md5 对字符串进行加密的方法 简单好用

 1     public static String makeMD5(String password) {
 2         String result = null;
 3 
 4         MessageDigest messageDigest;
 5         try {
 6             messageDigest = MessageDigest.getInstance("MD5");
 7             messageDigest.update(password.getBytes());
 8             result = new BigInteger(1, messageDigest.digest()).toString(16);
 9         } catch (Exception e) {
10             e.printStackTrace();
11         }
12         return result;
13     }