Java小程序可以使用打印机？ [英] Can a Java Applet use the printer?

问题描述

可以在Java小程序能够轻松地打印出的文本/ HTML标准的打印机驱动程序（S）（与所有常见平台赢/苹果/ Linux）的？

Can a Java Applet able to print out text/html easily to standard printer driver(s) (with all common platforms Win/Mac/Linux)?

是否需要签名？

推荐答案

要打印你要么需要使用的或如果未签名的Applet尝试打印，用户将被提示HTML>签名的小程序询问是否允许的权限。

To print you will either need to use Signed Applets or if an unsigned applet tries to print, the user will be prompted to ask whether to allow permission.

下面是一些示例code打印使用的JEditorPane HTML：

Here is some sample code for printing HTML using JEditorPane:

public class HTMLPrinter implements Printable{
    private final JEditorPane printPane;

    public HTMLPrinter(JEditorPane editorPane){
    	printPane = editorPane;
    }

    public int print(Graphics graphics, PageFormat pageFormat, int pageIndex){
    	if (pageIndex >= 1) return Printable.NO_SUCH_PAGE;

    	Graphics2D g2d = (Graphics2D)graphics;
    	g2d.setClip(0, 0, (int)pageFormat.getImageableWidth(), (int)pageFormat.getImageableHeight());
    	g2d.translate((int)pageFormat.getImageableX(), (int)pageFormat.getImageableY());

    	RepaintManager rm = RepaintManager.currentManager(printPane);
    	boolean doubleBuffer = rm.isDoubleBufferingEnabled();
    	rm.setDoubleBufferingEnabled(false);

    	printPane.setSize((int)pageFormat.getImageableWidth(), 1);
    	printPane.print(g2d);

    	rm.setDoubleBufferingEnabled(doubleBuffer);

    	return Printable.PAGE_EXISTS;
    }
}

然后将其发送到打印机：

Then to send it to printer:

HTMLPrinter target = new HTMLPrinter(editorPane);
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(target);
try{
    printJob.printDialog();
    printJob.print();
}catch(Exception e){
    e.printStackTrace();
}

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