// --------------加密 和解密-----開始-------------

	private final static String DES = "DES";

	private final static String key = "3214324242332";

	/**
	 * Description 根據鍵值進行加密
	 * 
	 * @param data
	 * @param key
	 *            加密鍵byte陣列
	 * @return
	 * @throws Exception
	 */
	public static String encryptjm(String data) throws Exception {
		byte[] bt = encrypt(data.getBytes(), key.getBytes());
		String strs = Base64.encodeBase64String(bt);
		// String strs = new BASE64Encoder().encode(bt);
		// String strs = new Base64Encoder().encode(bt);
		return strs;
	}

	/**
	 * Description 根據鍵值進行解密
	 * 
	 * @param data
	 * @param key
	 *            加密鍵byte陣列
	 * @return
	 * @throws IOException
	 * @throws Exception
	 */
	public static String decryptjm(String data) throws IOException, Exception {
		if (data == null)
			return null;
		byte[] buf = Base64.decodeBase64(data);
		byte[] bt = decrypt(buf, key.getBytes());
		return new String(bt);
	}

	/**
	 * Description 根據鍵值進行加密
	 * 
	 * @param data
	 * @param key
	 *            加密鍵byte陣列
	 * @return
	 * @throws Exception
	 */
	private static byte[] encrypt(byte[] data, byte[] key) throws Exception {
		// 生成一個可信任的隨機數源
		SecureRandom sr = new SecureRandom();

		// 從原始金鑰資料建立DESKeySpec物件
		DESKeySpec dks = new DESKeySpec(key);

		// 建立一個金鑰工廠，然後用它把DESKeySpec轉換成SecretKey物件
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
		SecretKey securekey = keyFactory.generateSecret(dks);

		// Cipher物件實際完成加密操作
		Cipher cipher = Cipher.getInstance(DES);

		// 用金鑰初始化Cipher物件
		cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

		return cipher.doFinal(data);
	}

	/**
	 * Description 根據鍵值進行解密
	 * 
	 * @param data
	 * @param key
	 *            加密鍵byte陣列
	 * @return
	 * @throws Exception
	 */
	private static byte[] decrypt(byte[] data, byte[] key) throws Exception {
		// 生成一個可信任的隨機數源
		SecureRandom sr = new SecureRandom();

		// 從原始金鑰資料建立DESKeySpec物件
		DESKeySpec dks = new DESKeySpec(key);

		// 建立一個金鑰工廠，然後用它把DESKeySpec轉換成SecretKey物件
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
		SecretKey securekey = keyFactory.generateSecret(dks);

		// Cipher物件實際完成解密操作
		Cipher cipher = Cipher.getInstance(DES);

		// 用金鑰初始化Cipher物件
		cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

		return cipher.doFinal(data);
	}

	/**
	 * Description 獲取字串MD5值
	 * 
	 * @param sourceStr
	 */
	private static String MD5(String sourceStr) {
		String result = "";
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(sourceStr.getBytes());
			byte b[] = md.digest();
			int i;
			StringBuffer buf = new StringBuffer("");
			for (int offset = 0; offset < b.length; offset++) {
				i = b[offset];
				if (i < 0)
					i += 256;
				if (i < 16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}
			result = buf.toString();
			// System.out.println("MD5(" + sourceStr + ",32) = " + result);
			// System.out.println("MD5(" + sourceStr + ",16) = " +
			// buf.toString().substring(8, 24));
		} catch (NoSuchAlgorithmException e) {
			// log.error(e.getMessage());
		}
		return result;
	}