JAvaによるaes暗号化

package com.mobao.util;

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;

public class AESUtils {
	/**
	 *   
	 * 
	 * @param content
	 *                   
	 * @param password
	 *                
	 * @return
	 */
	public static byte[] encrypt2(byte[] byteContent, String password) {
		try {
			SecretKeySpec key = new SecretKeySpec(password.getBytes(), "AES");
			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
			cipher.init(Cipher.ENCRYPT_MODE, key);//    
			byte[] result = cipher.doFinal(byteContent);
			return result; //   
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		} catch (NoSuchPaddingException e) {
			e.printStackTrace();
		} catch (InvalidKeyException e) {
			e.printStackTrace();
		} catch (IllegalBlockSizeException e) {
			e.printStackTrace();
		} catch (BadPaddingException e) {
			e.printStackTrace();
		}
		return null;
	}
}