java获取照片相关属性

package test;

import java.io.File;
import java.util.Iterator;

import com.drew.imaging.jpeg.JpegMetadataReader;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.Tag;
import com.drew.metadata.exif.ExifDirectory;

/**
* 测试用于读取图片的EXIF信息
*/
public class ExifTester {
public static void main(String[] args) throws Exception {
File jpegFile = new File("E:\\图片\\2.JPG");
Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);
Directory exif = metadata.getDirectory(ExifDirectory.class);
Iterator tags = exif.getTagIterator();
while (tags.hasNext()) {
Tag tag = (Tag)tags.next();
System.out.println(tag);
}
}
}

运行结果
[Exif] Thumbnail Image Width - 2896 pixels
[Exif] Thumbnail Image Height - 1944 pixels
[Exif] Bits Per Sample - 8 8 8 bits/component/pixel
[Exif] Make - NIKON CORPORATION
[Exif] Model - NIKON D200
[Exif] Orientation - Top, left side (Horizontal / normal)
[Exif] Samples Per Pixel - 3 samples/pixel
[Exif] X Resolution - 300 dots per inch
[Exif] Y Resolution - 300 dots per inch
[Exif] Resolution Unit - Inch
[Exif] Software - Adobe Photoshop CC (Windows)
[Exif] Date/Time - 2014:05:04 13:17:26
[Exif] YCbCr Positioning - Datum point
[Exif] Exposure Time - 1/640 sec
[Exif] F-Number - F4.5
[Exif] Exposure Program - Aperture priority
[Exif] ISO Speed Ratings - 125
[Exif] Exif Version - 2.21
[Exif] Date/Time Original - 2014:05:02 15:00:40
[Exif] Date/Time Digitized - 2014:05:02 15:00:40
[Exif] Components Configuration - YCbCr
[Exif] Compressed Bits Per Pixel - 4 bits/pixel
[Exif] Shutter Speed Value - 1/639 sec
[Exif] Aperture Value - F4.5
[Exif] Exposure Bias Value - 2/3 EV
[Exif] Max Aperture Value - F4.4
[Exif] Metering Mode - Center weighted average
[Exif] Light Source - Unknown
[Exif] Flash - Flash did not fire
[Exif] Focal Length - 70.0 mm
[Exif] User Comment - XCB
[Exif] Sub-Sec Time - 90
[Exif] Sub-Sec Time Original - 90
[Exif] Sub-Sec Time Digitized - 90
[Exif] FlashPix Version - 1.00
[Exif] Color Space - sRGB
[Exif] Exif Image Width - 1944 pixels
[Exif] Exif Image Height - 1944 pixels
[Exif] Sensing Method - One-chip color area sensor
[Exif] File Source - Digital Still Camera (DSC)
[Exif] Scene Type - Directly photographed image
[Exif] CFA Pattern - 0 2 0 2 1 0 2 1
[Exif] Custom Rendered - Normal process
[Exif] Exposure Mode - Auto exposure
[Exif] White Balance - Auto white balance
[Exif] Digital Zoom Ratio - 1
[Exif] Focal Length 35 - 1mm
[Exif] Scene Capture Type - Standard
[Exif] Gain Control - None
[Exif] Contrast - None
[Exif] Saturation - High saturation
[Exif] Sharpness - Hard
[Exif] Subject Distance Range - Unknown

获取需要的数据

package test;

import java.io.File;
import java.util.Iterator;

import com.drew.imaging.jpeg.JpegMetadataReader;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.exif.ExifDirectory;

/**
* 测试用于读取图片的EXIF信息
* @author Winter Lau
*/
public class PicExif {
public static void main(String[] args) throws Exception {
File jpegFile = new File(
"E:\\图片\\2.JPG");
Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);
Directory exif = metadata.getDirectory(ExifDirectory.class);
Iterator tags = exif.getTagIterator();

// while(tags.hasNext()){
// System.out.println(tags.next());
//	 Iterator s = exif.getTagIterator();
//	 while(s.hasNext()){
//		 System.out.println(s.next());
//	 }
// }

if(exif.containsTag(ExifDirectory.TAG_MODEL)){
System.out.println("相机型号："+exif.getDescription(ExifDirectory.TAG_MODEL));
}
if(exif.containsTag(ExifDirectory.TAG_EXPOSURE_TIME)){
System.out.println("曝光时间："+exif.getDescription(ExifDirectory.TAG_EXPOSURE_TIME));
}
if(exif.containsTag(ExifDirectory.TAG_DATETIME_ORIGINAL)){
System.out.println("拍摄时间："+exif.getDescription(ExifDirectory.TAG_DATETIME_ORIGINAL));
}
if(exif.containsTag(ExifDirectory.TAG_APERTURE)){
System.out.println("光圈值："+exif.getDescription(ExifDirectory.TAG_APERTURE));
}
if(exif.containsTag(ExifDirectory.TAG_FOCAL_LENGTH)){
System.out.println("焦距："+exif.getDescription(ExifDirectory.TAG_FOCAL_LENGTH));
}
if(exif.containsTag(ExifDirectory.TAG_THUMBNAIL_IMAGE_HEIGHT)){
System.out.println("图片尺寸："+exif.getDescription(ExifDirectory.TAG_THUMBNAIL_IMAGE_HEIGHT));
}

}
}

运行结果：

相机型号：NIKON D200
曝光时间：1/640 sec
拍摄时间：2014:05:02 15:00:40
光圈值：F4.5
焦距：70.0 mm
图片尺寸：1944 pixels