RedisPool操作Redis，工具类实例
packagecom.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>
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(
" 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,> 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 staticboolean 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
}
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