java图片裁切工具类
package com.yanek.util;import java.awt.Rectangle;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.util.Iterator;import javax.imageio.ImageIO;import javax.imageio.ImageReadParam;import javax.imageio.ImageReader;import javax.imageio.stream.ImageInputStream;public class ImgCutUtil {/** * @param args */public static void main(String[] args) {ImgCutUtil.cut(30, 50, 300, 400, "d:/1.jpg", "d:/100.jpg");}/** * 图片裁切 * @param x1 选择区域左上角的x坐标 * @param y1 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 x1, int y1, 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(x1, y1, width, height);param.setSourceRegion(rect);BufferedImage bi = reader.read(0, param);ImageIO.write(bi, fileSuffix, new File(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;}}}}