html_to_pdf.rb

# trying to print an xhtml page to a pdf
# using flying saucer and itext
#
# after patching the maven gem with this:  http://gist.github.com/97636
# install these maven jars:
# jruby -S gem maven bouncycastle bcmail-jdk14 136
# jruby -S gem maven bouncycastle bcprov-jdk14 136
# jruby -S gem maven com/lowagie itext 2.1.0
# jruby -S gem maven org/xhtmlrenderer core-renderer R8pre2

require 'rubygems'
require 'bcmail-jdk14'
require 'bcprov-jdk14'
require 'itext'
require 'core-renderer'

# Example:
#
#   JavaIO::File.new("dummy.txt")
#
module JavaIO     
  include_package "java.io"
end

module JavaNET
  include_package "java.net"
end

java_import java.net.URI

java_import com.lowagie.text.pdf.PdfWriter
java_import com.lowagie.text.Document
java_import com.lowagie.text.Paragraph

java_import com.lowagie.text.DocumentException
java_import org.xhtmlrenderer.pdf.ITextRenderer

# uri = JavaNET::URI.new('http://localhost:3000/pages/48/print')
# source = JavaIO::File.new(uri)
File.open('page.pdf', 'w') do |output|
  renderer = ITextRenderer.new
  renderer.setDocument('http://localhost:3000/pages/48/print')
  renderer.layout
  renderer.createPDF(output)
end