java代码：
1 public class AESCoder { 2 private static String CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding"; 3 private static String KEY_ALGORITHM = "AES"; 4 5 public static String decrypt(String sSrc, String sKey) throws Exception { 6 SecretKeySpec skeySpec = new SecretKeySpec(sKey.getBytes("ASCII"), KEY_ALGORITHM); 7 Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM); 8 cipher.init(2, skeySpec); 9 byte[] encrypted1 = hex2byte(sSrc); 10 byte[] original = cipher.doFinal(encrypted1); 11 return new String(original); 12 } 13 14 public static String encrypt(String sSrc, String sKey) throws Exception { 15 SecretKeySpec skeySpec = new SecretKeySpec(sKey.getBytes("ASCII"), KEY_ALGORITHM); 16 Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM); 17 cipher.init(1, skeySpec); 18 byte[] encrypted = cipher.doFinal(sSrc.getBytes("UTF-8")); 19 return byte2hex(encrypted); 20 } 21 22 private static byte[] hex2byte(String strhex) { 23 if (strhex == null) 24 return null; 25 26 int l = strhex.length(); 27 if (l % 2 == 1) 28 return null; 29 30 byte[] b = new byte[l / 2]; 31 for (int i = 0; i != l / 2; ++i) 32 b[i] = (byte) Integer.parseInt(strhex.substring(i * 2, i * 2 + 2), 16); 33 34 return b; 35 } 36 37 private static String byte2hex(byte[] b) { 38 String hs = ""; 39 String stmp = ""; 40 for (int n = 0; n < b.length; ++n) { 41 stmp = Integer.toHexString(b[n] & 0xFF); 42 if (stmp.length() == 1) 43 hs = hs + "0" + stmp; 44 else 45 hs = hs + stmp; 46 } 47 48 return hs.toUpperCase(); 49 }