Java——Image 图片切割

package com.tb.image;

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 CutImage {

    /**
     * @param args
     */
    public static void main(String[] args) {
        //1.
//        for(int i=0;i<=220;i=i+30)
//        {
//            //CutImage.cut(0, i, 300, 30, "f:/1.jpg", "f:/new"+i/30+".jpg");
//        }
        //2.
//        CutImage.cut(60, 90, 300, 30, "f:/1.jpg", "f:/103.jpg");
        //3.
        for(int i=0;i<=6000;i=i+300)
        {
            //CutImage.cut(0, i, 300, 30, "f:/1.jpg", "f:/new"+i/30+".jpg");
            CutImage.cut(0, i, 600, 300, "D:/Program Files/apache-tomcat-7.0.52/webapps/taobaoCsv/big/big.jpg",
                    "D:/Program Files/apache-tomcat-7.0.52/webapps/taobaoCsv/cutimages/cut"+i/300+".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 {
            // 读取图片文件
            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;
            }
        }

    }