重新整理下

pom依赖

 <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-data-redis</artifactId>
        </dependency>

   <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

配置类

@Slf4j
@Configuration

//开启redisSession 并且设置session存活时间
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 600)   
public class RedisConfig {


    /**
     *
     * 解决hashmap显示问题
     * @return
     */
    @Bean
    public RedisSerializer<Object> springSessionDefaultRedisSerializer() {
        return new Jackson2JsonRedisSerializer<>(Object.class);
    }
    @Primary
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
        redisTemplate.setConnectionFactory(connectionFactory);
        redisTemplate.setKeySerializer( new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new StringRedisSerializer());
        redisTemplate.afterPropertiesSet();

        return redisTemplate;

    }




}

Redis Session 存储结构

spring:session:expirations:1431527520000: set结构  row :1    value："expires:6c77cd4f-1f81-4949-9058-b2adbf49572e"

spring:session:sessions:6c77cd4f-1f81-4949-9058-b2adbf49572e:hash结构

key:lastAccessedTime  value:1533534325224   (最后一次访问时间)
key:creationTime           value:1533534325224   (创建时间)
key:maxInactiveInterval value:600                      （最大存活时间）
key:sessionAttr:03539250-edd5-4321-9b82-938796c883d1admin  value : "User{id=null, username='admin', password='null'}" (session.setAttribute设置的keyvalue)

spring:session:sessions:expires:6c77cd4f-1f81-4949-9058-b2adbf49572e  string结构

其中 ：

spring:session:expirations:1431527520000: 为该会话的过期时间截止到什么时候
spring:session:sessions:6c77cd4f-1f81-4949-9058-b2adbf49572e：储存一些session的信息
spring:session:sessions:expires:6c77cd4f-1f81-4949-9058-b2adbf49572e： 过期凭证