Get the image file(s) some informations,Including the Make,Model,Date/Time,etc

This is a blog about how to get the image file(s) some informations.Including the Make,Model,Date/Tiime,etc.

while,how can do it? I should use a tool which name is :Exif,writed by Java,and now its version is 2.6.4.

and you can get more from the here. or osChina

How does it work?

while,I hava a demo and I will show the complete code to you.

/**
 * 
 */
package com.b510.test;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

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 com.drew.metadata.exif.ExifIFD0Directory;
/**
 * only handle the "jpeg" format image file(s)<br>
 * <a href="https://drewnoakes.com/code/exif/">Get more about the Exif>></a>
 * @author Hongten
 * @date 2013-12-20
 */
public class ExifTester {
    
    //separating character
    public static final String LINE = "-";
    public static final String RIGHT_PARENTHESES = "]";
    
    
    public static void main(String[] args) throws Exception {
        //if you want to run this code.you should be rewrite the following array of String.
        //and be sure the correct path of the image file
        String[] pathNames = { 
                "C:/2013-02-08_12-24-54_100.jpg",//motorola ME865
                "C:/20022013011.jpg",//nokia 6700s
                "C:/IMG_0018.JPG",//download from web site
                "C:/IMG_0697.JPG", //ipad4
                "C:/P1080402.JPG"//Panasonic DMC-LX5
                };
        List<File> files = new ArrayList<File>();
        for (String pathname : pathNames) {
            File file = new File(pathname);
            files.add(file);
        }
        List<Map<String, String>> imagesInfo = getImageInfoOfExif(files);
        printImagesInfo(imagesInfo);
        //Get the image file informations
        File file = new File("C:/IMG_0697.JPG");
        Map<String, String> map = getImageInfoOfExif(file);
        System.out.println("##### the image file informations");
        HandleMap(map);
     }

    /**
     * print the abstracts of image file 
     * @param imagesInfo
     */
    private static void printImagesInfo(List<Map<String, String>> imagesInfo) {
        if(!imagesInfo.isEmpty()){
            for(Map<String, String> map: imagesInfo){
                HandleMap(map);
                System.out.println("======================================");
            }
        }
    }

    /**
     * @param map
     */
    private static void HandleMap(Map<String, String> map) {
        Iterator<String> iterator = map.keySet().iterator();
        while (iterator.hasNext()) {
            String name = iterator.next();
            String value = map.get(name);
            printInfo(name, value);
        }
    }

    /**
     * @param name
     * @param value
     */
    private static void printInfo(String name, String value) {
        System.out.println(name + " : " + value);
    }

    /**
     * get the abstracts of the image file
     * @param jpegFile
     * @return
     * @throws JpegProcessingException
     * @throws IOException
     */
    @SuppressWarnings("unchecked")
    private static Map<String, String> getImageInfoOfExif(File jpegFile) throws JpegProcessingException, IOException {
        Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);
        Directory exifDirectory = metadata.getDirectory(ExifIFD0Directory.class);
        Collection tags = exifDirectory.getTags();
        Iterator iterator = tags.iterator();
        Map<String, String> abstractsMap = new HashMap<String, String>();
        while (iterator.hasNext()) {
            Tag tag = (Tag) iterator.next();
            String[] tagArrays = tag.toString().split(LINE);
            String[] abstracts = tagArrays[0].trim().split(RIGHT_PARENTHESES);
            abstractsMap.put(abstracts[1].trim(), tagArrays[1].trim());
        }
        return abstractsMap;
    }
    
    /**
     * handle more than one image files
     * @param files
     * @return
     * @throws JpegProcessingException
     * @throws IOException
     */
    private static List<Map<String, String>> getImageInfoOfExif(List<File> files) throws JpegProcessingException, IOException{
        if(files == null)return null;
        List<Map<String, String>> list = new ArrayList<Map<String,String>>();
        if(files.size() > 0){
            for(File file: files){
                Map<String, String> map = getImageInfoOfExif(file);
                list.add(map);
            }
        }
        return list;
    }
}

and the output as following:

Date/Time : 2013:02:08 12:24:53
Model : ME865
X Resolution : 72 dots per inch
YCbCr Positioning : Center of pixel array
Resolution Unit : Inch
Y Resolution : 72 dots per inch
Make : Motorola
======================================
Orientation : Top, left side (Horizontal / normal)
Model : 6700s
X Resolution : 300 dots per inch
YCbCr Positioning : Center of pixel array
Resolution Unit : Inch
Y Resolution : 300 dots per inch
Make : Nokia
======================================
Orientation : Top, left side (Horizontal / normal)
X Resolution : 72 dots per inch
YCbCr Positioning : Center of pixel array
Resolution Unit : Inch
Y Resolution : 72 dots per inch
======================================
Software : 6.1.3
Date/Time : 2013:06:27 23:31:19
Orientation : Right side, top (Rotate 90 CW)
Model : iPad
X Resolution : 72 dots per inch
YCbCr Positioning : Center of pixel array
Resolution Unit : Inch
Y Resolution : 72 dots per inch
Make : Apple
======================================
Software : Ver.1.0
Unknown tag (0xc4a5) : [208 bytes]
Model : DMC
Orientation : Top, left side (Horizontal / normal)
YCbCr Positioning : Datum point
Unknown tag (0xc6d3) : [128 bytes]
Date/Time : 2013:01:04 00:01:06
X Resolution : 180 dots per inch
Unknown tag (0xc6d2) : [64 bytes]
Resolution Unit : Inch
Artist : 
Y Resolution : 180 dots per inch
Make : Panasonic
======================================
##### the image file informations
Software : 6.1.3
Date/Time : 2013:06:27 23:31:19
Orientation : Right side, top (Rotate 90 CW)
Model : iPad
X Resolution : 72 dots per inch
YCbCr Positioning : Center of pixel array
Resolution Unit : Inch
Y Resolution : 72 dots per inch
Make : Apple

it work and the output is so cool.

then, you should have a try!