爲什麼機械化不遵循鏈接

Question

我想跟隨Mechanize的鏈接，但它似乎並沒有工作，語法看起來是正確的，我引用這個不正確，或者我需要做別的嗎？

問題區域

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

全碼

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 

Answer 1

你應該抓住（http://www.charlesproxy.com/）查爾斯的副本或東西，可以讓你觀看，當您提交表單，會發生什麼從您的瀏覽器。無論如何，你的問題是，這部分：

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

正在恢復，看起來像這樣一個HTML片段：

<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> 

所以你確實需要直接調用此或報廢了的self.location。 href和有你的代理執行GET：

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

如果你要做到這一點，這個工程：

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 

快樂刮