How to change the default serialization of the framework to my own JSON serialization

 @Bean("reactiveRedisTemplate")
    public ReactiveRedisTemplate<String, Object> ReactiveRedisTemplate() {
        GenericFastJsonRedisSerializer jsonRedisSerializer = new GenericFastJsonRedisSerializer();
        RedisSerializationContext<Object, Object> serializationContext = RedisSerializationContext
                .newSerializationContext().key(jsonRedisSerializer).value(jsonRedisSerializer)
                .hashKey(jsonRedisSerializer).hashValue(jsonRedisSerializer).build();
        return new ReactiveRedisTemplate(lettuceConnectionFactory(), serializationContext);
    }

but I find

org.springframework.session.data.redis.config.annotation.web.server.RedisWebSessionConfiguration 
have a private method：
private ReactiveRedisTemplate<String, Object> createReactiveRedisTemplate() {
		RedisSerializer<String> keySerializer = new StringRedisSerializer();
		RedisSerializer<Object> valueSerializer = new JdkSerializationRedisSerializer(
				this.classLoader);
		RedisSerializationContext<String, Object> serializationContext = RedisSerializationContext
				.<String, Object>newSerializationContext(valueSerializer)
				.key(keySerializer).hashKey(keySerializer).build();
		return new ReactiveRedisTemplate<>(this.redisConnectionFactory,
				serializationContext);
	}

，
My configuration does not work at all.

[vpavic]

OK, so as suspected, you’re using Spring Session 2.0.x (i.e. Apple) where we don’t have a first-class support for supplying a custom serialization mechanism.

You have two options; either update to Spring Session 2.1.x (i.e. Bean) - note that we’ve just release Bean-RELEASE yesterday; if you cannot upgrade, you need to manually register ReactiveRedisOperationsSessionRepository and configure it with desired ReactiveRedisTemplate. For example:

@EnableRedisWebSession
public class SessionConfiguration {

    @Bean
    public ReactiveRedisOperationsSessionRepository sessionRepository() {
        // either configure reactiveRedisTemplate for Spring Session here or inject it
        // ...
        ReactiveRedisOperationsSessionRepository sessionRepository =
            new ReactiveRedisOperationsSessionRepository(reactiveRedisTemplate);
    }

}

When you upgrade the Spring Session 2.1.x (i.e. Bean) you will simply replace the custom ReactiveRedisOperationsSessionRepository bean declaration with the RedisSerializer<Object> named springSessionDefaultRedisSerializer that will be automatically picked up:

@Bean
public RedisSerializer<Object> springSessionDefaultRedisSerializer() {
    // return you Redis serializer implementation
}

Does this help?

[vpavic]

Thanks for the follow up and kind words @masterchengsheng. Closing this as answered.