[iText-questions] setFontAndSize(...) supposed problem ..

[NICOLAU Raffaele]

Hello iText users,

 

I have some kind of problem concerning a Document, in which I try to add a PdfPTable. The PdfPTable is generated quite normally, but when I do the

document.add(myTable), i have the following stack trace :

 

DocumentException: java.lang.NullPointerException
 at com.lowagie.text.pdf.PdfContentByte.setFontAndSize(Unknown Source)
 at com.lowagie.text.pdf.PdfDocument.writeLineToContent(Unknown Source)
 at com.lowagie.text.pdf.ColumnText.go(Unknown Source)
 at com.lowagie.text.pdf.ColumnText.go(Unknown Source)
 at com.lowagie.text.pdf.PdfPRow.writeCells(Unknown Source)
 at com.lowagie.text.pdf.PdfPTable.writeSelectedRows(Unknown Source)
 at com.lowagie.text.pdf.PdfPTable.writeSelectedRows(Unknown Source)
 at com.lowagie.text.pdf.PdfPRow.writeCells(Unknown Source)
 at com.lowagie.text.pdf.PdfPTable.writeSelectedRows(Unknown Source)
 at com.lowagie.text.pdf.PdfPTable.writeSelectedRows(Unknown Source)
 at com.lowagie.text.pdf.PdfDocument.addPTable(Unknown Source)
 at com.lowagie.text.pdf.PdfDocument.add(Unknown Source)
 at com.lowagie.text.Document.add(Unknown Source)
 at com.influe.asp.render.RenderDocumentPdf.render(RenderDocumentPdf.java:148)
 at com.influe.asp.render.Main.main(Main.java:30)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at com.intellij.rt.execution.application.AppMain.main(Unknown Source)

 

Here is the portion of code involved .... :

 

 public String render(Locale p_locale,
                       String p_fileName) throws Exception
  {
    String _returnValue = null;

 

    // Classe pour la param�tres
    RenderParameters _params = RenderParameters.getInstance();

 

    // Chemin du fichier pdf.
    String _pdfFileName = null;

 

    // 1- Set d'objets Lowagie
    PdfContentByte pcb;
    PdfTemplate pt;
    BaseFont bf = null;

 

    Document document = new Document(PageSize.A4, 20, 20, 20, 20);

 

    // 2- On ouvre le document
    document.open();

 

    try
    {
      // 3- On r�cup�re l'objet ici.
      //    Faire les appels aux proxy pour chaque truc (sais pas trop comment faire encore) => non non non
      // donn�es r�cup�r�es dans l'application utilisant ce module.

 

      if (p_fileName == null)
      {
        throw new RuntimeException("!!");
      }

 

      _pdfFileName = File.createTempFile(p_fileName, ".pdf", new File(_params.getSharedDirectory())).getAbsolutePath();
    }
    catch(Exception _ex)
    {
      throw _ex;
    }

 

    // 4- On set les propri�t� du document
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(_pdfFileName));

 

    try
    {
      // NOUVEAUTE � partir de la version 1.0, on dois ouvrir le writer !!!
      writer.open();
      pcb = writer.getDirectContent();
      pt = pcb.createTemplate(25, 25);

 

      bf = BaseFont.createFont(_params.getArialUnicodeTTF(), BaseFont.IDENTITY_H, BaseFont.EMBEDDED);

 

      // On set la font et la taille
      if (bf == null)
      {
        throw new RuntimeException("BaseFont problem, exiting.");
      }

 

      PdfPTable _space = createSpace(new Font(bf, 9));

 

      // On cr�e la classe avec les evenements ???!!!
  //    RenderPdfEvent _events = new RenderPdfEvent(bf, pcb, pt);
  //    writer.setPageEvent(_events);

 

      // On forme le header ...
      PdfPTable _header = getHeader(header, p_locale);
      if (_header != null)
      {
        document.add(_header);
      }

 

...

}

 

and the getHeader() method ..

 

private PdfPTable getHeader(
          ArrayList p_objHeader,
          Locale p_locale) throws Exception
  {
    // On cr�e un nouveau tableau avec autant de colonnes que d'�l�ments dans la liste des �l�ments de l'entete
    PdfPTable _returnValue = null;

 

    try
    {
      if (p_objHeader.size() > 0)
      {
        _returnValue = new PdfPTable(p_objHeader.size());

 

        // largeur des diff�rentes colonnes ...
        int _largeur = (100 / p_objHeader.size());
        int[] _taille = new int[p_objHeader.size()];

 

        for (int _i = 0; _i < p_objHeader.size(); _i++)
        {
          _taille[_i] = _largeur;
        }

 

        _returnValue.setWidths(_taille);
        _returnValue.setWidthPercentage(100);

 

        for (Iterator _it = p_objHeader.iterator(); _it.hasNext(); )
        {
          RenderObjectI _element = (RenderObjectI)_it.next();
          /* The PdfPTable here seems to be really wlel formed, in debugging i saw that it     contained only one row with the data a specified before, so for me, the PDfPTable is really what I wanted it to be */

          Object _obj = _element.render(RenderDocumentI.RENDER_MODE_PDF, p_locale);

 

          if (_obj instanceof PdfPCell)
          {
            _returnValue.addCell((PdfPCell)_obj);
          }

 

          if (_obj instanceof PdfPTable)
          {
            _returnValue.addCell((PdfPTable)_obj);
          }
        }
      }
    }
    catch (Exception _ex)
    {
      log.error(_ex, _ex);
    }

 

    return _returnValue;
  }

 

Thanks again !

 

Regards,

 

R.Nicolau

www.influe.com