Springsession redis修改默认的序列化方法是什么

一、配置Spring-session-redis 的关键配置如下：

二、查看 RedisHttpSessionConfiguration 源代码如下：

	@Bean
	public RedisTemplate sessionRedisTemplate(
			RedisConnectionFactory connectionFactory) {
		RedisTemplate template = new RedisTemplate();
		template.setKeySerializer(new StringRedisSerializer());
		template.setHashKeySerializer(new StringRedisSerializer());
		if (this.defaultRedisSerializer != null) {
			template.setDefaultSerializer(this.defaultRedisSerializer);
		}
		template.setConnectionFactory(connectionFactory);
		return template;
	}

	@Bean
	public RedisOperationsSessionRepository sessionRepository(
			@Qualifier("sessionRedisTemplate") RedisOperations sessionRedisTemplate,
			ApplicationEventPublisher applicationEventPublisher) {
		RedisOperationsSessionRepository sessionRepository = new RedisOperationsSessionRepository(
				sessionRedisTemplate);
		sessionRepository.setApplicationEventPublisher(applicationEventPublisher);
		sessionRepository
				.setDefaultMaxInactiveInterval(this.maxInactiveIntervalInSeconds);
		if (this.defaultRedisSerializer != null) {
			sessionRepository.setDefaultSerializer(this.defaultRedisSerializer);
		}

		String redisNamespace = getRedisNamespace();
		if (StringUtils.hasText(redisNamespace)) {
			sessionRepository.setRedisKeyNamespace(redisNamespace);
		}

		sessionRepository.setRedisFlushMode(this.redisFlushMode);
		return sessionRepository;
	}

创建redistemplate时，指定的默认序列化是：stringredisserializer，当 defaultredisserializer != null 时，重新指定了序列化方法。以下是 defaultredisserializer 的初始化代码：

	@Autowired(required = false)
	@Qualifier("springSessionDefaultRedisSerializer")
	public void setDefaultRedisSerializer(
			RedisSerializer