如何使用NodeJS/ReactJS/PHP提取PDF文件的书签(TOC)？

const { PDFDocument } = require('pdf-lib');

async function extractBookmarks(pdfPath) {
  const pdfBytes = await fs.promises.readFile(pdfPath);
  const pdfDoc = await PDFDocument.load(pdfBytes);

  const bookmarks = pdfDoc.getOutlines();
  return bookmarks;
}

extractBookmarks('path/to/your/file.pdf').then(bookmarks => {
  console.log(bookmarks);
});

import React, { useEffect } from 'react';
import { Document, Page } from 'react-pdf';
import { extractBookmarks } from './backend'; // 假设你有一个Node.js后端函数

function PDFViewer({ filePath }) {
  const [bookmarks, setBookmarks] = React.useState([]);

  useEffect(() => {
    extractBookmarks(filePath).then(setBookmarks);
  }, [filePath]);

  return (
    <div>
      <Document file={filePath}>
        {Array.from(new Array(10), (el, index) => (
          <Page key={`page_${index + 1}`} pageNumber={index + 1} />
        ))}
      </Document>
      <ul>
        {bookmarks.map((bookmark, index) => (
          <li key={index}>{bookmark.title}</li>
        ))}
      </ul>
    </div>
  );
}

export default PDFViewer;

require_once('vendor/autoload.php');

use setasign\Fpdi\Fpdi;

$pdf = new Fpdi();
$pageCount = $pdf->setSourceFile('path/to/your/file.pdf');
$bookmarks = [];

for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
    $templateId = $pdf->importPage($pageNo);
    $size = $pdf->getTemplateSize($templateId);

    $pdf->AddPage($size['orientation'], $size);
    $pdf->useTemplate($templateId);

    $bookmarks = array_merge($bookmarks, $pdf->getOutlines());
}

print_r($bookmarks);