How can I perform a Head request using mechanize in Ruby

问题

I can perform a HEAD request with Faraday (Faraday.head url), but I am using Mechanize on my current project.

I would like to grab a value from the header (filename) without downloading the file. Does the Mechanize gem provide such an option? I am using v2.0.

回答1:

Just like get but it's head instead:

page = agent.head 'http://www.google.com/'
page.body.length
#=> 0
page.header.keys
#=> ["date", "expires", "cache-control", "content-type", "set-cookie", "p3p", "server", "x-xss-protection", "x-frame-options", "transfer-encoding"]

来源：https://stackoverflow.com/questions/13872530/how-can-i-perform-a-head-request-using-mechanize-in-ruby