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：
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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;
}
}
}
}
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希望本文所述对大家Java程序设计有所帮助。