本文实例讲述了java实现图片裁切的工具类。分享给大家供大家参考，具体如下：
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; } } }}希望本文所述对大家Java程序设计有所帮助。