Ruby gem从可填写的PDF中提取表单数据

1 回答

• 1

  由于 dump_data_fields 方法具有非常标准化的结构，因此该方法应该适用于您需要它将输出一个Array，每个字段都是一个哈希对象 .

  def parse_pdf_dump(file)
    file = open(file,&:read)
    fields = file.split("---").delete_if{|f| f.empty?}
    #Create an Array of the fields 
    fields.map do |field|
      #Create a have of attribute => value for each field attribute
      Hash[
         field.split("\n").map do |line|
              split_line = line.split(":")
              #grab the name of the attribute
              name = split_line.shift
              #grab the value of the attribute
              #join is used in the case that the data originally had a : in it
              val = split_line.join(":")
              unless f_name.nil?
               [name.downcase, val.strip]
              end
         end
      ]
    end
  end
  

  使用active_pdftk调用如下

  require 'active_pdftk'
  output_path = '/data_fields.txt'
  pdftk = ActivePdftk::Wrapper.new(:path => [YOUR PATH TO PDFTK BINARY OR EXE])
  pdftk.dump_data_fields([YOUR PDF], :output => output_path)
  fields_array = parse_pdf_dump(output_path)
  %x( rm output_path)
  

  因此，您将使用pdftk转储数据字段，将它们解析为数组 fields_array ，然后删除文本文件 .

  回复于 2024-04-28T16:53:39+08:00