保护文件下载 [英] Protect file downloading

问题描述

目前，我们正在将PDF文件存储在内容管理系统(WEB)中，我们已经升级了PDF文件，仅用于查看目的，但是当他们打开文件时，他们可以下载它并可以保存.我的问题是有什么方法可以保护pdf文件免于下载和保存.


谢谢.

Hi,

We are currently storing PDF File in a Content Management System (WEB) we have upoaded PDF Files for viewing purposes only but when they open it they can download it and can save the same. My question is is there a way where i can protect pdf file from downloading and saving.


Thank you.

推荐答案

如果已加载文件以供查看，则该文件将存储在客户端计算机的缓存中，可从中进行恢复.当它在屏幕上时，内容也可能被捕获为图像.

您可以使用密码保护PDF文档，并禁止复制，编辑和打印.

这个问题不是一个新问题.将Google与防止保存pdf"配合使用可为您带来数百万个结果.一个很好的例子是: ^ ]

If a file is loaded for viewing, it is stored in the cache on the client computer from where it can be recovered. While it is on the screen, the content may be also captured as image.

You can protect the PDF document with a password and disallow copying, editing, and printing.

This question is not a new one. Using Google with ''prevent saving pdf'' gives you millions of results. A good one is this: http://answers.acrobatusers.com/How-I-disable-ability-user-save-copy-PDF-The-file-online-network-drive-q2454.aspx[^]

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