Poi-Pdf之生成带目录的pdf实例

package com.blog.test;import java.awt.Color;import java.io.FileOutputStream;import com.itextpdf.text.BaseColor;import com.itextpdf.text.Chapter;import com.itextpdf.text.Chunk;import com.itextpdf.text.Document;import com.itextpdf.text.Element;import com.itextpdf.text.Font;import com.itextpdf.text.FontFactory;import com.itextpdf.text.PageSize;import com.itextpdf.text.Paragraph;import com.itextpdf.text.Section;import com.itextpdf.text.pdf.PdfWriter;/** * Creates a document with outlines (bookmarks) using the Chapter and Section object. *  * @author blowagie */public class ChapterSection {/** * Creates a document with outlines. *  * @param args *            no arguments needed */public static void main(String[] args) {                System.out.println("Chapters and Sections");                // step 1: creation of a document-object        Document document = new Document(PageSize.A4, 50, 50, 50, 50);        try {            // step 2: we create a writer that listens to the document            PdfWriter writer=PdfWriter.getInstance(document, new FileOutputStream("ChapterSection.pdf"));            // step 3: we open the document            writer.setViewerPreferences(PdfWriter.PageModeUseOutlines);            document.open();            // step 4: we add content to the document            // we define some fonts            Font chapterFont = FontFactory.getFont(FontFactory.HELVETICA, 24.0f, Font.NORMAL, new BaseColor(255, 0, 0));            Font sectionFont = FontFactory.getFont(FontFactory.HELVETICA, 20, Font.NORMAL, new BaseColor(0, 0, 255));            Font subsectionFont = FontFactory.getFont(FontFactory.HELVETICA, 18, Font.BOLD, new BaseColor(0, 64, 64));            // we create some paragraphs            Paragraph blahblah = new Paragraph("blah blah blah blah blah blah blaah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah");            Paragraph blahblahblah = new Paragraph("blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blaah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah");            // this loop will create 7 chapters            for (int i = 1; i < 8; i++) {                Paragraph cTitle = new Paragraph("This is chapter " + i, chapterFont);                Chapter chapter = new Chapter(cTitle, i);                // in chapter 4 we change the alignment to ALIGN_JUSTIFIED                if (i == 4) {                    blahblahblah.setAlignment(Element.ALIGN_JUSTIFIED);                    blahblah.setAlignment(Element.ALIGN_JUSTIFIED);                    chapter.add(blahblah);                }                // in chapter 5, the alignment is changed again                if (i == 5) {                    blahblahblah.setAlignment(Element.ALIGN_CENTER);                    blahblah.setAlignment(Element.ALIGN_RIGHT);                    chapter.add(blahblah);                }                // the alignment is changed to ALIGN_JUSTIFIED again                if (i == 6) {                    blahblahblah.setAlignment(Element.ALIGN_JUSTIFIED);                    blahblah.setAlignment(Element.ALIGN_JUSTIFIED);                }                // in every chapter 3 sections will be added                for (int j = 1; j < 4; j++) {                    Paragraph sTitle = new Paragraph("This is section " + j + " in chapter " + i, sectionFont);                    Section section = chapter.addSection(sTitle, 1);                    // for chapters > 2, the outine isn't open by default                    if (i > 2) section.setBookmarkOpen(false);                    // in all chapters except the 1st one, some extra text is added to section 3                    if (j == 3 && i > 1) {                    section.setIndentationLeft(72);                        section.add(blahblah);                    section.add(new Paragraph("test"));                    }                    // in every section 3 subsections are added                    for (int k = 1; k < 4; k++) {                        Paragraph subTitle = new Paragraph("This is subsection " + k + " of section " + j, subsectionFont);                        Section subsection = section.addSection(subTitle, 3);                        // in the first subsection of section 3, extra text is added                        if (k == 1 && j == 3) {                            subsection.add(blahblahblah);                        }                        subsection.add(blahblah);                    }                    // in the section section of every chapter > 2 extra text is added                    if (j == 2 && i > 2) {                        section.add(blahblahblah);                    }                    // a new page is added after the second section in Chapter 1                    if (j == 2 && i == 1) {                    section.add(Chunk.NEXTPAGE);                    }                }                document.add(chapter);            }        }        catch(Exception de) {            de.printStackTrace();        }        // step 5: we close the documentdocument.close();}}