1 package com.gnnuit.mobilesafe.util;
2
3 import java.security.MessageDigest;
4 import java.security.NoSuchAlgorithmException;
5
6 public class MD5Encoder {
7 /**
8 * MD5加密
9 *
10 * @param pwd要加密的数据
11 * @return 加密后的数据
12 * @throws Exception
13 */
14 public static String encode(String pwd) {
15 try {
16 MessageDigest digest = MessageDigest.getInstance("MD5");
17 byte[] bytes = digest.digest(pwd.getBytes());
18 StringBuffer sb = new StringBuffer();
19 for (int i = 0; i < bytes.length; i++) {
20 String s = Integer.toHexString(0xff & bytes[i]);
21 if (s.length() == 1) {
22 sb.append("0" + s);
23 } else {
24 sb.append(s);
25 }
26 }
27 return sb.toString();
28 } catch (NoSuchAlgorithmException e) {
29 // TODO Auto-generated catch block
30 e.printStackTrace();
31 throw new RuntimeException("永远不会发生");
32 }
33 }
34 }
