code: public static byte[] AesEncryptToBytes(byte[] content,byte[] encryptKey) throws Exception {
  		KeyGenerator kgen = KeyGenerator.getInstance("AES");
  		SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
  		secureRandom.setSeed(encryptKey);
  		kgen.init(128,secureRandom);
  		Cipher cipher = Cipher.getInstance("AES");
  		cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES"));
  		return cipher.doFinal(content);
  	}
docs: AES加密
  @param content 待加密的内容
  @param encryptKey 加密密钥
  @return 加密后的byte[]
  @throws Exception