打印bufferedimage到打印机

我有一个应用程序，我想从中打印图像。该图像作为BufferedImage对象加载。问题是，当我打印图像（后附或pdf文件）时，质量非常差。
当我使用其他工具（基本上可以打印图像的任何图片查看器应用程序）时，结果显着更好。
我知道DPI vs分辨率可能存在一些问题，但我不确定如何计算正确的打印值。
我试图谷歌和尝试一些方法，但似乎没有工作，因为我的预期。基本上，我只想打印一张图像（分辨率为3000x2000）到打印机（DPI为600x600）。打印bufferedimage到打印机

这是我如何创建打印作业：

PrintRequestAttributeSet printAttributes = new HashPrintRequestAttributeSet(); 
printAttributes.add(PrintQuality.HIGH); 
printAttributes.add(new PrinterResolution(600, 600 PrinterResolution.DPI)); 
printAttributes.add(new Destination(URI.create("file:/tmp/test.ps"))); 
PageFormat pf = printerJob.defaultPage(); 
Paper paper = pf.getPaper(); 
double xMargin = 0.0; 
double yMargin = 0.0; 
paper.setImageableArea(xMargin, yMargin, paper.getWidth() - 2 * xMargin, paper.getHeight() - 2 * yMargin); 
pf.setPaper(paper); 

// create new Printable for the specified image 
printerJob.setPrintable(PrintableImage.get(image), pf) 

if (printerJob.printDialog(printAttributes)) { 
    printerJob.print(printAttributes); 
}

凡图像0是 BufferedImage的和 PrintableImage.get回报新实例，实现打印那么实际打印是这样做的方式（我让评论的代码，我试过但没有为我工作）

@Override public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException { if (image == null) throw new PrinterException("no image specified to be printed"); // We have only one page, and 'page' is zero-based if (pageIndex > 0) { return NO_SUCH_PAGE; } // tranlate the coordinates (according to the orientations, margins, etc) Graphics2D printerGraphics = (Graphics2D) graphics; //g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC); //g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); //g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); printerGraphics.translate(pageFormat.getImageableX(), pageFormat.getImageableY()); // THIS IS A TEST - javax.printing api uses 72 DPI, but we have 600DPI set for the printer //AffineTransform at = printerGraphics.getTransform(); //printerGraphics.scale((double)72/(double)600, (double)72/(double)600); //printerGraphics.drawRenderedImage(image, null); //printerGraphics.setTransform(at); //if(printerGraphics != null) //return PAGE_EXISTS; double scale = 72.0/600.0; Dimension pictureSize = new Dimension((int)Math.round(image.getWidth()/scale), (int) Math.round(image.getHeight()/scale)); // center the image horizontaly and verticaly on the page int xMargin = (int) ((pageFormat.getImageableWidth() - image.getWidth())/2); int yMargin = (int) ((pageFormat.getImageableHeight() - image.getHeight())/2); xMargin = yMargin = 0; System.out.println(String.format("page size [%.2f x %.2f], picture size [%.2f x %.2f], margins [%d x %d]", pageFormat.getImageableWidth(), pageFormat.getImageableHeight(), pictureSize.getWidth(), pictureSize.getHeight(), xMargin, yMargin)); printerGraphics.drawImage(image, xMargin, yMargin, (int)pageFormat.getWidth(), (int)pageFormat.getHeight(), null); //printerGraphics.drawImage(image, 0, 0, null); //printerGraphics.drawImage(image, xMargin, yMargin, pictureSize.width, pictureSize.height, null); //printerGraphics.drawImage(image, xMargin, yMargin, (int) pageFormat.getImageableWidth(), (int) pageFormat.getImageableHeight(), 0, 0, pictureSize.width, pictureSize.height, null); //printerGraphics.drawImage(image, 0, 0, (int) pageFormat.getWidth() - xMargin, (int) pageFormat.getHeight() - yMargin, 0, 0, pictureSize.width, pictureSize.height, null); return PAGE_EXISTS; }

有人解决同样的问题吗？
任何帮助，将不胜感激。
感谢
马捷

来源

2012-02-27 Matej N

这是我做到了。它工作顺利。请注意，此代码片段不会使图片居中。

public int print(Graphics g, PageFormat pageFormat, int pageIndex) throws PrinterException { 
       if (pageIndex > 0) { 
        return (NO_SUCH_PAGE); 
       } else { 
        double pageHeight = pageFormat.getImageableHeight(), pageWidth = pageFormat.getImageableWidth(); 

        Graphics2D g2d = (Graphics2D) g; 
        g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY()); 
        if (pageHeight < image.getHeight() || pageWidth < image.getWidth()) { 
         g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
           RenderingHints.VALUE_INTERPOLATION_BILINEAR); 
         g2d.drawImage(image, 0, 0, (int) pageWidth, (int) pageHeight - textSize, null); 
        } else { 
         g2d.drawImage(image, 0, 0, null); 
        } 
        g2d.dispose(); 
        return (PAGE_EXISTS); 
       } 
      }

来源

2013-03-01 18:48:25

@Viktor Fonic 感谢你为这个，我正在寻找很多事情要做这个！你的解决方案完美地工作，但有一个小错误， TEXTSIZE未声明的，因此：

int textSize = (int) (pageHeight - image.getHeight()*pageWidth/image.getWidth());

来源

2014-10-15 09:58:53 sboda

打印bufferedimage到打印机

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