Redis数据库在Spring Boot中的应用操作

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

spring:  
  redis:  
    host: localhost(已经配置好Redis的主机的IP)
    password: (如果没有密码可以删除这一行)
    port: 6379  
    database: 0 (要操作哪一个数据库，默认为0)

@Slf4j  
@Configuration  
public class RedisConfigration {  
    @Bean  
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){  
        log.info("创建Redis模板对象...");  
        RedisTemplate redisTemplate = new RedisTemplate();  
        //设置Redis连接工厂对象  
        redisTemplate.setConnectionFactory(redisConnectionFactory);  
        //设置Redis的key的序列化器  
        redisTemplate.setKeySerializer(new StringRedisSerializer());  
        return redisTemplate;  
    }  
}

//获取操作每种类型的对象
public void getRedisOperations(){  
  
    ValueOperations valueOperations = redisTemplate.opsForValue();  
    HashOperations hashOperations = redisTemplate.opsForHash();  
    ListOperations listOperations = redisTemplate.opsForList();  
    SetOperations setOperations = redisTemplate.opsForSet();  
    ZSetOperations zSetOperations = redisTemplate.opsForZSet();  
  
}

// 键操作命令
redisTemplate.keys(pattern);                 // KEYS pattern - 查找所有符合模式的 key
redisTemplate.hasKey(key);                   // EXISTS key - 检查 key 是否存在
redisTemplate.type(key);                     // TYPE key - 返回 key 储存值的类型
redisTemplate.delete(key);                   // DEL key - 删除指定的 key
redisTemplate.expire(key, timeout, timeUnit); // EXPIRE key seconds - 设置过期时间
redisTemplate.getExpire(key);                // TTL key - 获取剩余生存时间

// 字符串类型命令
redisTemplate.opsForValue().set(key, value);  // SET key value
redisTemplate.opsForValue().get(key);         // GET key
redisTemplate.opsForValue().set(key, value, timeout, timeUnit); // SETEX key seconds value
redisTemplate.opsForValue().setIfAbsent(key, value); // SETNX key value

// 哈希类型命令
redisTemplate.opsForHash().put(key, field, value);  // HSET key field value
redisTemplate.opsForHash().get(key, field);         // HGET key field
redisTemplate.opsForHash().delete(key, field);      // HDEL key field
redisTemplate.opsForHash().keys(key);               // HKEYS key
redisTemplate.opsForHash().values(key);             // HVALS key

// 列表类型命令
redisTemplate.opsForList().leftPush(key, value);     // LPUSH key value
redisTemplate.opsForList().range(key, start, end);   // LRANGE key start stop
redisTemplate.opsForList().rightPop(key);            // RPOP key
redisTemplate.opsForList().size(key);                // LLEN key

// 集合类型命令
redisTemplate.opsForSet().add(key, members);          // SADD key member
redisTemplate.opsForSet().members(key);               // SMEMBERS key
redisTemplate.opsForSet().size(key);                  // SCARD key
redisTemplate.opsForSet().intersect(key, otherKeys);  // SINTER key1 key2
redisTemplate.opsForSet().union(key, otherKeys);      // SUNION key1 key2
redisTemplate.opsForSet().remove(key, members);       // SREM key member

// 有序集合类型命令
redisTemplate.opsForZSet().add(key, member, score);   // ZADD key score member
redisTemplate.opsForZSet().range(key, start, end);    // ZRANGE key start stop
redisTemplate.opsForZSet().incrementScore(key, member, delta); // ZINCRBY key increment member
redisTemplate.opsForZSet().remove(key, members);      // ZREM key member

@GetMapping("/list")  
@ApiOperation("根据分类id查询套餐")  
@Cacheable(value = "setmealCache", key = "#categoryId")  
public Result<List<Setmeal>> list(Long categoryId) {  
    Setmeal setmeal = new Setmeal();  
    setmeal.setCategoryId(categoryId);  
    setmeal.setStatus(StatusConstant.ENABLE);  
  
    List<Setmeal> list = setmealService.list(setmeal);  
    return Result.success(list);  
}