redisson常用api

        redisson提供了很多对象类型的api，下面介绍下一些常用的对象api。 

RBucket

        可操作任何对象的api，前提是要确定好泛型，方法比较少。大小限制为512Mb。

RBucket<AnyObject> bucket = redisson.getBucket("anyObject");bucket.set(new AnyObject(1));
AnyObject obj = bucket.get();bucket.trySet(new AnyObject(3));
bucket.compareAndSet(new AnyObject(4), new AnyObject(5));
bucket.getAndSet(new AnyObject(6));

RMap

        专门操作map的对象，实现了ConcurrentMap接口，并且put、set操作直接作用于redis。

RMap<String, SomeObject> map = redisson.getMap("anyMap");
SomeObject prevObject = map.put("123", new SomeObject());
SomeObject currentObject = map.putIfAbsent("323", new SomeObject());
SomeObject obj = map.remove("123");// use fast* methods when previous value is not required
map.fastPut("a", new SomeObject());
map.fastPutIfAbsent("d", new SomeObject());
map.fastRemove("b");RFuture<SomeObject> putAsyncFuture = map.putAsync("321");
RFuture<Void> fastPutAsyncFuture = map.fastPutAsync("321");map.fastPutAsync("321", new SomeObject());
map.fastRemoveAsync("321");

RList

        专门操作list的对象，实现了java.util.List， add、set等方法直接作用于redis。

RList<SomeObject> list = redisson.getList("anyList");
list.add(new SomeObject());
list.get(0);
list.remove(new SomeObject());

自定义工具类代码 

package com.springboot.demo.base.utils;import java.time.Duration;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import org.apache.commons.lang3.ObjectUtils;
import org.redisson.api.RBucket;
import org.redisson.api.RList;
import org.redisson.api.RLock;
import org.redisson.api.RMap;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;/*** @description: redisson工具类 <br>* @author: 小花卷的Dad <br>* @create: 2023/8/24 <br>*/
@Component
public class RedissonUtil {private static RedissonClient redissonClient;/*** 锁默认释放时间*/private static final long default_lease_time = 5L;@Autowiredpublic void setRedissonClient(RedissonClient redissonClient) {RedissonUtil.redissonClient = redissonClient;}/*** key是否存在* @param key* @return*/public static boolean isExists(String key){return redissonClient.getBucket(key).isExists();}/*** 获取生命周期* @param key* @return*/public static long getExpireTime(String key){return redissonClient.getBucket(key).remainTimeToLive();}/*** 设置生命周期* @param key* @param time(毫秒)* @return*/public static boolean setExpireTime(String key, Long expire){return redissonClient.getBucket(key).expire(Duration.ofMillis(expire));}public static boolean delete(String key){if(!isExists(key)){return true;}return redissonClient.getBucket(key).delete();}/*** 保存字符串* @param key* @param value*/public static void setStr(String key, String value){RBucket<String> rBucket = redissonClient.getBucket(key);rBucket.set(value);}/*** 保存字符串* @param key* @param value* @param expire*/public static void setStr(String key, String value, Long expire){RBucket<String> rBucket = redissonClient.getBucket(key);rBucket.set(value, Duration.ofMillis(expire));}/*** 查询字符串* @param key* @return*/public static String getStr(String key){if(isExists(key)){return null;}RBucket<String> rBucket = redissonClient.getBucket(key);return rBucket.get();}/*** 保存对象* @param key* @param value* @param <T>*/public static <T> void setObject(String key, T value){RBucket<T> rBucket = redissonClient.getBucket(key);rBucket.set(value);}/*** 保存对象* @param key* @param value* @param expire* @param <T>*/public static <T> void setObject(String key, T value, Long expire){RBucket<T> rBucket = redissonClient.getBucket(key);rBucket.set(value, Duration.ofMillis(expire));}/*** 查询对象* @param key* @return*/public static <T> T getObject(String key){RBucket<T> rBucket = redissonClient.getBucket(key);return rBucket.get();}/*** map.get* @param key* @param mapKey* @param <T>* @return*/public static <T> T mapGet(String key, String mapKey){if(!isExists(key)){return null;}Map<String, T> rMap = redissonClient.getMap(key);return rMap.get(mapKey);}/*** 查询map* @param key* @param <T>* @return*/public static <T> Map<String, T> mapGetAll(String key){RMap<String, T> rMap = redissonClient.getMap(key);return rMap.readAllMap();}/*** map.put* @param key* @param mapKey* @param mapValue* @param <T>*/public static <T> void mapPut(String key, String mapKey,T mapValue){RMap<String, T> rMap = redissonClient.getMap(key);rMap.put(mapKey, mapValue);}/*** map.putAll* @param key* @param map* @param <T>*/public static <T> void mapPutAll(String key, Map<String, T> map){RMap<String, T> rMap = redissonClient.getMap(key);rMap.putAll(map);}/*** map.contains* @param key* @param mapKey* @return*/public static boolean mapContains(String key, String mapKey){if(!isExists(key)){return false;}Map<String, Object> rMap = redissonClient.getMap(key);return rMap.containsKey(mapKey);}/*** list.get* @param key* @param listIndex* @param <T>* @return*/public static <T> T listGet(String key, int listIndex){if(!isExists(key)){return null;}if(listIndex < 0){return null;}RList<T> rList = redissonClient.getList(key);if(rList.size()-1 < listIndex){return null;}return rList.get(listIndex);}/*** list.getAll* @param key* @param <T>* @return*/public static <T> List<T> listGetAll(String key){RList<T> rList = redissonClient.getList(key);return rList.readAll();}/*** list.add* @param key* @param addValue* @param <T>*/public static <T> void listAdd(String key, T addValue){RList<T> rList = redissonClient.getList(key);rList.add(addValue);}/*** list.add* @param key* @param addList* @param <T>*/public static <T> void listAddAll(String key, List<T> addList){RList<T> rList = redissonClient.getList(key);rList.addAll(addList);}/*** list.set* @param key* @param listIndex* @param setValue* @param <T>*/public static <T> void listSet(String key, int listIndex, T setValue){RList<T> rList = redissonClient.getList(key);if(rList.size()-1 < listIndex){return;}rList.set(listIndex, setValue);}
}