Git上下载的PDF开发工具（Java），目前是最新版本。The iText 7 Core/Community release contains: kernel-x.y.z.jar: low-level functionality io-x.y.z.jar: low-level functionality layout-x.y.z.jar: high-level functionality forms-x.y.z.jar: AcroForms pdfa-x.y.z.jar: PDF/A-specific functionality pdftest-x.y.z.jar: test helper classes barcode-x.y.z.jar: use this if you want to create bar codes hyph-x.y.z.jar: use this if you want text to be hyphenated font-asian-x.y.z.jar: use this is you need CJK functionality (Chinese / Japanese / Korean) sign-x.y.z.jar: use this if you need support for digital signatures