ruby_servlet_request_wrapper.rb

java_import javax.http.servlet.HttpServletRequestWrapper

class RubyRequestWrapper < HttpServletRequestWrapper
 class ArrayEnumeration
   include java.util.Enumeration
   def initialize(a)
     @array = a
     @pos = 0
   end
   def hasMoreElements
     @pos >= @array.length
   end
   def nextElement
     cur = @pos
     @pos += 1
     @array[cur]
   end
  end

  def initialize(request)
    super(request.env['java.servlet_request'])
    @request = request
  end

  def getParameter(key)
    @request.params[key]
  end

  def getParameterNames
    ArrayEnumeration.new(@request.keys)
  end

  def getParameterValues(key)
    [@request.params[key]].flatten.to_java(:string)
  end

  def getParameterMap
    @request.params
  end
end