Using keytool to list secret key

Question

I used keytool to generate the secret key:

keytool -genseckey -alias mykey -keyalg AES -keysize 256 -storetype jceks -keystore mykeystore

Then, the following command will list information about mykeystore:

keytool -list -keystore mykeystore -storepass password -v -storetype jceks -alias mykey 

And the result will like it:

Alias name: mykey
Creation date: Dec 31, 2016
Entry type: SecretKeyEntry

But I want to see the key like below(I used openssl enc -aes-256-cbc -k secret -P -md sh1 ):

salt=xxxxxxxxxxx
key=EB381B48CC2D39C7A5164491129CA10486861530B02E4FD11D64433CF8388428
iv = xxxxxxxxxxxxxxxxxxxxxxxxxx

How to use keytool to see the key from keystore?