标签：exists autowire bool exp component redis turn cti vat
@Component
public class RedisService {
@Autowired
private RedisTemplate<String, String> redisTemplate;
/**
* 默认过期时长，单位：秒
*/
public static final long DEFAULT_EXPIRE = 60 * 60 * 24;
/**
* 不设置过期时长
*/
public static final long NOT_EXPIRE = -1;
public boolean existsKey(String key) {
return redisTemplate.hasKey(key);
}
/**
* 重名名key，如果newKey已经存在，则newKey的原值被覆盖
*
* @param oldKey
* @param newKey
*/
public void renameKey(String oldKey, String newKey) {
redisTemplate.rename(oldKey, newKey);
}
/**
* newKey不存在时才重命名
*
* @param oldKey
* @param newKey
* @return 修改成功返回true
*/
public boolean renameKeyNotExist(String oldKey, String newKey) {
return redisTemplate.renameIfAbsent(oldKey, newKey);
}
/**
* 删除key
*
* @param key
*/
public void deleteKey(String key) {
redisTemplate.delete(key);
}
/**
* 删除多个key
*
* @param keys
*/
public void deleteKey(String... keys) {
Set<String> kSet = Stream.of(keys).map(k -> k).collect(Collectors.toSet());
redisTemplate.delete(kSet);
}
/**
* 删除Key的集合
*
* @param keys
*/
public void deleteKey(Collection<String> keys) {
Set<String> kSet = keys.stream().map(k -> k).collect(Collectors.toSet());
redisTemplate.delete(kSet);
}
/**
* 设置key的生命周期
*
* @param key
* @param time
* @param timeUnit
*/
public void expireKey(String key, long time, TimeUnit timeUnit) {
redisTemplate.expire(key, time, timeUnit);
}
/**
* 指定key在指定的日期过期
*
* @param key
* @param date
*/
public void expireKeyAt(String key, Date date) {
redisTemplate.expireAt(key, date);
}
/**
* 查询key的生命周期
*
* @param key
* @param timeUnit
* @return
*/
public long getKeyExpire(String key, TimeUnit timeUnit) {
return redisTemplate.getExpire(key, timeUnit);
}
/**
* 将key设置为永久有效
*
* @param key
*/
public void persistKey(String key) {
redisTemplate.persist(key);
}
标签：exists autowire bool exp component redis turn cti vat
原文地址：https://blog.51cto.com/11623741/2484404
