本文實例講述了java實現圖片裁切的工具類。分享給大家供大家參考，具體如下：
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"); } /** * 圖片裁切* @param x1 選擇區域左上角的x坐標* @param y1 選擇區域左上角的y坐標* @param width 選擇區域的寬度* @param height 選擇區域的高度* @param sourcePath 源圖片路徑* @param descpath 裁切後圖片的保存路徑*/ 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; } } }}希望本文所述對大家Java程序設計有所幫助。