Exception while writing header/footer to the aspose generated pdf file

kalpesh.adhatrao · June 29, 2014, 1:52am

Hi ,

I am getting the below stack trace when I am trying to write a header/foot the to the pdf document.

06:18:53,009 ERROR [stderr] (http–0.0.0.0-8080-4) java.lang.NullPointerException

06:18:53,015 ERROR [stderr] (http–0.0.0.0-8080-4) at com.aspose.pdf.Font.(Unknown Source)

06:18:53,021 ERROR [stderr] (http–0.0.0.0-8080-4) at com.aspose.pdf.internal.od.a.a(Unknown Source)

06:18:53,028 ERROR [stderr] (http–0.0.0.0-8080-4) at com.aspose.pdf.TextSegment.setText(Unknown Source)

06:18:53,035 ERROR [stderr] (http–0.0.0.0-8080-4) at com.aspose.pdf.TextFragment.setText(Unknown Source)

06:18:53,040 ERROR [stderr] (http–0.0.0.0-8080-4) at com.aspose.pdf.TextStamp.put(Unknown Source)

06:18:53,044 ERROR [stderr] (http–0.0.0.0-8080-4) at com.aspose.pdf.Page.addStamp(Unknown Source)

06:18:53,049 ERROR [stderr] (http–0.0.0.0-8080-4) at

I am attaching the sample file input text file (original8_tika_14_incompatible.rtf)

Note: This behaviour is true for all the input formats .rtf, .txt or .tiff.

1. I am converting the document to pdf document stream.

public ByteArrayInputStream convertToPdf(InputStream docInputStream) throws PDFConversionException {

// Save the document in PDF format.

ByteArrayOutputStream dstStream = null;

try {

final Document doc = new Document(docInputStream);

dstStream = new ByteArrayOutputStream();

doc.save(dstStream, SaveFormat.PDF);

}

catch (Exception e) {

s_Logger.error(" Error : "+e.getMessage()+" occured while processing file for pdf conversion");

throw new PDFConversionException("Invalid document model for processing");

}

final ByteArrayInputStream srcStream = new ByteArrayInputStream(dstStream.toByteArray());

return srcStream;

}

2. Then I am adding header and footer to the generated input stream.

private InputStream addHeaderFooter(final ByteArrayInputStream docInputStream, final DocumentModel pdfDocInfo) {

// open document

final com.aspose.pdf.Document pdfDocument = new com.aspose.pdf.Document(docInputStream);

// create formatted text stamp

final FormattedText headerText = new FormattedText(getPageHeader(pdfDocInfo));

final TextStamp headerStamp = getHeaderStyle(headerText);

final FormattedText footerText = new FormattedText(getPageFooter(pdfDocInfo));

final TextStamp footerStamp = getFooterStyle(footerText);

// iterate through all pages of PDF file

for (int Page_counter =1; Page_counter<=pdfDocument.getPages().size(); Page_counter++) {

//add stamp to all pages of PDF file

pdfDocument.getPages().get_Item(Page_counter).addStamp(headerStamp); This is the line throwing an Exception.

pdfDocument.getPages().get_Item(Page_counter).addStamp(footerStamp);

pdfDocument.getPages().get_Item(Page_counter).addStamp(

getPageNo(Page_counter, pdfDocument.getPages().size()));

}

// Getting the input stream of modified PDF document

final ByteArrayOutputStream dstStream = new ByteArrayOutputStream();

pdfDocument.save(dstStream, com.aspose.pdf.SaveFormat.Pdf);

final ByteArrayInputStream srcStream = new ByteArrayInputStream(dstStream.toByteArray());

return srcStream;

}

Where the helper function is to generate header/footer text is below.

private String getPageHeader(final DocumentModel pdfDocInfo) {

final String sPatientFristName = pdfDocInfo.getPatientFirstName();

final String sPatientLastName = pdfDocInfo.getPatientLastName();

final String sPatientMiddleName = pdfDocInfo.getPatientMiddleName();

final StringBuilder sb = new StringBuilder();

sb.append(sPatientLastName +", "+ sPatientFristName +" " +sPatientMiddleName.substring(0, 1).toUpperCase());

sb.append(" DOB:" +pdfDocInfo.getDateOfBirth());

sb.append(" GENDER: "+pdfDocInfo.getGender());

sb.append(" EMPI: "+pdfDocInfo.getEMPI());

return sb.toString();

}

And

private TextStamp getHeaderStyle(final FormattedText headerText) {

final TextStamp headerStamp = new TextStamp(headerText);

//set properties of the stamp

headerStamp.setTopMargin(10);

headerStamp.setLeftMargin(10.0);

headerStamp.setHorizontalAlignment(com.aspose.pdf.HorizontalAlignment.Left);

headerStamp.setVerticalAlignment(com.aspose.pdf.VerticalAlignment.Top);

//set text properties

headerStamp.getTextState().setFontSize(11.0F);

headerStamp.getTextState().setFontStyle(com.aspose.pdf.FontStyles.Bold);

return headerStamp;

}

Environment is Jboss/Java 1.6

I am making the request through apache http client lib. below is the sample code.

FileBody fileBody = new FileBody(request.getDocument(), mimeType) ;

multipartEntity.addPart("document", fileBody);

multipartEntity.addPart("DateOfBirth", new StringBody(request.getDateOfBirth(), charSet));

multipartEntity.addPart("Gender", new StringBody(request.getDateOfBirth(), charSet));

multipartEntity.addPart("empi", new StringBody(request.getEMPI(), charSet));

String ua = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36";

httpPost.setHeader("User-Agent", ua);

httpPost.setHeader("Accept", "application/json");

httpPost.setHeader("Accept-Encoding", "gzip,deflate,sdch");

httpPost.setHeader("Accept-Language", "en-US,en;q=0.8");

httpPost.setHeader("Cache-Control", "no-cache");

httpPost.setHeader("Connection", "keep-alive");

multipartEntity.addPart("DateOfBirth", new StringBody(request.getDateOfBirth(), charSet));

multipartEntity.addPart("Gender", new StringBody(request.getGender(), charSet));

multipartEntity.addPart("empi", new StringBody(request.getEMPI(), charSet));

Please let me know.

codewarior · June 30, 2014, 2:49pm

Hi Kalpesh,

Thanks for contacting support.

We are working over this scenario and will get back to you soon. We are sorry for your inconvenience.

kalpesh.adhatrao · July 1, 2014, 2:03am

Hi We find out the root cause of the issue,

Can you please let us know what all char set aspose supports?

codewarior · July 2, 2014, 7:12am

Hi Kalpesh,

Thanks for sharing the details.

I have tried replicating the issue using Aspose.Pdf for Java 9.1.0 where I have used the following code snippet (based on original code which you have shared) and I am unable to notice any exception. For your reference, I have also attached the resultant PDF generated over my end.

[Java]

com.aspose.pdf.Document
pdfDocument = new com.aspose.pdf.Document(“c:/pdftest/original8_tika_14_incompatible.pdf”);<o:p></o:p>

//create formatted text stamp

com.aspose.pdf.facades.FormattedText headerText = new com.aspose.pdf.facades.FormattedText(getPageHeader(), java.awt.Color.red, "c:/Windows/Fonts/ARIALUNI.TTF", com.aspose.pdf.facades.EncodingType.Winansi, true, 14);

TextStamp headerStamp = getHeaderStyle(headerText);

com.aspose.pdf.facades.FormattedText footerText = new com.aspose.pdf.facades.FormattedText("getPageFooter(pdfDocInfo)");

//TextStamp footerStamp = getFooterStyle(footerText);

//iterate through all pages of PDF file

for (int Page_counter = 1; Page_counter <= pdfDocument.getPages().size(); Page_counter++)

{

//add stamp to all pages of PDF file

pdfDocument.getPages().get_Item(Page_counter).addStamp(headerStamp); //This is the line throwing an Exception.

//pdfDocument.getPages().get_Item(Page_counter).addStamp(footerStamp);

//pdfDocument.getPages().get_Item(Page_counter).addStamp(new com.aspose.pdf.facades.Stamp()) getPageNo(Page_counter, pdfDocument.getPages().size()));

}

pdfDocument.save("c:/pdftest/Stamped_original8_tika_14_incompatible.pdf", com.aspose.pdf.SaveFormat.Pdf);

static String getPageHeader() {

final String sPatientFristName = "First Name";

final String sPatientLastName = "Last Name";

final String sPatientMiddleName = "MiddleName";