Hi,
Recently we developed a application to generate barcode labels using
itext. However when we performed stress test for 3 users generating 2000
labels each. Server is crashing and it seems native memory seems to be the
issue. This machine has 4GB RAM and java heap set to max of 1.5 GB. I'm
using latest version of itext and java 1.4.2. Here is my code.
ByteArrayOutputSteam baos=new
ByteArrayOutputSteam();
Document doc=new Document(new
Rectangle(500,300),0,0,0,0);
PdfWriter writer = PdfWriter.getInstance(doc,
baos);
writer.setStrictImageSequence(true);
doc.open();
for(int i=0; i<list.size(); i++){
MyObject label=(MyObject)list.get(i);
Barcode39 code=new Barcode39();
code.setCode(label.getCode());
code.setAltText(label.getAlternateText());
code.setBaseline(-6);
code.setBarHeight(code.getBarHeight()*2);
BaseFont
font=BaseFont.createFont("Helvetica", "winansi", false);
code.setFont(font);
code.setSize(15);
code.setTextAlignment(Element.ALIGN_CENTER);
PdfContentByte cb =
writer.getDirectContent();
PdfTemplate image39 =
code.createTemplateWithBarcode(cb, null, null);
cb.addTemplate(image39, 50, 57);
writer.releaseTemplate(image39);
cb.beginText();
cb.setFontAndSize(BaseFont.createFont("Helvetica", "winansi", false), 17);
cb.showTextAligned(PdfContentByte.ALIGN_CENTER, label.getDescription(), 150,
37, 0);
cb.endText();
doc.newPage();
}
doc.close();
writer.close();
return baos.toByteArray();
Is there anything that I can do to optimize above code. I tried to generate
labels in small chucks and write it file and later merge the files to
display results. Still got same error.
Thank you and appreciate any help.
Jaggu
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