我是 Ruby 新手,在我的第一个脚本任务中,我被要求编写一个网络抓取脚本来从 GoDaddy 抓取我们的 DNS 列表的元素。
在抓取链接时遇到问题,然后我需要关注链接。我需要从下面的“GoToSecondaryDNS”js 元素中获取链接。我正在使用机械化和 Nokogiri:
<td class="listCellBorder" align="left" style="width:170px;">
<div style="padding-left:4px;">
<div id="gvZones21divDynamicDNS"></div>
<div id="gvZones21divMasterSlave" cicode="41022" onclick="GoToSecondaryDNS('iwanttoscrapethislink.com',0)" class="listFeatureButton secondaryDNSNoPremium" onmouseover="ShowSecondaryDNSAd(this, event);" onmouseout="HideAdInList(event);"></div>
<div id="gvZones21divDNSSec" cicode="41023" class="listFeatureButton DNSSECButtonNoPremium" onmouseover="ShowDNSSecAd(this, event);" onmouseout="HideAdInList(event);" onclick="UpgradeLinkActionByID('gvZones21divDNSSec'); return false;" useClick="true" clickObj="aDNSSecUpgradeClicker"></div>
<div id="gvZones21divVanityNS" onclick="GoToVanityNS('iwanttoscrapethislink.com',0)" class="listFeatureButton vanityNameserversNoPremium" onmouseover="ShowVanityNSAd(this, event);" onmouseout="HideAdInList(event);"></div>
<div style="clear:both;"></div>
</div>
</td>
如何抓取链接“iwanttoscrapethislink.com”,然后与 onclick 交互以跟随链接并使用 Ruby 抓取下一页上的内容?
到目前为止,我对代码有一个简单的开始:
require 'rubygems'
require 'mechanize'
require 'open-uri'
def get_godaddy_data(url)
web_agent = Mechanize.new
result = nil
### login to GoDaddy admin
page = web_agent.get('https://dns.godaddy.com/Default.aspx?sa=')
## there is only one form and it is the first form on thepage
form = page.forms.first
form.username = 'blank'
form.password = 'blank'
## form.submit
web_agent.submit(form, form.buttons.first)
site_name = page.css('div.gvZones21divMasterSlave onclick td')
### export dns zone data
page = web_agent.get('https://dns.godaddy.com/ZoneFile.aspx?zone=' + site_name + '&zoneType=0&refer=dcc')
form = page.forms[3]
web_agent.submit(form, form.buttons.first).save(uri.host + 'scrape.txt')
## end
end
### read export file
##return File.open(uri.host + 'scrape.txt', 'rb') { |file| file.read }
end
def scrape_dns(url)
site_name = page.css('div.gvZones21divMasterSlave onclick td')
LIST_URL = "https://dns.godaddy.com/ZoneFile.aspx?zone=" + site_name + '&zoneType=0&refer=dcc"
page = Nokogiri::HTML(open(LIST_URL))
#not sure how to scrape onclick urls and then how to click through to continue scraping on the second page for each individual DNS
end