Java 处理 iphone拍照后 图片EXIF属性翻转90度的方法

public static void main(String[] args) throws ImageProcessingException, IOException {
File jpegFile= new File("C:\\Users\\Administrator\\Desktop\\IMG_0362.JPG"); Metadata metadata = ImageMetadataReader.readMetadata(jpegFile);
Directory directory = metadata.getDirectory(ExifIFD0Directory.class);
JpegDirectory jpegDirectory = (JpegDirectory)metadata.getDirectory(JpegDirectory.class); // int orientation =0;
// Metadata metadata = JpegMetadataReader.readMetadata(newFile);
// for (Directory directory : metadata.getDirectories())
// {
// for (Tag tag : directory.getTags())
// {
// if ("Orientation".equalsIgnoreCase(tag.getTagName()))
// {
// orientation=getOrientation(tag.getDescription());
// }
// }
// }
// Integer turn=360;
// if(orientation==0||orientation==1)
// {
// turn=360;
// }
// else if(orientation==3)
// {
// turn=180;
// }
// else if(orientation==6)
// {
// turn=90;
// }
// else if(orientation==8)
// {
// turn=270;
// } int orientation = 1;
try {
orientation = directory.getInt(ExifIFD0Directory.TAG_ORIENTATION);
} catch (MetadataException me) {
logger.warn("Could not get orientation");
} System.out.println(orientation); BufferedImage src = ImageIO.read(jpegFile);
BufferedImage des = RotateImage.Rotate(src, 90);
ImageIO.write(des,"jpg", new File("C:\\Users\\Administrator\\Desktop\\IMG_0362.JPG")); // FileInputStream fip = new FileInputStream(jpegFile);
// LLJTran llj = new LLJTran(fip);
// try {
// llj.read(LLJTran.READ_INFO, true);
// } catch (LLJTranException e) {
// e.printStackTrace();
// }
//
// Exif exif = (Exif) llj.getImageInfo();
// Entry e = new Entry(Exif.RATIONAL);
// exif.setTagValue(Exif.ORIENTATION_TOPLEFT,1,e,true);
// llj.refreshAppx(); // Recreate Marker Data for changes done
// //改写后的文件，文件必须存在
// OutputStream out = new BufferedOutputStream(new FileOutputStream("C:\\Users\\Administrator\\Desktop\\IMG_0362.JPG"));
// // Transfer remaining of image to output with new header.
// try {
// llj.xferInfo(null, out, LLJTran.REPLACE, LLJTran.REPLACE);
// } catch (LLJTranException e1) {
// e1.printStackTrace();
// }
// fip.close();
// out.close();
// llj.freeMemory();
} public static int getOrientation(String orientation)
{
int tag = 0;
if ("Top, left side (Horizontal / normal)".equalsIgnoreCase(orientation)) {
tag = 1;
} else if ("Top, right side (Mirror horizontal)".equalsIgnoreCase(orientation)) {
tag = 2;
} else if ("Bottom, right side (Rotate 180)".equalsIgnoreCase(orientation)) {
tag = 3;
} else if ("Bottom, left side (Mirror vertical)".equalsIgnoreCase(orientation)) {
tag = 4;
} else if ("Left side, top (Mirror horizontal and rotate 270 CW)".equalsIgnoreCase(orientation)) {
tag = 5;
} else if ("Right side, top (Rotate 90 CW)".equalsIgnoreCase(orientation)) {
tag = 6;
} else if ("Right side, bottom (Mirror horizontal and rotate 90 CW)".equalsIgnoreCase(orientation)) {
tag = 7;
} else if ("Left side, bottom (Rotate 270 CW)".equalsIgnoreCase(orientation)) {
tag = 8;
}
return tag;
}

package com.xxxx.xxx.xxx.xxx; import java.awt.*;
import java.awt.image.BufferedImage; /**
* Created by Administrator on 2015/12/15.
*/
public class RotateImage {
public static BufferedImage Rotate(Image src, int angel) {
int src_width = src.getWidth(null);
int src_height = src.getHeight(null);
// calculate the new image size
Rectangle rect_des = CalcRotatedSize(new Rectangle(new Dimension(
src_width, src_height)), angel); BufferedImage res = null;
res = new BufferedImage(rect_des.width, rect_des.height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = res.createGraphics();
// transform
g2.translate((rect_des.width - src_width) / 2,
(rect_des.height - src_height) / 2);
g2.rotate(Math.toRadians(angel), src_width / 2, src_height / 2); g2.drawImage(src, null, null);
return res;
} public static Rectangle CalcRotatedSize(Rectangle src, int angel) {
// if angel is greater than 90 degree, we need to do some conversion
if (angel >= 90) {
if(angel / 90 % 2 == 1){
int temp = src.height;
src.height = src.width;
src.width = temp;
}
angel = angel % 90;
} double r = Math.sqrt(src.height * src.height + src.width * src.width) / 2;
double len = 2 * Math.sin(Math.toRadians(angel) / 2) * r;
double angel_alpha = (Math.PI - Math.toRadians(angel)) / 2;
double angel_dalta_width = Math.atan((double) src.height / src.width);
double angel_dalta_height = Math.atan((double) src.width / src.height); int len_dalta_width = (int) (len * Math.cos(Math.PI - angel_alpha
- angel_dalta_width));
int len_dalta_height = (int) (len * Math.cos(Math.PI - angel_alpha
- angel_dalta_height));
int des_width = src.width + len_dalta_width * 2;
int des_height = src.height + len_dalta_height * 2;
return new Rectangle(new Dimension(des_width, des_height));
}
}

package testExif;import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;import javax.imageio.ImageIO;import com.drew.imaging.jpeg.JpegMetadataReader;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.exif.ExifDirectoryBase;; public class TestExif { public static void main(String[] args) throws Exception {
File file = new File("/pathToJepg/d3805d6c032a42feabce3deee74dfb6a.JPG");
Metadata metadata = JpegMetadataReader.readMetadata(file);
Directory directory = metadata.getFirstDirectoryOfType(ExifDirectoryBase.class);
int orientation=0;
if(directory != null && directory.containsTag(ExifDirectoryBase.TAG_ORIENTATION)){ // Exif信息中有保存方向,把信息复制到缩略图
orientation = directory.getInt(ExifDirectoryBase.TAG_ORIENTATION); // 原图片的方向信息
System.out.println(orientation);
} if(orientation == 1){
System.out.println("rotate 90");
BufferedImage src = ImageIO.read(file);
BufferedImage des = RotateImage.Rotate(src, 270);
ImageIO.write(des,"jpg", new File("D:/upload/20170224/raw/90.jpg"));
}
}
}

if(6 == orientation ){
//6旋转90
angle = 90;
}else if( 3 == orientation){
//3旋转180
angle = 180;
}else if( 8 == orientation){
//8旋转90
angle = 270;
}