Embedded files

31st May 2016
iText

These examples were written in answer to the question How to delete attachments in PDF using iText?

AddEmbeddedFile.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * This example was written by Bruno Lowagie in answer to the following question:
 * http://stackoverflow.com/questions/26648462/how-to-delete-attachment-of-pdf-using-itext
 * This is part one, there's also a part two named RemoveEmbeddedFile (or RemoveEmbeddedFiles)
 */
package com.itextpdf.samples.sandbox.annotations;
 
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.filespec.PdfFileSpec;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
 
import org.junit.experimental.categories.Category;
 
@Category(SampleTest.class)
public class AddEmbeddedFile extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/annotations/add_embedded_file.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new AddEmbeddedFile().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        PdfFileSpec spec = PdfFileSpec.createEmbeddedFileSpec(pdfDoc, "Some test".getBytes(), null, "test.txt", null, null, null);
        pdfDoc.addFileAttachment("some_test", spec);
        pdfDoc.close();
    }
}
AddEmbeddedFiles.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * This example was written by Bruno Lowagie in answer to the following question:
 * http://stackoverflow.com/questions/27823189/add-multiple-attachments-in-a-pdf-using-itext-pdf-stamper
 */
package com.itextpdf.samples.sandbox.annotations;
 
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.filespec.PdfFileSpec;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
 
import org.junit.experimental.categories.Category;
 
@Category(SampleTest.class)
public class AddEmbeddedFiles extends GenericTest {
    public static final String[] ATTACHMENTS = {
            "hello", "world", "what", "is", "up"
    };
    public static final String DEST = "./target/test/resources/sandbox/annotations/add_embedded_files.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new AddEmbeddedFiles().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        for (String s : ATTACHMENTS) {
            PdfFileSpec spec = PdfFileSpec.createEmbeddedFileSpec(pdfDoc,
                    String.format("Some test: %s", s).getBytes(), null, String.format("%s.txt", s), null, null, null);
            pdfDoc.addFileAttachment(String.format("Some test: %s", s), spec);
        }
        pdfDoc.close();
    }
}
RemoveEmbeddedFile.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * This example was written by Bruno Lowagie in answer to the following question:
 * http://stackoverflow.com/questions/26648462/how-to-delete-attachment-of-pdf-using-itext
 * (This is part two, there's also a part one named AddEmbeddedFile)
 */
package com.itextpdf.samples.sandbox.annotations;
 
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import org.junit.experimental.categories.Category;
 
import java.io.File;
 
@Category(SampleTest.class)
public class RemoveEmbeddedFile extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/annotations/remove_embedded_file.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello_with_attachment.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new RemoveEmbeddedFile().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        PdfDictionary root = pdfDoc.getCatalog().getPdfObject();
        PdfDictionary names = root.getAsDictionary(PdfName.Names);
        PdfDictionary embeddedFiles = names.getAsDictionary(PdfName.EmbeddedFiles);
        PdfArray namesArray = embeddedFiles.getAsArray(PdfName.Names);
        namesArray.remove(0);
        namesArray.remove(0);
        pdfDoc.close();
    }
}
RemoveEmbeddedFiles.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * This example was written by Bruno Lowagie in answer to the following question:
 * http://stackoverflow.com/questions/26648462/how-to-delete-attachment-of-pdf-using-itext
 * (This is part two, there's also a part one named AddEmbeddedFile)
 */
package com.itextpdf.samples.sandbox.annotations;
 
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import org.junit.experimental.categories.Category;
 
import java.io.File;
 
@Category(SampleTest.class)
public class RemoveEmbeddedFiles extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/annotations/remove_embedded_files.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello_with_attachment.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new RemoveEmbeddedFiles().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        PdfDictionary root = pdfDoc.getCatalog().getPdfObject();
        PdfDictionary names = root.getAsDictionary(PdfName.Names);
        names.remove(PdfName.EmbeddedFiles);
        pdfDoc.close();
    }
}

Click the following link to see the legacy example for iText 5. Except for security fixes, iText 5 is no longer being developed.



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