如何限制用户下载或保存pdf文件? [英] How to restrict user from downloading or saving pdf file?

问题描述

可能重复:
防止PDF文件下载和打印

Possible Duplicate:
Prevent PDF file from downloading and printing

在我当前的symfony项目中(在管理部分中)，我上传了pdf文件并使用JavaScript打开了该文件，但我想限制用户下载或保存该pdf文件吗?

In my current symfony project (in admin section) I uploaded pdf file and open it by using JavaScript, but I want to restrict user to download or save for that pdf?

那么我可以限制用户下载或保存pdf吗?

So is it possible to me to restrict user to download or save pdf?

我的意思是用户只能查看该pdf的内容，我想禁用该pdf的所有浏览器的下载或保存选项.

I means user can only view content of that pdf, i want to disable download or save options of all browsers for that pdf.

pdf文件仅从服务器打开.

pdf file is open from server only.

echo "<span onclick=\"clickme('$pdf_name')\";>view</span>";

成功文件代码:

<script type="text/javascript">
   function clickme(file_name){
     window.open(file_name); 
   }   
</script>

谢谢你.

推荐答案

要阻止人们下载任何东西，几乎要阻止PDF的下载，实际上是不可能的.恐怕您将不得不采用其他选择，例如仅显示文档预览或使用水印.

It's practically impossible to prevent people from downloading anything, much less PDF's. I'm afraid you're gonna have to go with alternatives, such as only showing a preview of the document or using watermarks.

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