write( "#{links_text}\n" ) }
end 
results_file.close

运行此代码时，程序的输出只是ASUS TAICHI 21，写入results.txt。

mechanize.log文件包含以下内容，显示两次搜索之间的差异：

$ more mechanize.log 
I, [2013-01-30T17:49:49.036790 #2142]  INFO -- : Net::HTTP::Get: /Search/?SearchKey=S56CA
I, [2013-01-30T17:49:53.528281 #2142]  INFO -- : status: Net::HTTPFound 1.1 302 Moved Temporarily
I, [2013-01-30T17:49:53.529388 #2142]  INFO -- : follow redirect to: /Notebooks_Ultrabooks/S56CA/
I, [2013-01-30T17:49:53.530106 #2142]  INFO -- : Net::HTTP::Get: /Notebooks_Ultrabooks/S56CA/
I, [2013-01-30T17:49:53.939353 #2142]  INFO -- : status: Net::HTTPOK 1.1 200 OK
I, [2013-01-30T17:49:54.800423 #2142]  INFO -- : Net::HTTP::Get: /Search/?SearchKey=TAICHI%2021
I, [2013-01-30T17:49:55.269454 #2142]  INFO -- : status: Net::HTTPOK 1.1 200 OK

由于搜索页面包含内容Did you mean to search for，因此您可以使用它来区分代码中的行为。

我怎样才能进行机械化多重搜索？

1 个答案: