public class Md5 {

    public static String getMd5(String s) {

        char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',

                'a', 'b', 'c', 'd', 'e', 'f' };

        try {

            byte[] strTemp = s.getBytes();

            MessageDigest mdTemp = MessageDigest.getInstance("md5");

            mdTemp.update(strTemp);

            byte[] md = mdTemp.digest();

            int j = md.length;

            char str[] = new char[j * 2];

            int k = 0;

            for (int i = 0; i < j; i++) {

                byte byte0 = md[i];

                str[k++] = hexDigits[byte0 >>> 4 & 0xf];

                str[k++] = hexDigits[byte0 & 0xf];

            }

            return new String(str);

        } catch (Exception e) {

            return null;

        }

    }

    /**

     * 标准MD5加密

     *

     * @param inStr

     * @return

     * @throws Exception

     */

    public static String toMD5(String inStr) {

        StringBuffer sb = new StringBuffer();

        try {

            MessageDigest md = MessageDigest.getInstance("MD5");

            md.update(inStr.getBytes());

            byte b[] = md.digest();

            int i;

            for (int offset = 0; offset < b.length; offset++) {

                i = b[offset];

                if (i < 0)

                    i += 256;

                if (i < 16)

                    sb.append("0");

                sb.append(Integer.toHexString(i));

            }

        } catch (Exception e) {

            return null;

            // e.printStackTrace();

        }

        return sb.toString().toUpperCase();

    }

    public static void main(String[] args) throws Exception {

        System.out.println(toMD5("MATICSOFT").toUpperCase());

        System.out.println(getMd5("MATICSOFT").toUpperCase());

    }

}