package com.unclebae.image.hash;
import java.io.*;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class ImageHash {
public static final String HASHING_MD5 = "MD5";
public String hashing(String imagePath) {
if (imagePath == null) {
return null;
}
MessageDigest md = null;
try {
md = MessageDigest.getInstance(HASHING_MD5);
} catch (NoSuchAlgorithmException e) {
System.out.printf("There is not hasing algorithm.");
return null;
}
byte[] bytes = new byte[1024];
int readBytes = 0;
StringBuffer sb = new StringBuffer();
try {
InputStream resourceAsStream = new BufferedInputStream(new FileInputStream(new File(imagePath)));
while((readBytes = resourceAsStream.read(bytes)) != -1) {
md.update(bytes, 0, readBytes);
}
byte[] mdBytes = md.digest();
for (byte bt : mdBytes) {
sb.append(Integer.toString((bt & 0xff) + 0x100, 16).substring(1));
}
resourceAsStream.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
return sb.toString();
}
public static void main(String[] args) {
ImageHash hash = new ImageHash();
String hashing = hash.hashing("/Users/kido/Documents/사진/01.jpg");
System.out.println("Hash Result : " + hashing);
}
}
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