Java Requires Chilkat v11.7.0+

Extract Text from a PDF that Forbids Copying

See more PDF Text Extraction Examples

Demonstrates a PDF that opens without a password but whose permissions do not allow copying text. The "text", "markdown", "search" and "tables" operations fail with that reason; "assess" always works. Loading the PDF with the OwnerPassword property set grants owner rights, and extraction works. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Pdf;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // The PDF used in this example (owner password: owner-secret; copying not permitted) is available at no_copy_permission.pdf

        Pdf pdf = new Pdf();
        JsonObject json = new JsonObject();
        JsonObject jsonOut = new JsonObject();

        // The PDF opens without a password.
        try {
            pdf.loadFile("qa_data/pdf/no_copy_permission.pdf");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Extracting text is refused, because the PDF's permissions do not allow copying.
        try {
            pdf.extractText("text", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println("Extraction refused: " + e.getLastErrorText());
        }

        // "assess" reports only counts and ratings, never text, so it is always allowed.
        try {
            pdf.extractText("assess", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("rating: " + jsonOut.stringOf("quality.rating"));

        // Load with the owner password to get owner rights, which include copying.
        pdf.setOwnerPassword("owner-secret");
        try {
            pdf.loadFile("qa_data/pdf/no_copy_permission.pdf");

            pdf.extractText("text", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println(jsonOut.stringOf("text"));

        // Sample output:

        // Extraction refused: ChilkatLog:
        //   ExtractText:
        //     ...
        //       The PDF's permissions do not allow copying or extracting text (load it with the owner password to extract).
        //     ...
        // rating: good
        // Visitor Leaflet
        //
        // Welcome to the harbor lighthouse. The tower is open on weekends from July to September.
        //
        // Please keep to the marked paths and do not climb on the breakwater.
        //
        // The lantern room is closed in high winds.
    }
}