使用 metadata-extractor 解析图片 exif 元数据信息
import java.io.File;import com.drew.imaging.ImageMetadataReader;import com.drew.metadata.Directory;import com.drew.metadata.Metadata;import com.drew.metadata.exif.ExifIFD0Directory;import com.drew.metadata.exif.ExifSubIFDDirectory;public class TestExif {/** * @param args * @throws Exception* @throws */public static void main(String[] args) throws Exception {File imgFile = new File("F:/IMG_0538.JPG");Metadata metadata = ImageMetadataReader.readMetadata(imgFile); for (Directory directory : metadata.getDirectories()) { if("ExifSubIFDDirectory".equalsIgnoreCase( directory.getClass().getSimpleName() )){ //光圈F值=镜头的焦距/镜头光圈的直径 System.out.println("光圈值: f/" + directory.getString(ExifSubIFDDirectory.TAG_FNUMBER) ); System.out.println("曝光时间: " + directory.getString(ExifSubIFDDirectory.TAG_EXPOSURE_TIME)+ "秒" ); System.out.println("ISO速度: " + directory.getString(ExifSubIFDDirectory.TAG_ISO_EQUIVALENT) ); System.out.println("焦距: " + directory.getString(ExifSubIFDDirectory.TAG_FOCAL_LENGTH) + "毫米" ); System.out.println("拍照时间: " + directory.getString(ExifSubIFDDirectory.TAG_DATETIME_ORIGINAL) ); System.out.println("宽: " + directory.getString(ExifSubIFDDirectory.TAG_EXIF_IMAGE_WIDTH) ); System.out.println("高: " + directory.getString(ExifSubIFDDirectory.TAG_EXIF_IMAGE_HEIGHT) ); } if("ExifIFD0Directory".equalsIgnoreCase( directory.getClass().getSimpleName() )){ System.out.println("照相机制造商: " + directory.getString(ExifIFD0Directory.TAG_MAKE) ); System.out.println("照相机型号: " + directory.getString(ExifIFD0Directory.TAG_MODEL) ); System.out.println("水平分辨率: " + directory.getString(ExifIFD0Directory.TAG_X_RESOLUTION) ); System.out.println("垂直分辨率: " + directory.getString(ExifIFD0Directory.TAG_Y_RESOLUTION) ); } }}}示例输出如下：
光圈值: f/4
曝光时间: 1/500秒
ISO速度: 80
焦距: 6毫米
拍照时间: 2011:06:11 08:05:40
宽: 3648
高: 2736
照相机制造商: Canon
照相机型号: Canon PowerShot SX120 IS
水平分辨率: 180
垂直分辨率: 180
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