iText – HTML to PDF - Image is not displayed in PDF

Deiva picture Deiva · Mar 7, 2013 · Viewed 27.3k times · Source

I have a html page with text, image and I am parsing the HTML content to iText to generate the PDF. In the generated PDF,Included images are not getting displayed and , only the text is getting displayed.

If I pass the absolute path like D:/Deiva/CRs/HTMLPage/article-101-horz.jpg then the image will get printed. But if I try to print the image from the server like

http://localhost:8085/content/dam/article-101-h1.jpg or http://www.google.co.in/intl/en_ALL/images/logos/images_logo_lg.gif

then it is not getting printed in the PDF.

NOTE: I am using itextpdf-5.2.1.jar to generate the PDF.

My HTML Code (Article.html):

<html>
   <head>
   </head>
   <body>   
     <p>Generate PDF with image using iText.</p>
     <img src="http://localhost:8085/content/dam/article-10-h1.jpg"></img>
     <img src="http://www.google.co.in/intl/en_ALL/images/logos/imgs_logo_lg.gif"></img>
     <img class="right horz" src="D:/Deiva/CRs/HTMLPage/article-101-horz.jpg"></img>
   </body>
</html>

I am using the below java code for generating the PDF:

private void createPDF (){

  String path = "D:/Deiva/Test.pdf";
  PdfWriter pdfWriter = null;

  //create a new document
  Document document = new Document();

  try {

   //get Instance of the PDFWriter
   pdfWriter = PdfWriter.getInstance(document, new FileOutputStream(path));

   //document header attributes
   document.addAuthor("betterThanZero");
   document.addCreationDate();
   document.addProducer();
   document.addCreator("MySampleCode.com");
   document.addTitle("Demo for iText XMLWorker");
   document.setPageSize(PageSize.LETTER);

   //open document
   document.open();
   InputStream is = new             FileInputStream("D:/Deiva/CRs/Oncology/Phase5/CR1/HTMLPage/Article.html");

   // create new input stream reader
   InputStreamReader isr = new InputStreamReader(is);

   //get the XMLWorkerHelper Instance
   XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
   //convert to PDF
   worker.parseXHtml(pdfWriter, document, isr);

   //close the document
   document.close();
   //close the writer
   pdfWriter.close();

  } catch (Exception e) {
      e.printStackTrace();
  }

 }

Please suggest a solution to display the image in PDF.

Thanks in advance.

Deiva

Answer

Sanjaya Liyanage picture Sanjaya Liyanage · Jul 15, 2013

I think you can do it easily using a Servlet for viewing the image. How to write a servlet for this is here

Here a sample dispatcher for you. Just edit the required places as needed

@Controller
public class ImageController extends DispatcherServlet {



    private static final int DEFAULT_BUFFER_SIZE = 10240; // 10KB.

    // Properties ---------------------------------------------------------------------------------

    private String imagePath;

   @RequestMapping(value="images/{imageId:.+}", method = RequestMethod.GET)
   public @ResponseBody void getImage(@PathVariable String imageId,HttpServletRequest request, HttpServletResponse response){
        String requestedImage = request.getPathInfo();
         this.imagePath ="image path in server here";

         if (requestedImage == null) {
             // Do your thing if the image is not supplied to the request URI.
             // Throw an exception, or send 404, or show default/warning image, or just ignore it.
             try {
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
             }catch(IOException ioException){
                logger.error("error image path incorrect:{}", ioException);

            } // 404.
             return;
         }

         File image=null;
        try {
            image = new File(imagePath, URLDecoder.decode(imageId, "UTF-8"));
        } catch (UnsupportedEncodingException unsupportedEncodingException) {
            logger.error("error image can not decode:{}", unsupportedEncodingException);

        }

         // Check if file actually exists in filesystem.
         if (!image.exists()) {
             // Do your thing if the file appears to be non-existing.
             // Throw an exception, or send 404, or show default/warning image, or just ignore it.
             try {
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
             }catch(IOException ioException){
                logger.error("error image does not exists:{}", ioException);

            } // 404.
             return;
         }

         // Get content type by filename.
         String contentType = "jpeg";
         contentType="image/"+contentType;

         // Init servlet response.
         response.reset();
         response.setBufferSize(DEFAULT_BUFFER_SIZE);
         response.setContentType(contentType);
         response.setHeader("Content-Length", String.valueOf(image.length()));
         response.setHeader("Content-Disposition", "inline; filename=\"" + image.getName() + "\"");

         // Prepare streams.
         BufferedInputStream input = null;
         BufferedOutputStream output = null;

         try {
             // Open streams.
             try {
                input = new BufferedInputStream(new FileInputStream(image), DEFAULT_BUFFER_SIZE);
            } catch (FileNotFoundException e) {

                logger.error("error creating file input stream to the image file :{}", e);


            }
             try {

                 output = new BufferedOutputStream(response.getOutputStream(), DEFAULT_BUFFER_SIZE);

            } catch (IOException e) {


                logger.error("error creating output stream to the http response :{}", e);

            }

             // Write file contents to response.
             byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
             int length;
             try {
                while ((length = input.read(buffer)) > 0) {
                     output.write(buffer, 0, length);
                 }
            } catch (IOException e) {

                logger.error("error writing the image file to outputstream :{}", e);

            }
         } finally {
             // Gently close streams.
             close(output);
             close(input);
         }
     }

     // Helpers (can be refactored to public utility class) ----------------------------------------




private  void close(Closeable resource) {
    if (resource != null) {
        try {
            resource.close();
        } catch (IOException e) {
            // Do your thing with the exception. Print it, log it or mail it.
            logger.error("error closing resources:{}", e);
        }
    }
}




}