谁有MD5加密算法的java类

fanyize 2012-05-09 12:42:39

谁有MD5加密算法的java类,急求！！！

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ylovep 2012-05-09

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 private static String getMD5Str(String str) {   

        MessageDigest messageDigest = null;   

        try {   

            messageDigest = MessageDigest.getInstance("MD5");   

            messageDigest.reset();   

            messageDigest.update(str.getBytes("UTF-8"));   

        } catch (NoSuchAlgorithmException e) {   

            System.out.println("NoSuchAlgorithmException caught!");   

            System.exit(-1);   

        } catch (UnsupportedEncodingException e) {   

            e.printStackTrace();   

        }   

        byte[] byteArray = messageDigest.digest();   

        StringBuffer md5StrBuff = new StringBuffer();   

        for (int i = 0; i < byteArray.length; i++) {               

            if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)   

                md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));   

            else   

                md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));   

        }   

   

        return md5StrBuff.toString();   

    }