java实现图片裁切的工具类实例

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。