md5算法

import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import sun.misc.BASE64Encoder; public class MD5Util { public static String md5(String msg) { try { MessageDigest md = MessageDigest.getInstance("md5"); BASE64Encoder encoder = new BASE64Encoder(); return encoder.encode(md.digest(msg.getBytes())); } catch (NoSuchAlgorithmException e) { return null; } } public static void main(String[] args) { System.out.println(md5("")); } }