引入redis

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

将redis作为缓存

spring.redis.host=127.0.0.1
spring.redis.password=*****
spring.cache.type=redis
spring.cache.redis.cache-null-values=false

spring:
  redis:
    host: 127.0.0.1
    password: 123456
  cache:
    type: redis
    redis:
      cache-null-values: false

为要存入到redis中的类进行配置

@Configuration
public class RedisConfig {

    @Bean
    public RedisTemplate<Object, UserPO> personRedisTemplate(
            RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
        RedisTemplate<Object, UserPO> template = new RedisTemplate<Object, UserPO>();
        template.setConnectionFactory(redisConnectionFactory);
        Jackson2JsonRedisSerializer<UserPO> serializer = new Jackson2JsonRedisSerializer<UserPO>(UserPO.class);
        template.setDefaultSerializer(serializer);
        return template;
    }

}

redis中几个常用的代码

@Autowired
private RedisTemplate<Object, UserPO> redisTemplate;


//将对象以json格式存入redis，并设置过期时间
redisTemplate.opsForValue().set("k",person, Duration.ofHours(23L));

//获取redis中键为“K”的值
redisTemplate.opsForValue().get("k");

//删除redis中键为"k"的键值对
redisTemplate.delete("k");

//重置redis中键为"k"的键值对的过期时间
redisTemplate.expire("k",30L,TimeUnit.MINUTES);

token

//生成令牌
String Token = UUID.randomUUID()+"";

//从HTTP请求中获取Token,存在与请求的headler中
String Token = request.getHeader("Token");

//将Token作为键存入redis，并设置过期时间
redisTemplate.opsForValue().set(Token,对象, Duration.ofHours(23L));