java 读取 pdf 中的书签-凯发线上登陆下载网址

本文介绍使用spire.pdf for java来读取pdf中的书签。

import com.spire.pdf.*;
import com.spire.pdf.bookmarks.pdfbookmark;
import com.spire.pdf.bookmarks.pdfbookmarkcollection;
import java.io.filewriter;
import java.io.ioexception;
public class getbookmark {
    public static void main(string[] args) {
        //加载包含书签的pdf文档
        pdfdocument pdf = new pdfdocument();
        pdf.loadfromfile("addbookmarks.pdf");
        //获取书签集合
        pdfbookmarkcollection bookmarkcollection = pdf.getbookmarks();
        //实例化stringbuilder类
        stringbuilder stringbuilder = new stringbuilder();
        //定义方法获取书签
        getbookmarktitle(bookmarkcollection, stringbuilder);
        //声明txt文件，并将获得的多级书签写入到文件.txt
        filewriter writer;
        try {
            writer = new filewriter("读取的书签.txt");
            writer.write(stringbuilder.tostring());
            writer.flush();
        } catch (ioexception e) {
            e.printstacktrace();
        }
        pdf.dispose();
    }
    //定义方法获取书签标题
static void getbookmarktitle(pdfbookmarkcollection bookmarkcollection, stringbuilder stringbuilder)
    {
        if (bookmarkcollection.getcount()> 0)
        {
            for(int i = 0 ; i< bookmarkcollection.getcount(); i   )
            {
                pdfbookmark parentbookmark = bookmarkcollection.get(i);
                stringbuilder.append(parentbookmark.gettitle());
                //递归文档多级书签
                getbookmarktitle(parentbookmark, stringbuilder);
            }
        }
    }
}

书签读取结果：