据我所知,这样的条形码无法旋转(iReport没有该属性,Java类中的烧烤条形码也没有).我见过一些例子,但它们不完整,我不明白如何使用它们,例如：

public class BarbecueRenderer extends JRAbstractSvgRenderer
{

private boolean rotate;
private Barcode barcode = null;

public BarbecueRenderer(Barcode barcode) 
{
    this(barcode, false);
}

public BarbecueRenderer(Barcode barcode, boolean rotate) 
{
    this.barcode = barcode;
    this.rotate = rotate;
}

// What should I use as the grx and rectangle objects?
public void render(Graphics2D grx, Rectangle2D rectangle) 
{
    if (barcode != null) 
    {
        Graphics2D graphics = (Graphics2D) grx.create();
        graphics.translate(rectangle.getX(), rectangle.getY());
        if (rotate)
        {
            graphics.translate(barcode.getBounds().getHeight(), 0);
            graphics.rotate(Math.PI / 2);
        }
        barcode.draw(graphics, 0, 0);
    }
}
}

我需要的是这样的：

 Barcode barcode = BarcodeFactory.createCode39("128", false);
 // rotate the barcode
 File f = new File ("c:\\barcode.jpg");
 BarcodeImageHandler.saveJPEG(barcode, f);

解决方法:

在jasper reports 4.0.2中,您可以简单地编辑jrxml并将rotation属性添加到jr：barbecue元素.

<jr:barbecue xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd" type="Code128" drawText="true" checksumRequired="true" rotation="Right">

可能的值是任何有效的net.sf.jasperreports.engine.type.RotationEnum