小编use*_*599的帖子

请帮助尝试使用此代码在热敏打印机中打印,我在系统托盘中打印了一份打印作业,但我的热敏打印机没有打印.PrintReceiptUtil类:

import java.awt.JobAttributes;
import java.io.ByteArrayInputStream;
import java.io.IOException;
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.event.PrintJobAdapter;
import javax.print.event.PrintJobEvent;


public static void doPrintReceipt() throws IOException, PrintException{

    String defaultPrinter = PrintServiceLookup.lookupDefaultPrintService().getName();
    System.out.println("Default printer: " + defaultPrinter);
    PrintService service = PrintServiceLookup.lookupDefaultPrintService();
    // prints the famous hello world! plus a form feed
    InputStream is = new ByteArrayInputStream("hello world!\f".getBytes("UTF8"));

    PrintRequestAttributeSet  pras = new HashPrintRequestAttributeSet();

    pras.add(new Copies(1));

    DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE; …