夢幻之旅

import java.util.Properties;
import org.hibernate.HibernateException;
import org.hibernate.cfg.Environment;
import org.hibernate.connection.DriverManagerConnectionProvider;
public class CustomDriverManagerConnectionProvider extends
DriverManagerConnectionProvider {
public CustomDriverManagerConnectionProvider() {
super();
}
@Override
public void configure(Properties props) throws HibernateException{
String user = props.getProperty(Environment.USER);
String password = props.getProperty(Environment.PASS);
props.setProperty(Environment.USER, SecUtil.decrypt(user));
props.setProperty(Environment.PASS, SecUtil.decrypt(password));
super.configure(props);
}
}

再寫一個類，使用AES負責字符串的加密與解密這里我們參照原作者的方法

/**
* AES加密工具
*
* @author Bany
*
* @version 創建時間：2008-8-5 上午10:58:16
*
*/
public class SecUtil {
private static byte[] keybytes = { 0x31, 0x32, …… };
public static void main(String[] args) throws Exception {
String e1 = encrypt("newpassword");
System.out.println(e1);
String e2 = decrypt(e1);
System.out.println(e2);
}
/**
* 加密
* @param value
* @return
*/
public static String encrypt(String value) {
String s=null;
int mode = Cipher.ENCRYPT_MODE;
try {
Cipher cipher = initCipher(mode);
byte[] outBytes = cipher.doFinal(value.getBytes());
s = String.valueOf(Hex.encodeHex(outBytes));
} catch (Exception e) {
e.printStackTrace();
}
return s;
}
/**
* 解密
* @param value
* @return
*/
public static String decrypt(String value) {
String s = null;
int mode = Cipher.DECRYPT_MODE;
try {
Cipher cipher = initCipher(mode);
byte[] outBytes = cipher.doFinal(Hex.decodeHex(value.toCharArray()));
s = new String(outBytes);
} catch (Exception e) {
e.printStackTrace();
}
return s;
}
private static Cipher initCipher(int mode) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException{
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
Key key = new SecretKeySpec(keybytes, "AES");
cipher.init(mode, key);
return cipher;
}
}

當然，你也可以使用自己寫的加密方法，或者是Java官方推薦的一些加密方法
調用SecUtil.encrypt的方法，把用戶密碼加密生成密文，然后根據密文修改hibernate.cfg.xml文件