为什么机械化没有遵循链接

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

快乐的刮擦