public class Md5Util {	/**	 * md5加密的方法	 * @param text	 * @return	 */	public static String encode(String text){		try {			MessageDigest digest = MessageDigest.getInstance("MD5");			byte[] result = digest.digest(text.getBytes());			StringBuilder sb = new StringBuilder();			for(byte b : result){				int number = b&0xff; 				String hex = Integer.toHexString(number);				if(hex.length()==1){					sb.append("0");				}				sb.append(hex);			}			return sb.toString();		} catch (NoSuchAlgorithmException e) {			e.printStackTrace();			return "";		}	}}

MD5加密Java工具类