How to add blob image to pdf file?

Question

I'm working with png images stored in the database as a blob , and I'm also using PDFBox 2.0.13 to do this task .. I used this

LosslessFactory.createFromImage ( BufferedImage) // null pointer exception raised

I don't know if I should use :

PDImageXObject.createFromFile

as it works for png image type .. is there any way to use it and create file object from blob to use it with PDImageXObject.createFromFile ??

If there any other way that I could add blob png image to pdf file .. that would be a great help .

I'm using this method

public byte[] getArchiveDocument(String id, String index, String type) throws Exception {

    String idx = getIDForDocument(index, id, type);
    System.out.println(idx);
    String s="  ";

    String z="";


    SystemDbManager sx=new SystemDbManager();
    sx.executeStatment(s);

    Blob blob = null;
    ResultSet  rs=null;


    PDDocument document = new PDDocument();

    try {
        rs=sx.getResultSet(z);

        if (rs.next())  {



            blob=rs.getBlob("imageole");    

               InputStream in = blob.getBinaryStream();

               PDPage page = new PDPage();
               document.addPage(page);
               File f = File.createTempFile("stream2file", ".tiff");
               f.deleteOnExit();
                try (FileOutputStream out = new FileOutputStream(f)) {
                    IOUtils.copy(in, out);
                }

               PDImageXObject img = PDImageXObject.createFromFileByContent(f, document);
               PDPageContentStream contentStream = new PDPageContentStream(document, page);
               contentStream.drawImage(img, 0, 0);
               contentStream.close();
               in.close();
        }


    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    finally {
    rs.close();
    sx.close();

    }
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    document.save(byteArrayOutputStream);
    document.close();
    return byteArrayOutputStream.toByteArray();

}

error stack

java.io.IOException: First image in tiff is not a single tile/strip
at org.apache.pdfbox.pdmodel.graphics.image.CCITTFactory.extractFromTiff(CCITTFactory.java:435)
at org.apache.pdfbox.pdmodel.graphics.image.CCITTFactory.createFromRandomAccessImpl(CCITTFactory.java:203)
at org.apache.pdfbox.pdmodel.graphics.image.CCITTFactory.createFromFile(CCITTFactory.java:164)
at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.createFromFileByContent(PDImageXObject.java:257)
at ps.gov.gpc.tools.ArchiveModel.getArchiveDocument(ArchiveModel.java:117)
at ps.gov.gpc.siteService.action.ShowArchiveDocAction.execute(ShowArchiveDocAction.java:48)
at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

thank you .

Answer 1

Have you tried using PDImageXObject.createFromByteArray as mentioned in doc? Code below is working fine for me (JDK 8):

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;

public class PDFBox {
    public static void main(String[] args) {
        String path = "/home/yohanesgultom/Documents/example.pdf";
        PDDocument doc = new PDDocument();
        PDPage page = new PDPage();
        try {
            // convert image to byte array
            // for Blob use java.sql.Blob.getBytes(long pos, int length)
            BufferedImage image = ImageIO.read(new File("/home/yohanesgultom/Pictures/php7.png"));
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            ImageIO.write(image, "png", outputStream);
            byte[] imageByte = outputStream.toByteArray();

            // convert byte array to image object
            PDImageXObject imageObject = PDImageXObject.createFromByteArray(doc, imageByte, null);
            PDPageContentStream contentStream = new PDPageContentStream(doc, page);
            // draw image on top of page
            contentStream.drawImage(imageObject, 25, 600);
            contentStream.close();
            doc.addPage(page);
            doc.save(path);
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

There is a nice example on converting java.sql.Blob to byte[] in here.