机械化不提交表格

我试图通过机械化登录到一个网站，我填写了所有的表格，然后提交，但每次我尝试它，我最终都在同一页面上，所以要么我被重定向回来（没有错误信息），或者表单没有提交。这是为什么？机械化不提交表格

代码

require 'mechanize' 
class Scraper 

    def initialize 
    @a = Mechanize.new { |agent| 
     agent.follow_meta_refresh = true 
    } 
    end 

    def login 


    @a.get("https://login.salesforce.com/") do |page| 
     red = page.forms.first do |form| 
     form.field_with(:type => "email").value = username 
     form.field_with(:type => "password").value = password 
     end.click_button 
     pp red 
     #puts main.title 
    end 
    end 
end 
s = Scraper.new 
s.login

初始页：

#<Mechanize::Page 
    {url #<URI::HTTPS:0x007f8f39d6fb30 URL:https://login.salesforce.com/>} 
    {meta_refresh} 
    {title "salesforce.com - Customer Secure Login Page"} 
    {iframes 
    #<Mechanize::Page::Frame 
    "marketing" 
    "https://www.salesforce.com/login-messages/messages.html?noroundedcorner">} 
    {frames} 
    {links 
    #<Mechanize::Page::Link "Salesforce" "http://www.salesforce.com"> 
    #<Mechanize::Page::Link 
    "Forgot your password?" 
    "/secur/forgotpassword.jsp?locale=us"> 
    #<Mechanize::Page::Link 
    "Sign up for free." 
    "https://www.salesforce.com/form/trial/freetrial.jsp?d=70130000000Enus">} 
    {forms 
    #<Mechanize::Form 
    {name "login"} 
    {method "POST"} 
    {action "https://login.salesforce.com/"} 
    {fields 
     [hidden:0x3fc79cec63ac type: hidden name: un value: ] 
     [hidden:0x3fc79cec6244 type: hidden name: width value: ] 
     [hidden:0x3fc79cec60c8 type: hidden name: height value: ] 
     [hidden:0x3fc79cec5efc type: hidden name: hasRememberUn value: true] 
     [hidden:0x3fc79cec5d58 type: hidden name: startURL value: ] 
     [hidden:0x3fc79cec5bc8 type: hidden name: loginURL value: ] 
     [hidden:0x3fc79cec5a38 type: hidden name: loginType value: ] 
     [hidden:0x3fc79cec987c type: hidden name: useSecure value: true] 
     [hidden:0x3fc79cec969c type: hidden name: local value: ] 
     [hidden:0x3fc79cec9520 type: hidden name: lt value: standard] 
     [hidden:0x3fc79cec9340 type: hidden name: qs value: ] 
     [hidden:0x3fc79cec9174 type: hidden name: locale value: ] 
     [hidden:0x3fc79cec8f80 type: hidden name: oauth_token value: ] 
     [hidden:0x3fc79cec8db4 type: hidden name: oauth_callback value: ] 
     [hidden:0x3fc79cec8be8 type: hidden name: login value: ] 
     [hidden:0x3fc79cec89cc type: hidden name: serverid value: ] 
     [hidden:0x3fc79cec8814 type: hidden name: display value: page] 
     [field:0x3fc79cec8670 type: email name: username value: ] 
     [field:0x3fc79cec84e0 type: password name: pw value: ]} 
    {radiobuttons} 
    {checkboxes 
     [checkbox:0x3fc79cec833c type: checkbox name: rememberUn value: ]} 
    {file_uploads} 
    {buttons [button:0x3fc79cecac2c type: name: Login value: ]}>}>

最后一页：

#<Mechanize::Page 
{url #<URI::HTTPS:0x007f9d1d250960 URL:https://login.salesforce.com/>} 


{meta_refresh} 
    {title "salesforce.com - Customer Secure Login Page"} 
    {iframes 
    #<Mechanize::Page::Frame 
    "marketing" 
    "https://www.salesforce.com/login-messages/messages.html? r=https%3A%2F%2Flogin.salesforce.com%2F&noroundedcorner">} 
    {frames} 
    {links 
    #<Mechanize::Page::Link "Salesforce" "http://www.salesforce.com"> 
    #<Mechanize::Page::Link 
    "Forgot your password?" 
    "/secur/forgotpassword.jsp?locale=us"> 
    #<Mechanize::Page::Link 
    "Sign up for free." 
    "https://www.salesforce.com/form/trial/freetrial.jsp?d=70130000000Enus">} 
    {forms 
    #<Mechanize::Form 
    {name "login"} 
    {method "POST"} 
    {action "https://login.salesforce.com/"} 
    {fields 
     [hidden:0x3fce8e93aaac type: hidden name: un value: ] 
     [hidden:0x3fce8e93a8a4 type: hidden name: width value: ] 
     [hidden:0x3fce8e93a638 type: hidden name: height value: ] 
     [hidden:0x3fce8e93a390 type: hidden name: hasRememberUn value: true] 
     [hidden:0x3fce8e93a19c type: hidden name: startURL value: null] 
     [hidden:0x3fce8e939f58 type: hidden name: loginURL value: null] 
     [hidden:0x3fce8e939cc4 type: hidden name: loginType value: ] 
     [hidden:0x3fce8e9399a4 type: hidden name: useSecure value: true] 
     [hidden:0x3fce8e93979c type: hidden name: local value: ] 
     [hidden:0x3fce8e939648 type: hidden name: lt value: standard] 
     [hidden:0x3fce8e93d414 type: hidden name: qs value:r=https%3A%2F%2Flogin.salesforce.com%2F] 
     [hidden:0x3fce8e93d284 type: hidden name: locale value: ] 
     [hidden:0x3fce8e93d0cc type: hidden name: oauth_token value: ] 
     [hidden:0x3fce8e93cf50 type: hidden name: oauth_callback value: ] 
     [hidden:0x3fce8e93cd98 type: hidden name: login value: ] 
     [hidden:0x3fce8e93cc44 type: hidden name: serverid value: ] 
     [hidden:0x3fce8e93cab4 type: hidden name: display value: page] 
     [field:0x3fce8e93c780 type: email name: username value: ] 
     [field:0x3fce8e93c4c4 type: password name: pw value: ]} 
    {radiobuttons} 
    {checkboxes 
     [checkbox:0x3fce8e93c334 type: checkbox name: rememberUn value: ]} 
    {file_uploads} 
    {buttons [button:0x3fce8e93b9d4 type: name: Login value: ]}>}>

什么是错我的代码？

来源

2013-07-24 MichaelFine

该网站使用Javascript来处理登录，机械化无法处理。您可以使用类似Selenium的东西访问该网站。

来源

2013-07-24 14:19:30 nTraum

[watir]（http://watir.com/）和[watir-webdriver]（http://watirwebdriver.com/）是其他选择。 – orde

或者你可以弄清楚如何做到这一点。 – pguardiario

具体来说，在javascript进行修改之后，找出POST请求中发送的内容。如果它不是动态的，那么javascript不需要执行。机械化应该在这种情况下正常工作。 –

在有隐藏字段un，width，height还需要包含用户名和一些数字，除了包含用户名的username场形式。

[hidden:0x3fce8e93aaac type: hidden name: un value: ] 
    [hidden:0x3fce8e93a8a4 type: hidden name: width value: ] 
    [hidden:0x3fce8e93a638 type: hidden name: height value: ]

您可以使用Chrome的督察网络选项卡下的监控，实际上被发送到服务器的请求的内容（启用了“保留日志”选项），它就会由JavaScript修改后。

来源

2014-10-14 23:54:23

机械化不提交表格

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