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本文介绍如何使用Java编程为PDF文档设置保护措施。可设定仅用于查看的密码，输入后只能阅读文档内容，禁止编辑；也可设定具备编辑权限的密码，输入后可对文档进行修改操作，实现不同层级的访问控制与安全防护。 1、 在Java项目中创建一个名为Lib的文件夹。

GPDF is a PHP/Laravel package for generating Arabic, RTL, and multilingual PDFs with native support for 17 built-in Arabic fonts, S3 cloud storage, and enterprise-ready features. Built as a DomPDF ...

This project makes it easy to export the contents of any ebook in your Kindle library as text, PDF, EPUB, or as a custom, AI-narrated audiobook. It only requires a valid Amazon Kindle account and an ...

Mitchell Grant is a self-taught investor with over 5 years of experience as a financial trader. He is a financial content strategist and creative content editor. Timothy Li is a consultant, accountant ...

The U.S. CubeSat market is estimated at USD 0.22 billion in 2025E and is expected to grow at an 18.1% CAGR from 2026–2033, reaching USD 0.82 billion, driven by higher government and defense spending, ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...