thibault.faure
46 lines
2.0 KiB
Java
46 lines
2.0 KiB
Java
package com.baeldung.pdfedition;
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import java.io.IOException;
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import com.itextpdf.kernel.colors.ColorConstants;
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import com.itextpdf.kernel.pdf.PdfDocument;
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import com.itextpdf.kernel.pdf.PdfPage;
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import com.itextpdf.kernel.pdf.PdfReader;
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import com.itextpdf.kernel.pdf.PdfWriter;
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import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
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import com.itextpdf.kernel.pdf.canvas.parser.listener.IPdfTextLocation;
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import com.itextpdf.layout.Canvas;
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import com.itextpdf.layout.element.Paragraph;
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import com.itextpdf.pdfcleanup.PdfCleaner;
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import com.itextpdf.pdfcleanup.autosweep.CompositeCleanupStrategy;
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import com.itextpdf.pdfcleanup.autosweep.RegexBasedCleanupStrategy;
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public class PdfTextReplacement {
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private static final String SOURCE = "src/main/resources/baeldung-modified.pdf";
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private static final String DESTINATION = "src/main/resources/baeldung-fixed.pdf";
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public static void main(String[] args) throws IOException {
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PdfReader reader = new PdfReader(SOURCE);
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PdfWriter writer = new PdfWriter(DESTINATION);
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PdfDocument pdfDocument = new PdfDocument(reader, writer);
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replaceTextContentFromDocument(pdfDocument);
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pdfDocument.close();
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}
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private static void replaceTextContentFromDocument(PdfDocument pdfDocument) throws IOException {
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CompositeCleanupStrategy strategy = new CompositeCleanupStrategy();
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strategy.add(new RegexBasedCleanupStrategy("Baeldung tutorials").setRedactionColor(ColorConstants.WHITE));
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PdfCleaner.autoSweepCleanUp(pdfDocument, strategy);
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for (IPdfTextLocation location : strategy.getResultantLocations()) {
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PdfPage page = pdfDocument.getPage(location.getPageNumber() + 1);
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PdfCanvas pdfCanvas = new PdfCanvas(page.newContentStreamAfter(), page.getResources(), page.getDocument());
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Canvas canvas = new Canvas(pdfCanvas, location.getRectangle());
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canvas.add(new Paragraph("HIDDEN").setFontSize(8)
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.setMarginTop(0f));
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}
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}
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}
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