java代码

public static String md5(String str) {
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(str.getBytes());
            byte b[] = md.digest();

            int i;

            StringBuffer buf = new StringBuffer("");
            for (int offset = 0; offset < b.length; offset++) {
                i = b[offset];
                if (i < 0)
                    i += 256;
                if (i < 16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
            str = buf.toString();
        } catch (Exception e) {
            e.printStackTrace();

        }
        return str;
    }

 

c#代码

        public static string md5(string str)
        {
            try
            {
                MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
                byte[] bytValue, bytHash;
                bytValue = System.Text.Encoding.UTF8.GetBytes(str);
                bytHash = md5.ComputeHash(bytValue);
                md5.Clear();
                string sTemp = "";
                for (int i = 0; i < bytHash.Length; i++)
                {
                    sTemp += bytHash[i].ToString("X").PadLeft(2, '0');
                }
                str = sTemp.ToLower();
            }
            catch(Exception e)
            {
                Console.WriteLine(e.Message);
            }

            return str;
        }