将.doc或.pdf转换为图像并在Ruby中显示缩略图？

将.doc或.pdf转换为图像并在Ruby中显示缩略图，可以通过以下步骤实现：

安装必要的库

首先，需要安装以下库：

ruby-poppler：用于将PDF文件转换为图像
rmagick：用于将图像处理为缩略图
docx：用于将.docx文件转换为图像

可以使用以下命令安装这些库：

gem install ruby-poppler
gem install rmagick
gem install docx

将PDF文件转换为图像

使用ruby-poppler库将PDF文件转换为图像：

require 'poppler'

pdf_file = Poppler::Document.new('path/to/your/file.pdf')
pdf_file.each_page do |page|
  page.save_as('path/to/save/image.png')
end

将.doc或.docx文件转换为图像

使用docx库将.doc或.docx文件转换为图像：

require 'docx'

docx_file = Docx::Document.open('path/to/your/file.docx')

docx_file.each_paragraph do |paragraph|

paragraph.each_run do |run|

run.each_text_run do |text_run|

  text_run.each_fragment do |fragment|

    fragment.each_line do |line|

      line.each_fragment do |fragment|

        fragment.each_text_run do |text_run|

          text_run.each_fragment do |fragment|

            fragment.each_line do |line|

              line.each_fragment do |fragment|

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