Code for printing an html file.

I have the following code for printing an html file from within a program.

I pass a String with the html code in textString.

I get this error message:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: services must be non-null and non-empty
at javax.print.ServiceUI.printDialog(Unknown Source)
at PrintHtml.printHtml(PrintHtml.java:24)

Please help as I don't understand what is incorrect.

Thanks,
RON C

Code:

---

import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.ServiceUI;
import javax.print.SimpleDoc;
import javax.print.attribute.DocAttributeSet;
import javax.print.attribute.HashDocAttributeSet;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;

class PrintHtml
{
public void printHtml(String textString)
{
DocFlavor flavor = DocFlavor.STRING.TEXT_HTML;
PrintService[] services = PrintServiceLookup.lookupPrintServices(
flavor, null);
PrintService defaultService = PrintServiceLookup
.lookupDefaultPrintService();
PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
PrintService service = ServiceUI.printDialog(null, 50, 50, services,
defaultService, flavor, pras);
if (service != null)
{
DocPrintJob job = service.createPrintJob();
DocAttributeSet das = new HashDocAttributeSet();
Doc doc = new SimpleDoc(textString, flavor, das);
try
{
job.print(doc, pras);
}
catch (PrintException pe)
{
}
}
}
}

---

It looks to me like:

Code:

---

PrintServiceLookup.lookupPrintServices(flavor, null);

---

is returning null, and that is being assigned into services. So I would test whether services is or is not null before attempting to use it.

You're correct.

I found a tool DocumentRenderer that works if you use HTMLDocument methodology.

Thanks,
RON C

Hi , i am trying the same code.

DocFlavor psInFormat = DocFlavor.STRING.TEXT_HTML;
Doc doc = new SimpleDoc(data, psInFormat, null);
// data is a html formated string
PrintService psZebra = null;
PrintService[] services = PrintServiceLookup.lookupPrintServices(null, null);
if (services.length >= 0) {
psZebra = services[1];
} else {
return;
}
DocPrintJob job = psZebra.createPrintJob();
job.print(doc, null);

// i am getting invalid flavour exception.

can you plz. help me out