1 public static String encode(String str) {
2 String encodeString = "";
3
4 try {
5 MessageDigest md = MessageDigest.getInstance("md5");
6 // 用MD5加密后的字节数组
7 byte[] digest = md.digest(str.getBytes());
8 for (byte b : digest) {
9 // 将前面的ffffff去掉
10 int temp = b & 0x000000ff;
11 // 得到16进制
12 String s = Integer.toHexString(temp);
13 // 使每一位上都有两个数
14 if (s.length() == 1) {
15 s = "0" + s;
16 }
17
18 encodeString += s;
19 }
20 } catch (NoSuchAlgorithmException e) {
21 // TODO Auto-generated catch block
22 e.printStackTrace();
23 }
24 return encodeString;
25 }
