背景： 下面的脚本登录到我的 salesforce.com 帐户并尝试单击一堆“下载”链接并将生成的 .zip 导出文件保存在本地。
我正在使用 jruby 和celerity（它是一个围绕 htmlunit 的 jruby 包装器，一个无头浏览器，也支持 javascript）。
要求是它在没有安装 gui/浏览器的情况下从LINUX命令行运行。无头浏览器还需要支持 javascript，否则会salesforce.com返回错误并且不会呈现下载链接。（我尝试了 CURL，但它失败了，因为它不支持 javascript）。（目前，当从WINDOWS框上的命令行运行时，该脚本工作正常）
问题：
当我尝试从 linux 机器运行此程序时，我收到以下错误，并且脚本似乎没有登录到 salesforce。我相信 .js 警告没问题（我认为），但我不明白VBScript not supported in Window.execScript()警告的含义？：
[root@ip-10-114-241-55 ~]# jruby download_sf_export_files.rb
Jan 18, 2011 2:16:41 AM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://www.salesforce.com/common/assets/js/global2.js?date=100817', but got 'application/x-javascript'.
Jan 18, 2011 2:16:41 AM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://www.salesforce.com/common/assets/thirdparty/omniture/s_code3.js?date=101012', but got 'application/x-javascript'.
Jan 18, 2011 2:38:05 AM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://na7.salesforce.com/static/101210/js/functions.js', but got 'application/x-javascript'.
Jan 18, 2011 2:38:06 AM com.gargoylesoftware.htmlunit.javascript.host.Window jsxFunction_execScript
WARNING: VBScript not supported in Window.execScript().
-----install instructions------
download jruby: http://jruby.org/download
install gem from command line: jruby -S gem install celerity
run script from command line: jruby download_sf_export_files.rb
-----download_sf_export_files.rb-------
require "rubygems"
require "celerity"
browser = Celerity::Browser.new
browser.goto('https://na7.salesforce.com')
browser.text_field(:name, 'username').value = 'myuserlogin@domain.com'
browser.text_field(:name, 'pw').value = 'mysecretpassword'
browser.button(:name, 'Login').click
browser.goto('https://na7.salesforce.com/ui/setup/export/DataExportPage/d')
## assume multiple 'download' links if a large SF data export
## group all links in a map, iterate and click each one
i=1
hrefs = browser.links.map { |link| link.href if link.text =~ /download/ }.compact hrefs.each do |href|
browser.link(:url, href).download
puts "found a 'download' link on page, clicking link..."
io = browser.link(:text, "download").download
File.open("sf_zip_file_#{i}.zip", "w+") { |file| file.write(io.read) }
i+=i
end