RedisPool操作Redis，工具类实例
redis.properties
配置文件内容
redis.pool.maxActive=100
redis.pool.maxIdle=20
redis.pool.maxWait=3000
redis.pool.testOnBorrow=false
redis.pool.testOnReturn=false
redis.ip=127.0.0.1
redis.port=6379
redis.port1=6380
redis.password=****
package com.szreach.rcrp.redis; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.ResourceBundle; import java.util.Set; import org.apache.log4j.Logger; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; import redis.clients.jedis.JedisShardInfo; import redis.clients.jedis.ShardedJedis; import redis.clients.jedis.ShardedJedisPool; public class RedisUtil { private static final Logger log = Logger.getLogger(RedisUtil.class); private static JedisPool jedisPool = null; private static ShardedJedisPool shardedJedisPool = null; /** * 初始化Redis连接池 */ static { try { // 加载redis配置文件 ResourceBundle bundle = ResourceBundle.getBundle("redis"); if (bundle == null) { throw new IllegalArgumentException( "[redis.properties] is not found!"); } int maxActivity = Integer.valueOf(bundle .getString("redis.pool.maxActive")); int maxIdle = Integer.valueOf(bundle .getString("redis.pool.maxIdle")); long maxWait = Long.valueOf(bundle.getString("redis.pool.maxWait")); boolean testOnBorrow = Boolean.valueOf(bundle .getString("redis.pool.testOnBorrow")); boolean onreturn = Boolean.valueOf(bundle .getString("redis.pool.testOnReturn")); // 创建jedis池配置实例 JedisPoolConfig config = new JedisPoolConfig(); // 设置池配置项值 config.setMaxActive(maxActivity); config.setMaxIdle(maxIdle); //最大空闲连接数 config.setMaxWait(maxWait); config.setTestOnBorrow(testOnBorrow); config.setTestOnReturn(onreturn); jedisPool = new JedisPool(config, bundle.getString("redis.ip"), Integer.valueOf(bundle.getString("redis.port")), 10000, bundle.getString("redis.password")); // slave链接 List<JedisShardInfo> shards = new ArrayList<JedisShardInfo>(); shards.add(new JedisShardInfo(bundle.getString("redis.ip"), Integer .valueOf(bundle.getString("redis.port1")))); shardedJedisPool = new ShardedJedisPool(config, shards); log.info("初始化Redis连接池success"); } catch (Exception e) { log.error("初始化Redis连接池 出错！", e); } } /** * 获取Jedis实例 * * @return */ public synchronized static Jedis getJedis() { try { if (jedisPool != null) { Jedis resource = jedisPool.getResource(); return resource; } else { return null; } } catch (Exception e) { log.error("Redis缓存获取Jedis实例 出错！", e); return null; } } /** * 获取shardedJedis实例 * * @return */ public static ShardedJedis getShardedJedis() { try { if (shardedJedisPool != null) { ShardedJedis resource = shardedJedisPool.getResource(); return resource; } else { return null; } } catch (Exception e) { log.error("Redis缓存获取shardedJedis实例 出错！", e); return null; } } /** * 释放jedis资源 * * @param jedis */ public static void returnResource(final Jedis jedis) { if (jedis != null) { jedisPool.returnResource(jedis); } } /** * 释放shardedJedis资源 * * @param jedis */ public static void returnResource(final ShardedJedis shardedJedis) { if (shardedJedis != null) { shardedJedisPool.returnResource(shardedJedis); } } /** * 向缓存中设置字符串内容 * * @param key * key * @param value * value * @return * @throws Exception */ public static boolean set(String key, String value) { Jedis jedis = null; try { jedis = getJedis(); if(jedis != null){ jedis.set(key, value); } return true; } catch (Exception e) { log.error("Redis缓存设置key值 出错！", e); return false; } finally { returnResource(jedis); } } /** * 判断key是否存在 */ public static boolean exists(String key){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis == null) { return false; } else { return jedis.exists(key); } } catch (Exception e) { log.error("Redis缓存判断key是否存在 出错！", e); return false; } finally { returnResource(jedis); } } /** * 删除缓存中的对象，根据key * @param key * @return */ public static boolean del(String key) { Jedis jedis = null; try { jedis = getJedis(); jedis.del(key); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } //*******************key-value****************start /** * 向缓存中设置对象 * * @param key * @param value * @return */ public static boolean set(String key, Object value) { Jedis jedis = null; try { String objectJson = JSONObject.fromObject(value).toString(); jedis = getJedis(); if (jedis != null) { jedis.set(key, objectJson); } return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * 根据key 获取内容 * * @param key * @return */ public static Object get(String key) { ShardedJedis jedis = null; try { jedis = shardedJedisPool.getResource(); Object value = jedis.get(key); return value; } catch (Exception e) { e.printStackTrace(); return false; } finally { shardedJedisPool.returnResource(jedis); } } /** * 根据key 获取对象 * * @param key * @return */ @SuppressWarnings("unchecked") public static <T> T get(String key, Class<T> clazz) { ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { return (T) JSONObject.toBean(JSONObject.fromObject(jedis.get(key)), clazz); } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } //*******************key-value****************end //*************** 操作list****************start /** * 向缓存中设置对象 * @param key * @param list * T string calss * @return */ public static <T> boolean setList(String key,List<T> list){ Jedis jedis = null; try { jedis = getJedis(); if (jedis != null) { for (T vz : list) { if (vz instanceof String) { jedis.lpush(key, (String) vz); } else { String objectJson = JSONObject.fromObject(vz).toString(); jedis.lpush(key, objectJson); } } return true; } else { return false; } } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } @SuppressWarnings("unchecked") public static <T> List<T> getListEntity(String key,Class<T> entityClass){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { List<String> valueJson = jedis.lrange(key, 0, -1); JSONArray json = new JSONArray(); json.addAll(valueJson); JSONArray jsonArray = JSONArray.fromObject(json.toString()); return (List<T>) JSONArray.toCollection(jsonArray, entityClass); } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } public static List<String> getListString(String key){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { return jedis.lrange(key, 0, -1); } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } //*************** 操作list****************end //*************** 操作map****************start public static <K,V> boolean setMap(String key,Map<String,V> map){ Jedis jedis = null; try { jedis = getJedis(); if (jedis != null) { Set<Map.Entry<String, V>> entry = map.entrySet(); for (Iterator<Map.Entry<String, V>> ite = entry.iterator(); ite.hasNext();) { Map.Entry<String, V> kv = ite.next(); if (kv.getValue() instanceof String) { jedis.hset(key, kv.getKey(), (String) kv.getValue()); }else if (kv.getValue() instanceof List) { jedis.hset(key, kv.getKey(), JSONArray.fromObject(kv.getValue()).toString()); } else { jedis.hset(key, kv.getKey(), JSONObject.fromObject(kv.getValue()).toString()); } } return true; } else { return false; } } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } public static boolean setMapKey(String key,String mapKey,Object value){ Jedis jedis = null; try { jedis = getJedis(); if (jedis != null) { if (value instanceof String) { jedis.hset(key, mapKey, String.valueOf(value)); } else if (value instanceof List) { jedis.hset(key, mapKey, JSONArray.fromObject(value).toString()); } else { jedis.hset(key, mapKey, JSONObject.fromObject(value).toString()); } return true; } else { return false; } } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * seconds key和value 保存的有效时间（单位：秒） * @return */ public static boolean setMapKeyExpire(String key,String mapKey,Object value, int seconds){ Jedis jedis = null; try { jedis = getJedis(); if (jedis != null) { if (value instanceof String) { jedis.hset(key, mapKey, String.valueOf(value)); } else if (value instanceof List) { jedis.hset(key, mapKey, JSONArray.fromObject(value).toString()); } else { jedis.hset(key, mapKey, JSONObject.fromObject(value).toString()); } jedis.expire(key, seconds); return true; } else { return false; } } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } @SuppressWarnings("unchecked") public static <K,V> Map<String,V> getMap(String key){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { Map<String, V> map = (Map<String, V>) jedis.hgetAll(key); return map; } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } @SuppressWarnings("unchecked") public static <K,V> Map<String,V> getMapEntityClass(String key,Class<V> clazz){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { Map<String, V> map = (Map<String, V>) jedis.hgetAll(key); Set<Map.Entry<String, V>> entry = map.entrySet(); for (Iterator<Map.Entry<String, V>> ite = entry.iterator(); ite.hasNext();) { Map.Entry<String, V> kv = ite.next(); map.put(kv.getKey(), (V) JSONObject.toBean(JSONObject.fromObject(kv.getValue()), clazz)); } return map; } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } @SuppressWarnings("unchecked") public static <K,V> Map<String,List<V>> getMapList(String key,Class<V> clazz){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { Map<String, V> map = (Map<String, V>) jedis.hgetAll(key); Set<Map.Entry<String, V>> entry = map.entrySet(); for (Iterator<Map.Entry<String, V>> ite = entry.iterator(); ite.hasNext();) { Map.Entry<String, V> kv = ite.next(); JSONArray jsonArray = JSONArray.fromObject(kv.getValue()); map.put(kv.getKey(), (V) JSONArray.toCollection(jsonArray, clazz)); } return (Map<String, List<V>>) map; } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } @SuppressWarnings("unchecked") public static <T> List<T> getMapKeyListEntity(String key,String mapKey, Class<T> entityClass){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if (jedis != null) { String valueJson = jedis.hget(key, mapKey); JSONArray jsonArray = JSONArray.fromObject(valueJson); return (List<T>) JSONArray.toCollection(jsonArray, entityClass); } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } @SuppressWarnings("unchecked") public static <T> T getMapKeyEntity(String key,String mapKey, Class<T> entityClass){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if(jedis != null){ String valueJson=jedis.hget(key, mapKey); return (T) JSONObject.toBean(JSONObject.fromObject(valueJson), entityClass); }else{return null;} } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } public static Object getMapKey(String key,String mapKey){ ShardedJedis jedis = null; try { jedis = getShardedJedis(); if(jedis != null){ return jedis.hget(key, mapKey); }else{return null;} } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } public static boolean delMapKey(String key,String mapKey){ Jedis jedis = null; try { jedis = getJedis(); jedis.hdel(key, mapKey); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } public static boolean hexists(String key,String mapKey){ ShardedJedis jedis = null; try { jedis = shardedJedisPool.getResource(); return jedis.hexists(key,mapKey); } catch (Exception e) { e.printStackTrace(); return false; } finally { shardedJedisPool.returnResource(jedis); } } //*************** 操作map****************end //***************计数器应用INCR,DECR****************begin //Redis的命令都是原子性的，你可以轻松地利用INCR，DECR命令来构建计数器系统 /** * incr(key)：名称为key的string增1操作 */ public static boolean incr(String key){ Jedis jedis = null; try { jedis = getJedis(); jedis.incr(key); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * incrby(key, integer)：名称为key的string增加integer */ public static boolean incrBy(String key, int value){ Jedis jedis = null; try { jedis = getJedis(); jedis.incrBy(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * decr(key)：名称为key的string减1操作 */ public static boolean decr(String key){ Jedis jedis = null; try { jedis = getJedis(); jedis.decr(key); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * decrby(key, integer)：名称为key的string减少integer */ public static boolean decrBy(String key, int value){ Jedis jedis = null; try { jedis = getJedis(); jedis.decrBy(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } //***************计数器应用INCR,DECR****************end //***************使用sorted set(zset)甚至可以构建有优先级的队列系统***************begin /** * 向名称为key的zset中添加元素member，score用于排序。 * 如果该元素已经存在，则根据score更新该元素的顺序 */ public static boolean zadd(String key, double score, String member){ Jedis jedis = null; try { jedis = getJedis(); jedis.zadd(key, score, member); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * 删除名称为key的zset中的元素member */ public static boolean zrem(String key, String... members){ Jedis jedis = null; try { jedis = getJedis(); jedis.zrem(key, members); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * 返回集合中score在给定区间的元素 */ public static Set<String> zrangeByScore(String key, double min, double max){ ShardedJedis jedis = null; try { jedis = shardedJedisPool.getResource(); return jedis.zrangeByScore(key, min, max); } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } //***************使用sorted set(zset)甚至可以构建有优先级的队列系统***************end //***************sorted set 处理***************************************begin //zset 处理 public static boolean zaddObject(String key, double score, Object value){ Jedis jedis = null; try { jedis = getJedis(); String objectJson = JSONObject.fromObject(value).toString(); jedis.zadd(key, score, objectJson); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * score值递减(从大到小)次序排列。 * @param key * @param max score * @param min score * @param entityClass * @return */ @SuppressWarnings("unchecked") public static <T> List<T> zrevrangeByScore(String key,double max,double min, Class<T> entityClass){ ShardedJedis jedis = null; try { jedis =shardedJedisPool.getResource(); Set<String> set=jedis.zrevrangeByScore(key, max, min); List<T> list=new ArrayList<T>(); for (String str : set) { list.add((T) JSONObject.toBean(JSONObject.fromObject(str), entityClass)); } return list; } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } /** * score值递减(从大到小)次序排列。 * @param key * @param max score * @param min score * @param offset count (类似mysql的 LIMIT) * @param entityClass * @return */ @SuppressWarnings("unchecked") public static <T> List<T> zrevrangeByScore(String key,double max,double min, int offset, int count,Class<T> entityClass){ ShardedJedis jedis = null; try { jedis =shardedJedisPool.getResource(); Set<String> set=jedis.zrevrangeByScore(key, max, min,offset,count); List<T> list=new ArrayList<T>(); for (String str : set) { list.add((T) JSONObject.toBean(JSONObject.fromObject(str), entityClass)); } return list; } catch (Exception e) { e.printStackTrace(); return null; } finally { returnResource(jedis); } } //得到总记录数 public static long zcard(String key){ ShardedJedis jedis = null; try { jedis =shardedJedisPool.getResource(); return jedis.zcard(key); } catch (Exception e) { e.printStackTrace(); return 0; } finally { returnResource(jedis); } } //删除 元素 public static boolean zremObject(String key, Object value){ Jedis jedis = null; try { jedis = getJedis(); String objectJson = JSONObject.fromObject(value).toString(); jedis.zrem(key, objectJson); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } //统计zset集合中score某个范围内（1-5），元素的个数 public static long zcount(String key,double min, double max){ ShardedJedis jedis = null; try { jedis =shardedJedisPool.getResource(); return jedis.zcount(key,min,max); } catch (Exception e) { e.printStackTrace(); return 0; } finally { returnResource(jedis); } } //查看zset集合中元素的score public static double zscore(String key,Object value){ ShardedJedis jedis = null; try { jedis =shardedJedisPool.getResource(); String objectJson = JSONObject.fromObject(value).toString(); return jedis.zscore(key,objectJson); } catch (Exception e) { e.printStackTrace(); return 0; } finally { returnResource(jedis); } } //**************sorted set******************************************end //***********************Redis Set集合操作**************************begin /** * sadd:向名称为Key的set中添加元素,同一集合中不能出现相同的元素值。（用法：sadd set集合名称 元素值） * @param key * @param value * @return */ public static boolean sadd(String key, String value) { Jedis jedis = null; try { jedis = getJedis(); jedis.sadd(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * srem:删除名称为key的set中的元素。（用法：srem set集合名称 要删除的元素值） * * @param key * @param value * @return */ public static boolean srem(String key, String value) { Jedis jedis = null; try { jedis = getJedis(); jedis.srem(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * sdiff:返回所有给定key与第一个key的差集。（用法：sdiff set集合1 set集合2） * * @param key1 * @param key2 * @return */ public static Set<String> sdiff(String key1, String key2) { Jedis jedis = null; Set<String> diffList = null; try { jedis = getJedis(); diffList = jedis.sdiff(key1, key2); } catch (Exception e) { e.printStackTrace(); } finally { returnResource(jedis); } return diffList; } /** * sismember:判断某个值是否是集合的元素。（用法：sismember 集合1 指定的元素值） * * @param key * @param value * @return */ public static boolean sismember(String key, String value) { ShardedJedis jedis = null; try { jedis = shardedJedisPool.getResource(); return jedis.sismember(key, value); } catch (Exception e) { e.printStackTrace(); return false; } finally { returnResource(jedis); } } /** * smembers(key) ：返回名称为key的set的所有元素 * * @param key * @return */ public static Set<String> smembers(String key) { Jedis jedis = null; Set<String> list = null; try { jedis = getJedis(); list = jedis.smembers(key); } catch (Exception e) { e.printStackTrace(); } finally { returnResource(jedis); } return list; } //***********************Redis Set集合操作****************************end }
