Mendapatkan metadata PDF

Mendapatkan metadata PDF

Contoh ini membaca informasi dokumen standar, flag status file, dan kunci metadata khusus.

Langkah

1. Buat objek PdfFileInfo untuk PDF sumber.
2. Baca bidang metadata standar seperti subjek, judul, kata kunci, dan pembuat.
3. Periksa flag status file seperti apakah file valid, terenkripsi, dilindungi kata sandi, atau portfolio.
4. Baca nilai metadata khusus dengan getMetaInfo.
5. Tutup instans PdfFileInfo.

Contoh Java

public static void getPdfMetadata(Path inputFile) {
    PdfFileInfo pdfInfo = new PdfFileInfo(inputFile.toString());
    System.out.println("Subject: " + pdfInfo.getSubject());
    System.out.println("Title: " + pdfInfo.getTitle());
    System.out.println("Keywords: " + pdfInfo.getKeywords());
    System.out.println("Creator: " + pdfInfo.getCreator());
    System.out.println("Creation Date: " + pdfInfo.getCreationDate());
    System.out.println("Modification Date: " + pdfInfo.getModDate());
    System.out.println("Is Valid PDF: " + pdfInfo.isPdfFile());
    System.out.println("Is Encrypted: " + pdfInfo.isEncrypted());
    System.out.println("Has Open Password: " + pdfInfo.hasOpenPassword());
    System.out.println("Has Edit Password: " + pdfInfo.hasEditPassword());
    System.out.println("Is Portfolio: " + pdfInfo.hasCollection());
    String reviewer = pdfInfo.getMetaInfo("Reviewer");
    System.out.println("Reviewer: " + (reviewer == null || reviewer.isBlank() ? "No Reviewer metadata found." : reviewer));
    pdfInfo.close();
}