使用的PrinterJob打印图像（的Graphics2D）(Using PrinterJob to

有没有一种方法，我可以钻机在Java中的PrinterJob到不实际打印到打印机，这样我可以让显卡的每一页对象？我试过的PrintService设置为空，但Java也不会允许的。

这是这样，我可以检索，而不从本质上在不同的上下文中的地面行动重建PrinterJobs功能对文档的准确打印预览。

下面是我在程序的打印功能的代码：

public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException {

    deepCopyString = string;

    FontMetrics metrics = graphics.getFontMetrics(font);
    int lineHeight = metrics.getHeight();

    arrangePage(graphics, pageFormat, metrics);

    if (page > pageBreaks.length){
        return NO_SUCH_PAGE;
    }

    Graphics2D g = (Graphics2D) graphics;

    g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
    g.setFont(font);

    int begin = (page == 0) ? 0 : pageBreaks[page-1];
    int end = (page == pageBreaks.length) ? lines.length : pageBreaks[page];

    int y = 0;
    int x = 0;

    for (int line = begin; line < end; line++){
        x = 0;
        y += lineHeight;

        checkSyntax(line);

        String l = lines[line];

        for (int c = 0; c < l.length(); c++){
            applySyntax(c, line);

            metrics = graphics.getFontMetrics(font);
            String ch = Character.toString(l.charAt(c));

            g.setFont(font);
            g.drawString(ch, x, y);

            x += metrics.charWidth(l.charAt(c));
            //System.out.println(c + "/"+l.length());
        }

        //g.drawString(lines[line], 0, y);
    }

    reset();

    records.add(g);

    return PAGE_EXISTS;
}

你已经可以看到图形对象被记录，这样我可以在另一个组件画他们，但是它是相当无用看到，因为它会继续前进，把这些给我的打印机就可以完成记录之前。

这可能是一般一个坏主意，我很新的印刷。如果这是一个严重恶劣的路要走这一点，随意指点我是要解释一个更好的办法的来源。

基本上，你要创建自己的Graphics上下文，你可以画画。您还需要构建PageFormat ，可以是过去的print方法。

public class TestPrint implements Printable  {

    private BufferedImage background;
    public static final float DPI = 72;

    public static void main(String[] args) {
        new TestPrint();
    }

    public TestPrint() {

        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (Exception ex) {
                }

                try {
                    background = ImageIO.read(new File("C:/Users/shane/Dropbox/MegaTokyo/MgkGrl_Yuki_by_fredrin.jpg"));
                } catch (IOException ex) {
                    ex.printStackTrace();
                }

                float width = cmToPixel(21f, DPI);
                float height = cmToPixel(29.7f, DPI);

                Paper paper = new Paper();
                float margin = cmToPixel(1, DPI);
                paper.setImageableArea(margin, margin, width - (margin * 2), height - (margin * 2));
                PageFormat pf = new PageFormat();
                pf.setPaper(paper);

                BufferedImage img = new BufferedImage(Math.round(width), Math.round(height), BufferedImage.TYPE_INT_RGB);
                Graphics2D g2d = img.createGraphics();
                g2d.setColor(Color.WHITE);
                g2d.fill(new Rectangle2D.Float(0, 0, width, height));
                try {
                    g2d.setClip(new Rectangle2D.Double(pf.getImageableX(), pf.getImageableY(), pf.getImageableWidth(), pf.getImageableHeight()));
                    print(g2d, pf, 0);
                } catch (PrinterException ex) {
                    ex.printStackTrace();
                }
                g2d.dispose();

                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new JLabel(new ImageIcon(img)));
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);

            }
        });

    }

    public float cmToPixel(float cm, float dpi) {

        return (dpi / 2.54f) * cm;

    }

    public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException {

        if (page > 0) {
            return NO_SUCH_PAGE;
        }

        Graphics2D g = (Graphics2D) graphics;

        g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
        if (background != null) {

            int x = (int)Math.round((pageFormat.getImageableWidth() - background.getWidth()) / 2f);
            int y = (int)Math.round((pageFormat.getImageableHeight() - background.getHeight()) / 2f);

            g.drawImage(background, x, y, null);

        }

        g.setColor(Color.BLACK);
        g.draw(new Rectangle2D.Double(0, 0, pageFormat.getImageableWidth() - 1, pageFormat.getImageableHeight() - 1));

        return PAGE_EXISTS;
    }
}