@Configuration
public class RedisConfig {

    @Resource
    private RedisTemplate redisTemplate;

    public RedisTemplate setDataBase(int num) {
        LettuceConnectionFactory connectionFactory = (LettuceConnectionFactory) redisTemplate.getConnectionFactory();
        if (connectionFactory != null && num != connectionFactory.getDatabase()) {
            connectionFactory.setDatabase(num);
            this.redisTemplate.setConnectionFactory(connectionFactory);
            connectionFactory.resetConnection();
            connectionFactory.afterPropertiesSet();
        }
        return redisTemplate;
    }
    /**
     * 序列化注入spring容器的RedisTemplate
     *
     * @return
     */
    @Bean
    public RedisTemplate<Serializable, Object> getRedisTemplate() {
        Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper mapper = new ObjectMapper();
        mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
//        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        serializer.setObjectMapper(mapper);
        //使用StringRedisSerializer来序列化和反序列化redis的key值
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(serializer);
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new StringRedisSerializer());
        redisTemplate.afterPropertiesSet();
//        redisTemplate.setEnableTransactionSupport(true);
        return redisTemplate;
    }

}