package com.up.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 OperateImage {	 private String srcpath; //原图路径 private String subpath; //目标存放路径 private String imageType; //图片类型 private int x; private int y; private int width; //图片目标宽度 private int height; //图片目标高度   public OperateImage() { }  public OperateImage(String srcpath, int x, int y, int width, int height) {  this.srcpath = srcpath;  this.x = x;  this.y = y;  this.width = width;  this.height = height; }  public int getHeight() {  return height; }  public void setHeight(int height) {  this.height = height; }  public String getSrcpath() {  return srcpath; }  public void setSrcpath(String srcpath) {  this.srcpath = srcpath;  if(srcpath != null) {   this.imageType = srcpath.substring(srcpath.indexOf(".")+1, srcpath.length());  } }  public String getSubpath() {  return subpath; }  public void setSubpath(String subpath) {  this.subpath = subpath; }  public int getWidth() {  return width; }  public void setWidth(int width) {  this.width = width; }  public int getX() {  return x; }  public void setX(int x) {  this.x = x; }  public int getY() {  return y; }  public void setY(int y) {  this.y = y; }  public String getImageType() {  return imageType; }  public void setImageType(String imageType) {  this.imageType = imageType; }  public boolean cut() throws IOException {	  FileInputStream is = null;	  ImageInputStream iis = null;	  boolean bol = false;	  try {		   is = new FileInputStream(srcpath);		   Iterator
     
       it = ImageIO.getImageReadersByFormatName(this.imageType);		   ImageReader reader = it.next();		   iis = ImageIO.createImageInputStream(is);		   reader.setInput(iis, true);		   ImageReadParam param = reader.getDefaultReadParam();		   Rectangle rect = new Rectangle(x, y, width, height);		   param.setSourceRegion(rect);		   BufferedImage bi = reader.read(0, param);             //实际高度大于目标高度或者实际宽度大于目标宽度则进行剪切           File o = new File(srcpath);           BufferedImage bii = ImageIO.read(o);           int itempWidth = bii.getWidth(); //实际宽度           int itempHeight = bii.getHeight(); //实际高度           if ((itempHeight > height) || (itempWidth > width)) {     		   ImageIO.write(bi, this.imageType, new File(subpath));    		   bol = true;            } 	  } finally {	   if (is != null)	    is.close();	   if (iis != null)	    iis.close();	  }	  return bol; }   public static void main(String[] args) {  OperateImage o = new OperateImage("E:\\testdata\\1.jpg", 0, 0, 100, 100);  o.setSubpath("E:\\testdata\\2.jpg");    o.setImageType("jpg");   try {   o.cut();  } catch (IOException e) {   e.printStackTrace();  } }}