我用 java aes 加密出来的密文和 ruby 的不一样，求大神指教 java 代码

/** 
  * 加密 
  *  
  * @param content 需要加密的内容 
  * @param password  加密密码 
  * @return 
  */  
 public static byte[] encrypt(String content, String password) {  
         try {             
                 KeyGenerator kgen = KeyGenerator.getInstance("AES");  
                 kgen.init(128, new SecureRandom(password.getBytes()));  
                 SecretKey secretKey = kgen.generateKey();  
                 byte[] enCodeFormat = secretKey.getEncoded();  
                 SecretKeySpec key = new SecretKeySpec(enCodeFormat, "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 (InvalidKeyException e) {  
                 e.printStackTrace();  
         } catch (UnsupportedEncodingException e) {  
                 e.printStackTrace();  
         } catch (IllegalBlockSizeException e) {  
                 e.printStackTrace();  
         } catch (BadPaddingException e) {  
                 e.printStackTrace();  
         }  
         return null;  
 }  

ruby 代码

def self.aes128_encrypt(password,content)
  aes = OpenSSL::Cipher.new('AES-128-CBC')
  aes.encrypt
  aes.key = password
  (aes.update(content) + aes.final).unpack('H*').join
end

两个加密出来的数据不一样，求指教