iText 生成pdf内部链接

最新推荐文章于 2024-02-04 16:58:19 发布

最新推荐文章于 2024-02-04 16:58:19 发布 · 146 阅读

文章标签：

#java #php

本文介绍如何使用iText库在PDF文档中创建不同类型的链接，包括内部链接、外部网页链接及指向其他PDF文件的远程链接。通过定义字体样式、设置锚点和目的地等步骤实现交互式阅读体验。

http://www.geek-tutorials.com/java/itext/itext_bookmark_anchor.php

package com.geek.tutorial.itext.bookmarks; import com.lowagie.text.Document; import com.lowagie.text.pdf.PdfWriter; import com.lowagie.text.Chunk; import com.lowagie.text.Font; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfOutline; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfAction; import java.io.FileOutputStream; import java.awt.Color; public class Anchor { public Anchor()throws Exception{ Document document = new Document(); PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("anchor.pdf")); document.open(); // Code 1 Font font = new Font(); font.setColor(Color.BLUE); font.setStyle(Font.UNDERLINE); document.add(new Chunk("Chapter 1")); document.add( new Paragraph( new Chunk("Press here to go chapter 2", font) .setLocalGoto("2")));// Code 2 document.newPage(); document.add(new Chunk("Chapter 2") .setLocalDestination("2")); document.add( new Paragraph( new Chunk("http://www.geek-tutorials.com", font) .setAnchor("http://www.geek-tutorials.com")));//Code 3 document.add( new Paragraph( new Chunk("Open outline.pdf chapter 3", font) .setRemoteGoto("outline.pdf", "3")));//Code 4 document.close(); } public static void main(String[] args) { try{ Anchor anchor = new Anchor(); }catch(Exception e){ System.out.println(e); } } }

Code 1
Define a Font instance with BLUE and UNDERLINE styles. Just to make the links in this example look like html hyperlink .

Code 2
You can set a chunk of text to act as a link to direct reader to particular content on the same PDF as they click on the link.

First you set a link to a chunk. Code below instruct the chunk of text to be link to a destination labeled as "2".

document.add(
	new Paragraph(
	new Chunk("Press here to go chapter 2", font)
	.setLocalGoto("2")));

Then set a destination.

document.add(new Chunk("Chapter 2").setLocalDestination("2"));

When reader click on the "Press here to go chapter 2", PDF reader will jump to the location where destination "2" is set.

Code 3
This code create a external link that display web content in default internet browser.

document.add(
new Paragraph(
new Chunk("http://www.geek-tutorials.com", font)
.setAnchor("http://www.geek-tutorials.com")));//Code 3

Code 4
This code create a remote link to external PDF file that located in the local drive. It will open outline.pdf file and jump to destination "3".

		
document.add(
new Paragraph(
new Chunk("Open outline.pdf chapter 3", font)
.setRemoteGoto("outline.pdf", "3")));//Code 4

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