图片裁剪工具类（支持jpg,png,bmp,gif(剪切后为静态)）

import java.awt.Rectangle;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.Iterator;import javax.imageio.ImageIO;import javax.imageio.ImageReadParam;import javax.imageio.ImageReader;import javax.imageio.stream.ImageInputStream;/** * 图片裁剪操作 * @author  */public class ImageCutUtil {/**     * 获取图片宽度     * @param file  图片文件     * @return 宽度     */    public static int getImgWidth(File file) {        InputStream is = null;        BufferedImage src = null;        int ret = -1;        try {            is = new FileInputStream(file);            src = javax.imageio.ImageIO.read(is);            ret = src.getWidth(null); // 得到源图宽            is.close();        } catch (Exception e) {        e.printStackTrace();        }        return ret;    }        /**     * 获取图片高度     * @param sourcePath  图片路径     * @return 宽度     */    public static int getImgWidth(String sourcePath) {       File file=new File(sourcePath);       return getImgWidth(file);    }        /**     * 获取图片高度     * @param file  图片文件     * @return 高度     */    public static int getImgHeight(File file) {        InputStream is = null;        BufferedImage src = null;        int ret = -1;        try {            is = new FileInputStream(file);            src = javax.imageio.ImageIO.read(is);            ret = src.getHeight(null); // 得到源图高            is.close();        } catch (Exception e) {        e.printStackTrace();        }        return ret;    }        /**     * 获取图片高度     * @param sourcePath  图片路径     * @return 高度     */    public static int getImgHeight(String sourcePath) {     File file=new File(sourcePath);         return getImgHeight(file);    }/** * 图片裁切 * 选择的总区域必须与图片原始大小相同 * @param X 选择区域左上角的x坐标 * @param Y 选择区域左上角的y坐标 * @param width 选择区域的宽度 * @param height 选择区域的高度 * @param sourcePath 源图片路径 * @param descpath 裁切后图片的保存路径 */public static void cut(int X, int Y, int width, int height,String sourcePath, String descpath) {FileInputStream is = null;ImageInputStream iis = null;try {is = new FileInputStream(sourcePath);String fileSuffix = sourcePath.substring(sourcePath.lastIndexOf(".") + 1);Iterator<ImageReader> it = ImageIO.getImageReadersByFormatName(fileSuffix);ImageReader reader = it.next();iis = ImageIO.createImageInputStream(is);reader.setInput(iis, true);ImageReadParam param = reader.getDefaultReadParam();Rectangle rect = new Rectangle(X, Y, width, height);param.setSourceRegion(rect);BufferedImage bi = reader.read(0, param);ImageIO.write(bi, fileSuffix, new File(descpath));System.out.println("图片剪切成功,生成图片路径:"+descpath);} catch (Exception ex) {ex.printStackTrace();} finally {if (is != null) {try {is.close();} catch (IOException e) {e.printStackTrace();}is = null;}if (iis != null) {try {iis.close();} catch (IOException e) {e.printStackTrace();}iis = null;}}}/** * 图片裁切 * 选择的总区域与图片原始大小不同 * @param selectWidth 选择区域的宽度 * @param selectHeight 选择区域的高度 * @param selectX 选择区域左上角的x坐标 * @param selectY 选择区域左上角的y坐标 * @param areaWidth 选择区域总宽度 * @param areaHeight 选择区域总高度 * @param sourcePath 源图片路径 * @param descpath 裁切后图片的保存路径 */public static void cut(int areaWidth, int areaHeight,int selectX, int selectY, int selectWidth, int selectHeight,String sourcePath, String descpath) {int imgWidth=getImgWidth(sourcePath);int imgHeight=getImgHeight(sourcePath);int X=selectX*imgWidth/areaWidth;int Y=selectY*imgHeight/areaHeight;int width=selectWidth*imgWidth/areaWidth;int height=selectHeight*imgHeight/areaHeight;cut(X, Y, width, height, sourcePath, descpath);}public static void main(String[] args) {System.out.println("图片的宽度:"+getImgWidth("d:/1.bmp"));System.out.println("图片的高度:"+getImgHeight("d:/1.bmp"));ImageCutUtil.cut(30, 50, 300, 400, "d:/1.bmp", "d:/2.bmp");}}