java - 未找到打印服务错误消息

Question

我开始创建一个简单的 Java 应用程序来使用以下代码打印“Hello World”:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.print.*;

public class HelloWorldPrinter implements Printable, ActionListener { 

public int print(Graphics g, PageFormat pf, int page) throws
                                                    PrinterException {

    if (page > 0) { /* We have only one page, and 'page' is zero-based */
        return NO_SUCH_PAGE;
    }

    /* User (0,0) is typically outside the imageable area, so we must
     * translate by the X and Y values in the PageFormat to avoid clipping
     */
    Graphics2D g2d = (Graphics2D)g;
    g2d.translate(pf.getImageableX(), pf.getImageableY());

    /* Now we perform our rendering */
    g.drawString("Hello world!", 100, 100);

    /* tell the caller that this page is part of the printed document */
    return PAGE_EXISTS;
}

public void actionPerformed(ActionEvent e) {
     PrinterJob job = PrinterJob.getPrinterJob();
     job.setPrintable(this);
     boolean ok = job.printDialog();
     if (ok) {
         try {
              job.print();
         } catch (PrinterException ex) {
          /* The job did not successfully complete */
         }
     }
}

public static void main(String args[]) {

    UIManager.put("swing.boldMetal", Boolean.FALSE);
    JFrame f = new JFrame("Hello World Printer");
    f.addWindowListener(new WindowAdapter() {
       public void windowClosing(WindowEvent e) {System.exit(0);}
    });
    JButton printButton = new JButton("Print Hello World");
    printButton.addActionListener(new HelloWorldPrinter());
    f.add("Center", printButton);
    f.pack();
    f.setVisible(true);
}
} 

这不起作用，我收到“未找到打印服务”警告消息。

我使用的是 Ubuntu 12.04，Java 版本是 1.7.0_25。

我怎样才能摆脱这个警报？

Answer 1

安装 cups-pdf，它将安装一个创建 PDF 文件的虚拟打印机:

sudo apt-get install cups-pdf