ImageUtil.java 圖片截取

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 ImageUtil {   public static void cutImg(int topSrc, int leftSrc, int cutWidthSrc, int cutHeightSrc, String imgSrc, String imgDist)   {     FileInputStream is = null;     ImageInputStream iis = null;     try     {       is = new FileInputStream(imgSrc);        String format = imgSrc.substring(imgSrc.lastIndexOf(".") + 1).toLowerCase();        Iterator it = ImageIO.getImageReadersByFormatName(format);       ImageReader reader = (ImageReader)it.next();        iis = ImageIO.createImageInputStream(is);       reader.setInput(iis, true);       ImageReadParam param = reader.getDefaultReadParam();       Rectangle rect = new Rectangle(leftSrc, topSrc, cutWidthSrc, cutHeightSrc);        param.setSourceRegion(rect);       BufferedImage bi = reader.read(0, param);        File fileTemp = new File(imgDist);       if (!(fileTemp.getParentFile().exists())) {         fileTemp.getParentFile().mkdirs();       }       if (fileTemp.exists()) {         fileTemp.delete();       }       ImageIO.write(bi, format, fileTemp);     } catch (Exception e) {       e.printStackTrace();     } finally {       if (is != null)         try {           is.close();         } catch (IOException localIOException2) {         }       if (iis != null)         try {           iis.close();         }         catch (IOException localIOException3)         {         }     }   } }

 

配合http://www.zhangxinxu.com/jq/jcrop_zh/demo/crop.php使用