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liuxiaolong

2019-05-09 0d1d88cdb668e75ea8609417ac18ae19947e9525

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package com.jeeplus.common.utils;
 
import com.drew.metadata.*;
import com.drew.metadata.exif.*;
import com.drew.imaging.jpeg.*;
import com.drew.lang.*;
import java.io.*;
 
public class ImageGeo {
    public double lat = 0.0;
    public double lon = 0.0;
    public double alt = 0.0;
    public boolean error = false;
 
    public ImageGeo(String filename) {
        try {
            error = false;
            File jpegFile = new File(filename);
            Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);
 
            GpsDirectory gpsdir = (GpsDirectory) metadata
                    .getDirectory(GpsDirectory.class);
            Rational latpart[] = gpsdir
                    .getRationalArray(GpsDirectory.TAG_GPS_LATITUDE);
            Rational lonpart[] = gpsdir
                    .getRationalArray(GpsDirectory.TAG_GPS_LONGITUDE);
            String northing = gpsdir
                    .getString(GpsDirectory.TAG_GPS_LATITUDE_REF);
            String easting = gpsdir
                    .getString(GpsDirectory.TAG_GPS_LONGITUDE_REF);
 
            try {
                alt = gpsdir.getDouble(GpsDirectory.TAG_GPS_ALTITUDE);
            } catch (Exception ex) {
            }
 
            double latsign = 1.0d;
            if (northing.equalsIgnoreCase("S"))
                latsign = -1.0d;
            double lonsign = 1.0d;
            if (easting.equalsIgnoreCase("W"))
                lonsign = -1.0d;
            lat = (Math.abs(latpart[0].doubleValue())
                    + latpart[1].doubleValue() / 60.0d + latpart[2]
                    .doubleValue() / 3600.0d) * latsign;
            lon = (Math.abs(lonpart[0].doubleValue())
                    + lonpart[1].doubleValue() / 60.0d + lonpart[2]
                    .doubleValue() / 3600.0d) * lonsign;
 
            if (Double.isNaN(lat) || Double.isNaN(lon))
                error = true;
        } catch (Exception ex) {
            error = true;
        }
        System.out.println(filename + ": (" + lat + ", " + lon + ")");
    }
    
    public static void main(String[] args) {
        ImageGeo imageGeo = new ImageGeo(ImageGeo.class.getResource("IMAG0068.jpg").getFile());
        System.out.println(imageGeo.lon+","+imageGeo.lat);
    }
 
}