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为什么机械化没有遵循链接

mechanize ruby

Ninja2k · 技术社区 · 12 年前

我正试图遵循机械化的链接,但它似乎不起作用,语法似乎是正确的,我是引用错误了还是需要做其他事情?

问题区域

agent.page.links_with(:text => 'VG278H')[2].click

完整代码

require 'rubygems'
require 'mechanize'
require 'open-uri'

agent = Mechanize.new

agent.get ("http://icecat.biz/en/")

#Show all form fields belonging to the first form
form = agent.page.forms[0].fields

#Enter VG278H into the text box lookup_text, submit the data
agent.page.forms[0]["lookup_text"] = "VG278H"
agent.page.forms[0].submit  #Results of this is stored in Mechanize agent.page object

#Call agent.page with our results and assign them to a variable page
page = agent.page

agent.page.links_with(:text => 'VG278H')[2].click

doc = page.parser
puts doc

1 回复 | 直到 12 年前

rainkinz 12 年前

你应该找一本查尔斯的书( http://www.charlesproxy.com/ )或者可以让你从浏览器中查看提交表单时发生的事情。无论如何,你的问题是这部分:

agent.page.forms[0]["lookup_text"] = "VG278H"
agent.page.forms[0].submit

正在返回一个html片段,该片段如下所示:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><script>self.location.href="http://icecat.us/index.cgi?language=en&new_search=1&lookup_text=VG278H"</script>

因此,您实际上需要直接调用此命令,或者取消self.locationhref,并让您的代理执行get:

page = agent.get("http://icecat.us/index.cgi?language=en&new_search=1&lookup_text=VG278H")

如果你打算这样做,这是有效的:

require 'rubygems'
require 'mechanize'
require 'open-uri'

agent = Mechanize.new 

agent.get ("http://icecat.biz/en/")

page = agent.get("http://icecat.us/index.cgi?language=en&new_search=1&lookup_text=VG278H")

page = page.links_with(:text => 'VG278H')[2].click

doc = page.parser
puts doc

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