KeyStoreFactoryBean factory = new KeyStoreFactoryBean();
factory.setLocation(new ClassPathResource("private.jks"));
factory.setPassword("123456");
factory.setType("JCEKS");
factory.afterPropertiesSet();
KeyStore keyStore = factory.getObject();
callbackHandler.setKeyStore(keyStore);
callbackHandler.setSymmetricKeyPassword("123456");
}