AES为对称加密，即加密解密用同一个密钥。

AES加密

/**
     * AES加密
     *
     * @param content  需要加密的内容
     * @param password 加密密钥
     * @return
     */
    public static byte[] AESencrypt(String content, String password) {
        try {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(128, new SecureRandom(password.getBytes()));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFromat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFromat, "AES");
            Cipher cipher = Cipher.getInstance("AES");//创建密码器
            byte[] byteContent = content.getBytes("utf-8");
            cipher.init(Cipher.ENCRYPT_MODE, key);//初始化
            byte[] result = cipher.doFinal(byteContent);
            return result;//加密
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return null;
    }

AES解密

/**
     * AES解密
     *
     * @param content  需要解密的内容
     * @param password 解密密钥
     * @return
     */
    public static byte[] AESdecrypt(byte[] content, String password) {
        try {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(128, new SecureRandom(password.getBytes()));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFromat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFromat, "AES");
            Cipher cipher = Cipher.getInstance("AES");//创建密码器
            cipher.init(Cipher.DECRYPT_MODE, key);//初始化
//            byte[] byteContent = content.getBytes("utf-8");
            byte[] result = cipher.doFinal(content);
//             String s = new String(result,"utf-8");
            return result;
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return null;
    }