java 调用打印机 打印服务

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
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;

public class PrintDemo2 {

public static void main(String[] args) {
DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
PrintService[] pservices = PrintServiceLookup.lookupPrintServices(
flavor, aset);
PrintService defaultService = PrintServiceLookup
.lookupDefaultPrintService();
PrintService service = ServiceUI.printDialog(null, 200, 200, pservices,
defaultService, flavor, aset);
if (service != null) {
try {
DocPrintJob pj = service.createPrintJob();
FileInputStream fis = new FileInputStream("D:" + File.separator
+ "HELLO.txt");// 打印D盘HELLO.txt文档。
DocAttributeSet das = new HashDocAttributeSet();
Doc doc = new SimpleDoc(fis, flavor, das);
pj.print(doc, aset);
} catch (FileNotFoundException fe) {
fe.printStackTrace();
} catch (PrintException e) {
e.printStackTrace();
}
} else {
System.out.println("打印失败");
}
}

}