md5

public static String md5(String src){
        try {
            StringBuffer buffer = new StringBuffer();
            char[] chars = {‘0‘,‘1‘,‘2‘,‘3‘,‘4‘,‘5‘,‘6‘,‘7‘,‘8‘,‘9‘,‘A‘,‘B‘,‘C‘,‘D‘,‘E‘,‘F‘};
            byte[] bytes = src.getBytes();
            MessageDigest md = MessageDigest.getInstance("MD5");
            byte[] targ = md.digest(bytes);
            for(byte b: targ){
                buffer.append(chars[(b >> 4) & 0x0F]);
                buffer.append(chars[b & 0x0F]);
            }
            return buffer.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null ;
    }