Java实现图片旋转、指定图像大小和水平翻转

package com.zeph.j2se.image; import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.image.BufferedImage; public class ImageOperate { /** * 旋转图片为指定角度 *  * @param bufferedimage *   目标图像 * @param degree *   旋转角度 * @return */ public static BufferedImage rotateImage(final BufferedImage bufferedimage, final int degree) { int w = bufferedimage.getWidth(); int h = bufferedimage.getHeight(); int type = bufferedimage.getColorModel().getTransparency(); BufferedImage img; Graphics2D graphics2d; (graphics2d = (img = new BufferedImage(w, h, type)).createGraphics()) .setRenderingHint(RenderingHints.KEY_INTERPOLATION,  RenderingHints.VALUE_INTERPOLATION_BILINEAR); graphics2d.rotate(Math.toRadians(degree), w / 2, h / 2); graphics2d.drawImage(bufferedimage, 0, 0, null); graphics2d.dispose(); return img; }  /** * 变更图像为指定大小 *  * @param bufferedimage *   目标图像 * @param w *   宽 * @param h *   高 * @return */ public static BufferedImage resizeImage(final BufferedImage bufferedimage, final int w, final int h) { int type = bufferedimage.getColorModel().getTransparency(); BufferedImage img; Graphics2D graphics2d; (graphics2d = (img = new BufferedImage(w, h, type)).createGraphics()) .setRenderingHint(RenderingHints.KEY_INTERPOLATION,  RenderingHints.VALUE_INTERPOLATION_BILINEAR); graphics2d.drawImage(bufferedimage, 0, 0, w, h, 0, 0, bufferedimage.getWidth(), bufferedimage.getHeight(), null); graphics2d.dispose(); return img; }  /** * 水平翻转图像 *  * @param bufferedimage *   目标图像 * @return */ public static BufferedImage flipImage(final BufferedImage bufferedimage) { int w = bufferedimage.getWidth(); int h = bufferedimage.getHeight(); BufferedImage img; Graphics2D graphics2d; (graphics2d = (img = new BufferedImage(w, h, bufferedimage .getColorModel().getTransparency())).createGraphics()) .drawImage(bufferedimage, 0, 0, w, h, w, 0, 0, h, null); graphics2d.dispose(); return img; }}