图片旋转的代码

** *//**

 

 

 

     * 旋转图片为指定角度

 

     *

 

 

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     * @param bufferedimage

 

 

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     *            目标图像

 

 

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     * @param degree

 

 

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     *            旋转角度

 

 

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     * @return

 

 

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     */

 

 

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    public static BufferedImage rotateImage(final BufferedImage bufferedimage,

 

 

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            final int degree) ...{

 

 

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        int w = bufferedimage.getWidth();

 

 

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        int h = bufferedimage.getHeight();

 

 

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        int type = bufferedimage.getColorModel().getTransparency();

 

 

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        BufferedImage img;

 

 

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        Graphics2D graphics2d;

 

 

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        (graphics2d = (img = new BufferedImage(w, h, type))

 

 

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                .createGraphics()).setRenderingHint(

 

 

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                RenderingHints.KEY_INTERPOLATION,

 

 

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                RenderingHints.VALUE_INTERPOLATION_BILINEAR);

 

 

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        graphics2d.rotate(Math.toRadians(degree), w / 2, h / 2);

 

 

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        graphics2d.drawImage(bufferedimage, 0, 0, null);

 

 

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        graphics2d.dispose();

 

 

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        return img;

 

 

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    }

 

 

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    /** *//**

 

 

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     * 变更图像为指定大小

 

 

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     *

 

 

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     * @param bufferedimage

 

 

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     *            目标图像

 

 

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     * @param w

 

 

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     *            宽

 

 

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     * @param h

 

 

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     *            高

 

 

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     * @return

 

 

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     */

 

 

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    public static BufferedImage resizeImage(final BufferedImage bufferedimage,

 

 

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            final int w, final int h) ...{

 

 

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        int type = bufferedimage.getColorModel().getTransparency();

 

 

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        BufferedImage img;

 

 

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        Graphics2D graphics2d;

 

 

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        (graphics2d = (img = createImage(w, h, type))

 

 

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                .createGraphics()).setRenderingHint(

 

 

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                RenderingHints.KEY_INTERPOLATION,

 

 

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                RenderingHints.VALUE_INTERPOLATION_BILINEAR);

 

 

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        graphics2d.drawImage(bufferedimage, 0, 0, w, h, 0, 0, bufferedimage

 

 

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                .getWidth(), bufferedimage.getHeight(), null);

 

 

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        graphics2d.dispose();

 

 

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        return img;

 

 

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    }

 

 

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    /** *//**

 

 

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     * 水平翻转图像

 

 

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     *

 

 

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     * @param bufferedimage 目标图像

 

 

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     * @return

 

 

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     */

 

 

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    public static BufferedImage flipImage(final BufferedImage bufferedimage) ...{

 

 

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        int w = bufferedimage.getWidth();

 

 

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        int h = bufferedimage.getHeight();

 

 

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        BufferedImage img;

 

 

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        Graphics2D graphics2d;

 

 

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        (graphics2d = (img = createImage(w, h, bufferedimage

 

 

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                .getColorModel().getTransparency())).createGraphics())

 

 

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                .drawImage(bufferedimage, 0, 0, w, h, w, 0, 0, h, null);

 

 

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        graphics2d.dispose();

 

 

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        return img;

 

 

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    }

文章出处：飞诺网(www.diybl.com):http://www.diybl.com/course/3_program/java/javajs/200823/98524.html