Metadata-extractor读取图片的EXIF信息

导入依赖

		<dependency>
            <groupId>com.drewnoakes</groupId>
            <artifactId>metadata-extractor</artifactId>
            <version>2.7.2</version>
        </dependency>

实现

package com.etime.EXIF;

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

import java.io.File;
import java.io.IOException;

public class EXIFTest {
    public static void main(String[] args) {
        //获取图片
        File jpgFile = new File("D:"+File.separator+"picture"+File.separator+"test.jpg");
        //
        try {
            //获取图片的信息
            Metadata metadata = JpegMetadataReader.readMetadata(jpgFile);
            //metadata的信息存到Directory中
            /**其中有五项信息，每一项信息中都有多个tags
             * 所以进行双重遍历
             *JPEG Directory (8 tags)
             * JFIF Directory (4 tags)
             * Exif IFD0 Directory (6 tags)
             * Exif SubIFD Directory (5 tags)
             * GPS Directory (9 tags)
             */
            for (Directory directory : metadata.getDirectories()){
                //从每一个director中遍历获得tag
                for (Tag tag : directory.getTags()){
                    String tagName = tag.getTagName();//标签名
                    String description = tag.getDescription();//标签信息
                    System.out.println(tagName+"\t"+description);
                }
            }
        } catch (JpegProcessingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

结果

得到数据还需要经过处理才能具有可读性

Compression Type Progressive, Huffman
Data Precision 8 bits
Image Height 1920 pixels
Image Width 1440 pixels
Number of Components 3
Component 1 Y component: Quantization table 0, Sampling factors 2 horiz/2 vert
Component 2 Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert
Component 3 Cr component: Quantization table 1, Sampling factors 1 horiz/1 vert
Version 1.1
Resolution Units none
X Resolution 1 dot
Y Resolution 1 dot
Unknown tag (0x0100) 3456
Model BND-AL10
Unknown tag (0x0101) 4608
Make HUAWEI
Orientation Unknown (0)
Date/Time 2019:10:26 17:57:24
White Balance Mode Auto white balance
ISO Speed Ratings 500
Focal Length 3.83 mm
Flash Flash did not fire, auto
White Balance Unknown
GPS Latitude 31° 12’ 46.64"
GPS Altitude 0 metres
GPS Latitude Ref N
GPS Altitude Ref Below sea level
GPS Processing Method CELLID
GPS Longitude Ref E
GPS Time-Stamp 9:57:23 UTC
GPS Date Stamp 2019:10:26
GPS Longitude 107° 28’ 47.46"