java 图片压缩 iphone拍照上传旋转问题处理压缩工具类

package com.mofang.util; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Rectangle; import java.awt.Toolkit; import java.awt.color.ColorSpace; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import java.awt.image.ColorConvertOp; import java.awt.image.CropImageFilter; import java.awt.image.FilteredImageSource; import java.awt.image.ImageFilter; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.HashMap; import java.util.Map; import javax.imageio.ImageIO; import com.drew.imaging.ImageMetadataReader; import com.drew.imaging.ImageProcessingException; import com.drew.metadata.Directory; import com.drew.metadata.Metadata; import com.drew.metadata.exif.ExifIFD0Directory; import com.drew.metadata.exif.ExifSubIFDDirectory; /** * 图片处理工具类：<br> * 功能：缩放图像、切割图像、图像类型转换、彩色转黑白、文字水印、图片水印等 * * @author Administrator */ public class ImagesUtils { /** * 几种常见的图片格式 */ public static String IMAGE_TYPE_GIF = "gif";// 图形交换格式 public static String IMAGE_TYPE_JPG = "jpg";// 联合照片专家组 public static String IMAGE_TYPE_JPEG = "jpeg";// 联合照片专家组 public static String IMAGE_TYPE_BMP = "bmp";// 英文Bitmap（位图）的简写，它是Windows操作系统中的标准图像文件格式 public static String IMAGE_TYPE_PNG = "png";// 可移植网络图形 public static String IMAGE_TYPE_PSD = "psd";// Photoshop的专用格式Photoshop /** * 缩放图像（按比例缩放） * * @param srcImageFile * 源图像文件地址 * @param result * 缩放后的图像地址 * @param scale * 缩放比例 * @param flag * 缩放选择:true 放大; false 缩小; */ public final static void scale(String srcImageFile, String result, int scale, boolean flag,String hzm) { try { BufferedImage src = ImageIO.read(new File(srcImageFile)); // 读入文件 int width = src.getWidth(); // 得到源图宽 int height = src.getHeight(); // 得到源图长 if (flag) {// 放大 width = width * scale; height = height * scale; } else {// 缩小 width = width / scale; height = height / scale; } String filemk=result.substring(0, result.lastIndexOf("/")); File f1=new File(filemk); if (!f1.exists()) { f1.mkdirs(); } Image image = src.getScaledInstance(width, height, Image.SCALE_DEFAULT); BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); if(src.getAlphaRaster()!=null){ tag = new BufferedImage(width, height, BufferedImage. TYPE_4BYTE_ABGR); } Graphics g = tag.getGraphics(); g.drawImage(image, 0, 0, null); // 绘制缩小后的图 g.dispose(); ImageIO.write(tag, hzm, new File(result));// 输出到文件流 } catch (IOException e) { e.printStackTrace(); } } /** * 缩放图像（按高度和宽度缩放） * * @param srcImageFile * 源图像文件地址 * @param result * 缩放后的图像地址 * @param height * 缩放后的高度 * @param width * 缩放后的宽度 * @param bb * 比例不对时是否需要补白：true为补白; false为不补白; */ public final static void scale2(String srcImageFile,String pressImg, String result, int height, int width, boolean bb) { try { double ratio = 0.0; // 缩放比例 System.out.println(srcImageFile); File f = new File(srcImageFile); BufferedImage bi = ImageIO.read(f); Image itemp = bi.getScaledInstance(width, height, bi.SCALE_SMOOTH); if(bi.getHeight() > bi.getWidth()){ int ldata = 0; ldata = height; height = width; width = ldata; } double fwidth = width; double fheight = height; BufferedImage tag = null; System.out.println("(bi.getHeight()：" + bi.getHeight()); System.out.println("(bi.getHeight()：" + bi.getWidth()); // 计算比例 if ((bi.getHeight() > height) || (bi.getWidth() > width)) { if ((bi.getHeight() > height) || (bi.getWidth() > width)) { if (bi.getHeight() > bi.getWidth()) { ratio = (new Integer(height)).doubleValue() / bi.getHeight(); fwidth = bi.getWidth() * ratio; } else { ratio = (new Integer(width)).doubleValue() / bi.getWidth(); fheight = bi.getHeight() * ratio; } AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(ratio, ratio), null); itemp = op.filter(bi, null); CropImageFilter cropFilter = new CropImageFilter(0, 0, (int) fwidth, (int) fheight); Image img = Toolkit.getDefaultToolkit().createImage(new FilteredImageSource(itemp.getSource(), cropFilter)); tag = new BufferedImage((int) fwidth, (int) fheight, BufferedImage.TYPE_INT_RGB); Graphics2D g1 = tag.createGraphics(); g1.drawImage(img, 0, 0, null); // 水印文件 Image src_biao = ImageIO.read(new File(pressImg)); int wideth_biao = src_biao.getWidth(null); int height_biao = src_biao.getHeight(null); float apla = (float) 0.4; g1.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,apla)); g1.drawImage(src_biao, (int)(fwidth-wideth_biao-5), (int)(fheight - height_biao-5), wideth_biao, height_biao, null); // 水印文件结束 g1.dispose(); } if (bb) {// 补白 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.setColor(Color.white); g.fillRect(0, 0, width, height); if (width == itemp.getWidth(null)) g.drawImage(itemp, 0, (height - itemp.getHeight(null)) / 2, itemp.getWidth(null), itemp.getHeight(null), Color.white, null); else g.drawImage(itemp, (width - itemp.getWidth(null)) / 2, 0, itemp.getWidth(null), itemp.getHeight(null), Color.white, null); g.dispose(); itemp = image; } ImageIO.write(tag, "JPEG", new File(result)); } else { fwidth = bi.getWidth(); fheight = bi.getHeight(); BufferedImage image = new BufferedImage((int)fwidth, (int)fheight, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.drawImage(itemp, 0, 0, (int)fwidth, (int)fheight, null); // 水印文件 Image src_biao = ImageIO.read(new File(pressImg)); int wideth_biao = src_biao.getWidth(null); int height_biao = src_biao.getHeight(null); float alpha = (float) 0.3; g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); g.drawImage(src_biao, (int)(fwidth - wideth_biao - 5), (int)(fheight - height_biao - 5), wideth_biao, height_biao, null); // 水印文件结束 g.dispose(); ImageIO.write((BufferedImage) image, "JPEG", new File(result)); //Copy(srcImageFile, result); } } catch (IOException e) { e.printStackTrace(); } } /** * 缩放并切割图像（按高度和宽度缩放） * * @param srcImageFile * 源图像文件地址 * @param result * 缩放后的图像地址 * @param height * 缩放后的高度 * @param width * 缩放后的宽度 * @param bb * 比例不对时是否需要补白：true为补白; false为不补白; */ public final static void scale3(String srcImageFile, S