package com.drew.metadata;  
import java.io.File;  

import com.drew.imaging.ImageMetadataReader;  
import com.drew.imaging.ImageProcessingException;  
/**
 * java读取照片信息
 */
public class SampleUsage{
	public static void main(String[] args) throws Exception, Exception{  
        File file = new File("E:\\带有地理位置的图片.jpg");  
        printImageTags(file);
    } 
    /** 
     * 读取照片里面的信息 
     */ 
    private static void printImageTags(File file) throws ImageProcessingException, Exception{  
    	Metadata metadata = ImageMetadataReader.readMetadata(file);  
        for (Directory directory : metadata.getDirectories()) {  
            for (Tag tag : directory.getTags()) {  
                String tagName = tag.getTagName();  //标签名
                String desc = tag.getDescription(); //标签信息
                if (tagName.equals("Image Height")) {  
                	System.out.println("图片高度: "+desc);
                } else if (tagName.equals("Image Width")) {  
                	System.out.println("图片宽度: "+desc);
                } else if (tagName.equals("Date/Time Original")) {  
                	System.out.println("拍摄时间: "+desc);
                }else if (tagName.equals("GPS Latitude")) {  
                	System.err.println("纬度 : "+desc);
//                	System.err.println("纬度(度分秒格式) : "+pointToLatlong(desc));
                } else if (tagName.equals("GPS Longitude")) {  
                	System.err.println("经度: "+desc);
//                	System.err.println("经度(度分秒格式): "+pointToLatlong(desc));
                }
            }  
        }  
    }  
    /** 
     * 经纬度格式  转换为  度分秒格式 ,如果需要的话可以调用该方法进行转换
     * @param point 坐标点 
     * @return 
     */ 
    public static String pointToLatlong (String point ) {  
        Double du = Double.parseDouble(point.substring(0, point.indexOf("°")).trim());  
        Double fen = Double.parseDouble(point.substring(point.indexOf("°")+1, point.indexOf("'")).trim());  
        Double miao = Double.parseDouble(point.substring(point.indexOf("'")+1, point.indexOf("\"")).trim());  
        Double duStr = du + fen / 60 + miao / 60 / 60 ;  
        return duStr.toString();  
    }  
}