Question

所以我试图使用ruby mechanize和hpricot提取我网站的电子邮件。我试图在我的管理方面的所有页面上进行循环，并用hpricot解析页面。这么好。然后我得到：

Exception `Net::HTTPBadResponse' at /usr/lib/ruby/1.8/net/http.rb:2022 - wrong status line: *SOME HTML CODE HERE*

当它解析一堆页面时，它以超时开始，然后打印页面的html代码。不明白为什么？我怎么调试呢？看起来机械化可以连续超过10页？可能吗？？感谢



require 'logger'
require 'rubygems'
require 'mechanize'
require 'hpricot'
require 'open-uri'

class Harvester

def initialize(page)
    @page=page
    @agent = WWW::Mechanize.new{|a| a.log = Logger.new("logs.log") }
    @agent.keep_alive=false
    @agent.read_timeout=15

end

def login
    f = @agent.get( "http://****.com/admin/index.asp") .forms.first
    f.set_fields(:username => "user", :password =>"pass")
        f.submit

  end

def harvest(s)
    pageNumber=1
    #@agent.read_timeout = 
    s.upto(@page) do |pagenb|

    puts "*************************** page= #{pagenb}/#{@page}***************************************"      
    begin
        #time=Time.now
        #search=@agent.get( "http://****.com/admin/members.asp?action=search&term=&state_id=&r=500&p=#{page}")          
        extract(pagenb)

    rescue => e
        puts  "unknown #{e.to_s}"
        #puts  "url:http://****.com/admin/members.asp?action=search&term=&state_id=&r=500&p=#{page}"
        #sleep(2)
        extract(pagenb)

    rescue Net::HTTPBadResponse => e
        puts "net exception"+ e.to_s
    rescue WWW::Mechanize::ResponseCodeError => ex
        puts "mechanize error: "+ex.response_code   
    rescue Timeout::Error => e
        puts "timeout: "+e.to_s
    end


end


end

def extract(page)
      #puts search.body
            search=@agent.get( "http://***.com/admin/members.asp?action=search&term=&state_id=&r=500&p=#{page}")
            doc = Hpricot(search.body)

        #remove titles
        #~ doc.search("/html/body/div/table[2]/tr/td[2]/table[3]/tr[1]").remove 

        (doc/"/html/body/div/table[2]/tr/td[2]/table[3]//tr").each do |tr|              
            #delete the phone number from the html
            temp = tr.search("/td[2]").inner_html
            index = temp.index('<')
            email = temp[0..index-1]
            puts  email
            f=File.open("./emails", 'a')
            f.puts(email)
            f.close     
        end 


end

end

puts "starting extacting emails ... "

start =ARGV[0].to_i

h=Harvester.new(186)
h.login
h.harvest(start)

Answer 1

Mechanize将页面的完整内容放入历史记录中，这可能会在浏览多个页面时导致问题。要限制历史记录的大小，请尝试

@mech = WWW::Mechanize.new do |agent|
  agent.history.max_size = 1
end

机械化html抓取问题

1 个答案: