Je dois imprimer un fichier (texte brut) en utilisant les API javax.print. Je suis capable de rechercher l'imprimante et de soumettre un travail d'impression. Mais je suis capable d'imprimer seulement une copie du fichier. Voici le code que j'ai utilisé.Options javax.print.attribute.PrintRequestAttributeSet ignorées par l'imprimante
Aucune des options/attributs que j'ai spécifiés à l'aide du PrintRequestAttributeSet n'est reconnu par l'imprimante. Bien que je spécifie 2 copies à imprimer, l'imprimante imprime seulement une copie. Est-ce que je fais quelque chose de mal ici?
imprimante utilisé: Canon iR5050 PCL6
package
com.print;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
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.SimpleDoc;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.Finishings;
import javax.print.attribute.standard.MediaSizeName;
import javax.print.attribute.standard.NumberUp;
import javax.print.attribute.standard.OrientationRequested;
import javax.print.attribute.standard.Sides;
import javax.print.event.PrintJobAdapter;
import javax.print.event.PrintJobEvent;
public class TestPrint {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String fileName = "D:/test.log";
// Open the file
InputStream in = null;
try {
in = new FileInputStream(fileName);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// Figure out what type of file we're printing
DocFlavor myFormat = getFlavorFromFilename(fileName);
// Create a Doc
Doc myDoc = new SimpleDoc(in, myFormat, null);
// Build a set of attributes
PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
aset.add(OrientationRequested.LANDSCAPE);
aset.add(new Copies(2));
aset.add(Sides.DUPLEX);
aset.add(MediaSizeName.NA_LETTER);
aset.add(new NumberUp(2));
aset.add(Finishings.STAPLE);
// discover the printers that can print the format according to the
// instructions in the attribute set
PrintService[] services = PrintServiceLookup.lookupPrintServices(
myFormat, aset);
// Create a print job from one of the print services
if (services.length > 0) {
System.out.println("The print sent to>>>" + services[0].getName());
DocPrintJob job = services[0].createPrintJob();
// Monitor the print job with a listener
job.addPrintJobListener(new PrintJobAdapter() {
public void printDataTransferCompleted(PrintJobEvent e) {
System.out.println("Data transfer completed!");
}
public void printJobNoMoreEvents(PrintJobEvent e) {
System.out.println("No more events!");
}
public void printJobRequiresAttention(PrintJobEvent e) {
System.out.println("Requires Attention!");
}
public void printJobFailed(PrintJobEvent e) {
System.out.println("Print Job Failed!");
}
public void printJobCompleted(PrintJobEvent e) {
System.out.println("Print Job Completed!");
}
public void printJobCanceled(PrintJobEvent e) {
System.out.println("Print Job Cancelled!");
}
});
try {
job.print(myDoc, aset);
} catch (PrintException pe) {
pe.printStackTrace();
}
System.out.println("The print job ........");
}
}
// A utility method to return a DocFlavor object matching the
// extension of the filename.
public static DocFlavor getFlavorFromFilename(String filename) {
String extension = filename.substring(filename.lastIndexOf('.') + 1);
extension = extension.toLowerCase();
if (extension.equals("gif"))
return DocFlavor.INPUT_STREAM.GIF;
else if (extension.equals("jpeg"))
return DocFlavor.INPUT_STREAM.JPEG;
else if (extension.equals("jpg"))
return DocFlavor.INPUT_STREAM.JPEG;
else if (extension.equals("png"))
return DocFlavor.INPUT_STREAM.PNG;
else if (extension.equals("ps"))
return DocFlavor.INPUT_STREAM.POSTSCRIPT;
else if (extension.equals("txt"))
return DocFlavor.INPUT_STREAM.TEXT_PLAIN_HOST;
// Fallback: try to determine flavor from file content
else
return DocFlavor.INPUT_STREAM.AUTOSENSE;
}
}