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文章目录
1、使用了jedis客户端，对redis进行了封装，包括：
1）使用了redispool获取连接；以及连接的回收；
2）常用五种数据结构的常用操作封装；
package redis.utils;
import java.util.List;
import java.util.Map;
import java.util.Set;
//import org.apache.log4j.Logger;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.SortingParams;
import redis.clients.jedis.BinaryClient.LIST_POSITION;
import redis.clients.util.SafeEncoder;
/**
* @author Mr.hu
* @version crateTime：2013-10-30 下午5:41:30
* Class Explain:JedisUtil
*/
public class JedisUtil {
//private Logger log = Logger.getLogger(this.getClass());
/**缓存生存时间 */
private final int expire = 60000;
/** 操作Key的方法 */
public Keys KEYS;
/** 对存储结构为String类型的操作 */
public Strings STRINGS;
/** 对存储结构为List类型的操作 */
public Lists LISTS;
/** 对存储结构为Set类型的操作 */
public Sets SETS;
/** 对存储结构为HashMap类型的操作 */
public Hash HASH;
/** 对存储结构为Set(排序的)类型的操作 */
public SortSet SORTSET;
private static JedisPool jedisPool = null;
private JedisUtil() {
}
static {
JedisPoolConfig config = new JedisPoolConfig();
//控制一个pool可分配多少个jedis实例，通过pool.getResource()来获取；
//如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。
config.setMaxTotal(500);
//控制一个pool最多有多少个状态为idle(空闲的)的jedis实例。
config.setMaxIdle(5);
//表示当borrow(引入)一个jedis实例时，最大的等待时间，如果超过等待时间，则直接抛出JedisConnectionException；
config.setMaxWaitMillis(1000 * 100);
//在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；
config.setTestOnBorrow(true);
//redis如果设置了密码：
/*jedisPool = new JedisPool(config, JRedisPoolConfig.REDIS_IP,
JRedisPoolConfig.REDIS_PORT,
10000,JRedisPoolConfig.REDIS_PASSWORD); */
//redis未设置了密码：
jedisPool = new JedisPool(config, "127.0.0.1",6379);
}
public JedisPool getPool() {
return jedisPool;
}
/**
* 从jedis连接池中获取获取jedis对象
* @return
*/
public Jedis getJedis() {
return jedisPool.getResource();
}
private static final JedisUtil jedisUtil = new JedisUtil();
/**
* 获取JedisUtil实例
* @return
*/
public static JedisUtil getInstance() {
return jedisUtil;
}
/**
* 回收jedis(放到finally中)
* @param jedis
*/
public void returnJedis(Jedis jedis) {
if (null != jedis && null != jedisPool) {
jedisPool.returnResource(jedis);
}
}
/**
* 销毁连接(放到catch中)
* @param pool
* @param jedis
*/
public static void returnBrokenResource(Jedis jedis) {
if (null != jedis && null != jedisPool) {
jedisPool.returnResource(jedis);
}
}
/**
* 设置过期时间
* @author ruan 2013-4-11
* @param key
* @param seconds
*/
public void expire(String key, int seconds) {
if (seconds <= 0) {
return;
}
Jedis jedis = getJedis();
jedis.expire(key, seconds);
returnJedis(jedis);
}
/**
* 设置默认过期时间
* @author ruan 2013-4-11
* @param key
*/
public void expire(String key) {
expire(key, expire);
}
//*******************************************Keys*******************************************//
public class Keys {
/**
* 清空所有key
*/
public String flushAll() {
Jedis jedis = getJedis();
String stata = jedis.flushAll();
returnJedis(jedis);
return stata;
}
/**
* 更改key
* @param String oldkey
* @param String newkey
* @return 状态码
* */
public String rename(String oldkey, String newkey) {
return rename(SafeEncoder.encode(oldkey),
SafeEncoder.encode(newkey));
}
/**
* 更改key,仅当新key不存在时才执行
* @param String oldkey
* @param String newkey
* @return 状态码
* */
public long renamenx(String oldkey, String newkey) {
Jedis jedis = getJedis();
long status = jedis.renamenx(oldkey, newkey);
returnJedis(jedis);
return status;
}
/**
* 更改key
* @param String oldkey
* @param String newkey
* @return 状态码
* */
public String rename(byte[] oldkey, byte[] newkey) {
Jedis jedis = getJedis();
String status = jedis.rename(oldkey, newkey);
returnJedis(jedis);
return status;
}
/**
* 设置key的过期时间，以秒为单位
* @param String key
* @param 时间,已秒为单位
* @return 影响的记录数
* */
public long expired(String key, int seconds) {
Jedis jedis = getJedis();
long count = jedis.expire(key, seconds);
returnJedis(jedis);
return count;
}
/**
* 设置key的过期时间,它是距历元（即格林威治标准时间 1970 年 1 月 1 日的 00:00:00，格里高利历）的偏移量。
* @param String key
* @param 时间,已秒为单位
* @return 影响的记录数
* */
public long expireAt(String key, long timestamp) {
Jedis jedis = getJedis();
long count = jedis.expireAt(key, timestamp);
returnJedis(jedis);
return count;
}
/**
* 查询key的过期时间
* @param String key
* @return 以秒为单位的时间表示
* */
public long ttl(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis=getJedis();
long len = sjedis.ttl(key);
returnJedis(sjedis);
return len;
}
/**
* 取消对key过期时间的设置
* @param key
* @return 影响的记录数
* */
public long persist(String key) {
Jedis jedis = getJedis();
long count = jedis.persist(key);
returnJedis(jedis);
return count;
}
/**
* 删除keys对应的记录,可以是多个key
* @param String ... keys
* @return 删除的记录数
* */
public long del(String... keys) {
Jedis jedis = getJedis();
long count = jedis.del(keys);
returnJedis(jedis);
return count;
}
/**
* 删除keys对应的记录,可以是多个key
* @param String .. keys
* @return 删除的记录数
* */
public long del(byte[]... keys) {
Jedis jedis = getJedis();
long count = jedis.del(keys);
returnJedis(jedis);
return count;
}
/**
* 判断key是否存在
* @param String key
* @return boolean
* */
public boolean exists(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis=getJedis();
boolean exis = sjedis.exists(key);
returnJedis(sjedis);
return exis;
}
/**
* 对List,Set,SortSet进行排序,如果集合数据较大应避免使用这个方法
* @param String key
* @return List<String> 集合的全部记录
* **/
public List<String> sort(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis=getJedis();
List<String> list = sjedis.sort(key);
returnJedis(sjedis);
return list;
}
/**
* 对List,Set,SortSet进行排序或limit
* @param String key
* @param SortingParams parame 定义排序类型或limit的起止位置.
* @return List<String> 全部或部分记录
* **/
public List<String> sort(String key, SortingParams parame) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis=getJedis();
List<String> list = sjedis.sort(key, parame);
returnJedis(sjedis);
return list;
}
/**
* 返回指定key存储的类型
* @param String key
* @return String string|list|set|zset|hash
* **/
public String type(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis=getJedis();
String type = sjedis.type(key);
returnJedis(sjedis);
return type;
}
/**
* 查找所有匹配给定的模式的键
* @param String key的表达式,*表示多个，？表示一个
* */
public Set<String> keys(String pattern) {
Jedis jedis = getJedis();
Set<String> set = jedis.keys(pattern);
returnJedis(jedis);
return set;
}
}
//*******************************************Sets*******************************************//
public class Sets {
/**
* 向Set添加一条记录，如果member已存在返回0,否则返回1
* @param String key
* @param String member
* @return 操作码,0或1
* */
public long sadd(String key, String member) {
Jedis jedis = getJedis();
long s = jedis.sadd(key, member);
returnJedis(jedis);
return s;
}
public long sadd(byte[] key, byte[] member) {
Jedis jedis = getJedis();
long s = jedis.sadd(key, member);
returnJedis(jedis);
return s;
}
/**
* 获取给定key中元素个数
* @param String key
* @return 元素个数
* */
public long scard(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.scard(key);
returnJedis(sjedis);
return len;
}
/**
* 返回从第一组和所有的给定集合之间的差异的成员
* @param String ... keys
* @return 差异的成员集合
* */
public Set<String> sdiff(String... keys) {
Jedis jedis = getJedis();
Set<String> set = jedis.sdiff(keys);
returnJedis(jedis);
return set;
}
/**
* 这个命令等于sdiff,但返回的不是结果集,而是将结果集存储在新的集合中，如果目标已存在，则覆盖。
* @param String newkey 新结果集的key
* @param String ... keys 比较的集合
* @return 新集合中的记录数
* **/
public long sdiffstore(String newkey, String... keys) {
Jedis jedis = getJedis();
long s = jedis.sdiffstore(newkey, keys);
returnJedis(jedis);
return s;
}
/**
* 返回给定集合交集的成员,如果其中一个集合为不存在或为空，则返回空Set
* @param String ... keys
* @return 交集成员的集合
* **/
public Set<String> sinter(String... keys) {
Jedis jedis = getJedis();
Set<String> set = jedis.sinter(keys);
returnJedis(jedis);
return set;
}
/**
* 这个命令等于sinter,但返回的不是结果集,而是将结果集存储在新的集合中，如果目标已存在，则覆盖。
* @param String newkey 新结果集的key
* @param String ... keys 比较的集合
* @return 新集合中的记录数
* **/
public long sinterstore(String newkey, String... keys) {
Jedis jedis = getJedis();
long s = jedis.sinterstore(newkey, keys);
returnJedis(jedis);
return s;
}
/**
* 确定一个给定的值是否存在
* @param String key
* @param String member 要判断的值
* @return 存在返回1，不存在返回0
* **/
public boolean sismember(String key, String member) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
boolean s = sjedis.sismember(key, member);
returnJedis(sjedis);
return s;
}
/**
* 返回集合中的所有成员
* @param String key
* @return 成员集合
* */
public Set<String> smembers(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.smembers(key);
returnJedis(sjedis);
return set;
}
public Set<byte[]> smembers(byte[] key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<byte[]> set = sjedis.smembers(key);
returnJedis(sjedis);
return set;
}
/**
* 将成员从源集合移出放入目标集合 <br/>
* 如果源集合不存在或不包哈指定成员，不进行任何操作，返回0<br/>
* 否则该成员从源集合上删除，并添加到目标集合，如果目标集合中成员已存在，则只在源集合进行删除
* @param String srckey 源集合
* @param String dstkey 目标集合
* @param String member 源集合中的成员
* @return 状态码，1成功，0失败
* */
public long smove(String srckey, String dstkey, String member) {
Jedis jedis = getJedis();
long s = jedis.smove(srckey, dstkey, member);
returnJedis(jedis);
return s;
}
/**
* 从集合中删除成员
* @param String key
* @return 被删除的成员
* */
public String spop(String key) {
Jedis jedis = getJedis();
String s = jedis.spop(key);
returnJedis(jedis);
return s;
}
/**
* 从集合中删除指定成员
* @param String key
* @param String member 要删除的成员
* @return 状态码，成功返回1，成员不存在返回0
* */
public long srem(String key, String member) {
Jedis jedis = getJedis();
long s = jedis.srem(key, member);
returnJedis(jedis);
return s;
}
/**
* 合并多个集合并返回合并后的结果，合并后的结果集合并不保存<br/>
* @param String ... keys
* @return 合并后的结果集合
* @see sunionstore
* */
public Set<String> sunion(String... keys) {
Jedis jedis = getJedis();
Set<String> set = jedis.sunion(keys);
returnJedis(jedis);
return set;
}
/**
* 合并多个集合并将合并后的结果集保存在指定的新集合中，如果新集合已经存在则覆盖
* @param String newkey 新集合的key
* @param String ... keys 要合并的集合
* **/
public long sunionstore(String newkey, String... keys) {
Jedis jedis = getJedis();
long s = jedis.sunionstore(newkey, keys);
returnJedis(jedis);
return s;
}
}
//*******************************************SortSet*******************************************//
public class SortSet {
/**
* 向集合中增加一条记录,如果这个值已存在，这个值对应的权重将被置为新的权重
* @param String key
* @param double score 权重
* @param String member 要加入的值，
* @return 状态码 1成功，0已存在member的值
* */
public long zadd(String key, double score, String member) {
Jedis jedis = getJedis();
long s = jedis.zadd(key, score, member);
returnJedis(jedis);
return s;
}
/*public long zadd(String key, Map<Double, String> scoreMembers) {
Jedis jedis = getJedis();
long s = jedis.zadd(key, scoreMembers);
returnJedis(jedis);
return s;
}*/
/**
* 获取集合中元素的数量
* @param String key
* @return 如果返回0则集合不存在
* */
public long zcard(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.zcard(key);
returnJedis(sjedis);
return len;
}
/**
* 获取指定权重区间内集合的数量
* @param String key
* @param double min 最小排序位置
* @param double max 最大排序位置
* */
public long zcount(String key, double min, double max) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.zcount(key, min, max);
returnJedis(sjedis);
return len;
}
/**
* 获得set的长度
*
* @param key
* @return
*/
public long zlength(String key) {
long len = 0;
Set<String> set = zrange(key, 0, -1);
len = set.size();
return len;
}
/**
* 权重增加给定值，如果给定的member已存在
* @param String key
* @param double score 要增的权重
* @param String member 要插入的值
* @return 增后的权重
* */
public double zincrby(String key, double score, String member) {
Jedis jedis = getJedis();
double s = jedis.zincrby(key, score, member);
returnJedis(jedis);
return s;
}
/**
* 返回指定位置的集合元素,0为第一个元素，-1为最后一个元素
* @param String key
* @param int start 开始位置(包含)
* @param int end 结束位置(包含)
* @return Set<String>
* */
public Set<String> zrange(String key, int start, int end) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.zrange(key, start, end);
returnJedis(sjedis);
return set;
}
/**
* 返回指定权重区间的元素集合
* @param String key
* @param double min 上限权重
* @param double max 下限权重
* @return Set<String>
* */
public Set<String> zrangeByScore(String key, double min, double max) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.zrangeByScore(key, min, max);
returnJedis(sjedis);
return set;
}
/**
* 获取指定值在集合中的位置，集合排序从低到高
* @see zrevrank
* @param String key
* @param String member
* @return long 位置
* */
public long zrank(String key, String member) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long index = sjedis.zrank(key, member);
returnJedis(sjedis);
return index;
}
/**
* 获取指定值在集合中的位置，集合排序从高到低
* @see zrank
* @param String key
* @param String member
* @return long 位置
* */
public long zrevrank(String key, String member) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long index = sjedis.zrevrank(key, member);
returnJedis(sjedis);
return index;
}
/**
* 从集合中删除成员
* @param String key
* @param String member
* @return 返回1成功
* */
public long zrem(String key, String member) {
Jedis jedis = getJedis();
long s = jedis.zrem(key, member);
returnJedis(jedis);
return s;
}
/**
* 删除
* @param key
* @return
*/
public long zrem(String key) {
Jedis jedis = getJedis();
long s = jedis.del(key);
returnJedis(jedis);
return s;
}
/**
* 删除给定位置区间的元素
* @param String key
* @param int start 开始区间，从0开始(包含)
* @param int end 结束区间,-1为最后一个元素(包含)
* @return 删除的数量
* */
public long zremrangeByRank(String key, int start, int end) {
Jedis jedis = getJedis();
long s = jedis.zremrangeByRank(key, start, end);
returnJedis(jedis);
return s;
}
/**
* 删除给定权重区间的元素
* @param String key
* @param double min 下限权重(包含)
* @param double max 上限权重(包含)
* @return 删除的数量
* */
public long zremrangeByScore(String key, double min, double max) {
Jedis jedis = getJedis();
long s = jedis.zremrangeByScore(key, min, max);
returnJedis(jedis);
return s;
}
/**
* 获取给定区间的元素，原始按照权重由高到低排序
* @param String key
* @param int start
* @param int end
* @return Set<String>
* */
public Set<String> zrevrange(String key, int start, int end) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.zrevrange(key, start, end);
returnJedis(sjedis);
return set;
}
/**
* 获取给定值在集合中的权重
* @param String key
* @param memeber
* @return double 权重
* */
public double zscore(String key, String memebr) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Double score = sjedis.zscore(key, memebr);
returnJedis(sjedis);
if (score != null)
return score;
return 0;
}
}
//*******************************************Hash*******************************************//
public class Hash {
/**
* 从hash中删除指定的存储
* @param String key
* @param String fieid 存储的名字
* @return 状态码，1成功，0失败
* */
public long hdel(String key, String fieid) {
Jedis jedis = getJedis();
long s = jedis.hdel(key, fieid);
returnJedis(jedis);
return s;
}
public long hdel(String key) {
Jedis jedis = getJedis();
long s = jedis.del(key);
returnJedis(jedis);
return s;
}
/**
* 测试hash中指定的存储是否存在
* @param String key
* @param String fieid 存储的名字
* @return 1存在，0不存在
* */
public boolean hexists(String key, String fieid) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
boolean s = sjedis.hexists(key, fieid);
returnJedis(sjedis);
return s;
}
/**
* 返回hash中指定存储位置的值
*
* @param String key
* @param String fieid 存储的名字
* @return 存储对应的值
* */
public String hget(String key, String fieid) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String s = sjedis.hget(key, fieid);
returnJedis(sjedis);
return s;
}
public byte[] hget(byte[] key, byte[] fieid) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
byte[] s = sjedis.hget(key, fieid);
returnJedis(sjedis);
return s;
}
/**
* 以Map的形式返回hash中的存储和值
* @param String key
* @return Map<Strinig,String>
* */
public Map<String, String> hgetAll(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Map<String, String> map = sjedis.hgetAll(key);
returnJedis(sjedis);
return map;
}
/**
* 添加一个对应关系
* @param String key
* @param String fieid
* @param String value
* @return 状态码 1成功，0失败，fieid已存在将更新，也返回0
* **/
public long hset(String key, String fieid, String value) {
Jedis jedis = getJedis();
long s = jedis.hset(key, fieid, value);
returnJedis(jedis);
return s;
}
public long hset(String key, String fieid, byte[] value) {
Jedis jedis = getJedis();
long s = jedis.hset(key.getBytes(), fieid.getBytes(), value);
returnJedis(jedis);
return s;
}
/**
* 添加对应关系，只有在fieid不存在时才执行
* @param String key
* @param String fieid
* @param String value
* @return 状态码 1成功，0失败fieid已存
* **/
public long hsetnx(String key, String fieid, String value) {
Jedis jedis = getJedis();
long s = jedis.hsetnx(key, fieid, value);
returnJedis(jedis);
return s;
}
/**
* 获取hash中value的集合
*
* @param String
* key
* @return List<String>
* */
public List<String> hvals(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.hvals(key);
returnJedis(sjedis);
return list;
}
/**
* 在指定的存储位置加上指定的数字，存储位置的值必须可转为数字类型
* @param String key
* @param String fieid 存储位置
* @param String long value 要增加的值,可以是负数
* @return 增加指定数字后，存储位置的值
* */
public long hincrby(String key, String fieid, long value) {
Jedis jedis = getJedis();
long s = jedis.hincrBy(key, fieid, value);
returnJedis(jedis);
return s;
}
/**
* 返回指定hash中的所有存储名字,类似Map中的keySet方法
* @param String key
* @return Set<String> 存储名称的集合
* */
public Set<String> hkeys(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.hkeys(key);
returnJedis(sjedis);
return set;
}
/**
* 获取hash中存储的个数，类似Map中size方法
* @param String key
* @return long 存储的个数
* */
public long hlen(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.hlen(key);
returnJedis(sjedis);
return len;
}
/**
* 根据多个key，获取对应的value，返回List,如果指定的key不存在,List对应位置为null
* @param String key
* @param String ... fieids 存储位置
* @return List<String>
* */
public List<String> hmget(String key, String... fieids) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.hmget(key, fieids);
returnJedis(sjedis);
return list;
}
public List<byte[]> hmget(byte[] key, byte[]... fieids) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<byte[]> list = sjedis.hmget(key, fieids);
returnJedis(sjedis);
return list;
}
/**
* 添加对应关系，如果对应关系已存在，则覆盖
* @param Strin key
* @param Map <String,String> 对应关系
* @return 状态，成功返回OK
* */
public String hmset(String key, Map<String, String> map) {
Jedis jedis = getJedis();
String s = jedis.hmset(key, map);
returnJedis(jedis);
return s;
}
/**
* 添加对应关系，如果对应关系已存在，则覆盖
* @param Strin key
* @param Map <String,String> 对应关系
* @return 状态，成功返回OK
* */
public String hmset(byte[] key, Map<byte[], byte[]> map) {
Jedis jedis = getJedis();
String s = jedis.hmset(key, map);
returnJedis(jedis);
return s;
}
}
//*******************************************Strings*******************************************//
public class Strings {
/**
* 根据key获取记录
* @param String key
* @return 值
* */
public String get(String key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String value = sjedis.get(key);
returnJedis(sjedis);
return value;
}
/**
* 根据key获取记录
* @param byte[] key
* @return 值
* */
public byte[] get(byte[] key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
byte[] value = sjedis.get(key);
returnJedis(sjedis);
return value;
}
/**
* 添加有过期时间的记录
*
* @param String key
* @param int seconds 过期时间，以秒为单位
* @param String value
* @return String 操作状态
* */
public String setEx(String key, int seconds, String value) {
Jedis jedis = getJedis();
String str = jedis.setex(key, seconds, value);
returnJedis(jedis);
return str;
}
/**
* 添加有过期时间的记录
*
* @param String key
* @param int seconds 过期时间，以秒为单位
* @param String value
* @return String 操作状态
* */
public String setEx(byte[] key, int seconds, byte[] value) {
Jedis jedis = getJedis();
String str = jedis.setex(key, seconds, value);
returnJedis(jedis);
return str;
}
/**
* 添加一条记录，仅当给定的key不存在时才插入
* @param String key
* @param String value
* @return long 状态码，1插入成功且key不存在，0未插入，key存在
* */
public long setnx(String key, String value) {
Jedis jedis = getJedis();
long str = jedis.setnx(key, value);
returnJedis(jedis);
return str;
}
/**
* 添加记录,如果记录已存在将覆盖原有的value
* @param String key
* @param String value
* @return 状态码
* */
public String set(String key, String value) {
return set(SafeEncoder.encode(key), SafeEncoder.encode(value));
}
/**
* 添加记录,如果记录已存在将覆盖原有的value
* @param String key
* @param String value
* @return 状态码
* */
public String set(String key, byte[] value) {
return set(SafeEncoder.encode(key), value);
}
/**
* 添加记录,如果记录已存在将覆盖原有的value
* @param byte[] key
* @param byte[] value
* @return 状态码
* */
public String set(byte[] key, byte[] value) {
Jedis jedis = getJedis();
String status = jedis.set(key, value);
returnJedis(jedis);
return status;
}
/**
* 从指定位置开始插入数据，插入的数据会覆盖指定位置以后的数据<br/>
* 例:String str1="123456789";<br/>
* 对str1操作后setRange(key,4,0000)，str1="123400009";
* @param String key
* @param long offset
* @param String value
* @return long value的长度
* */
public long setRange(String key, long offset, String value) {
Jedis jedis = getJedis();
long len = jedis.setrange(key, offset, value);
returnJedis(jedis);
return len;
}
/**
* 在指定的key中追加value
* @param String key
* @param String value
* @return long 追加后value的长度
* **/
public long append(String key, String value) {
Jedis jedis = getJedis();
long len = jedis.append(key, value);
returnJedis(jedis);
return len;
}
/**
* 将key对应的value减去指定的值，只有value可以转为数字时该方法才可用
* @param String key
* @param long number 要减去的值
* @return long 减指定值后的值
* */
public long decrBy(String key, long number) {
Jedis jedis = getJedis();
long len = jedis.decrBy(key, number);
returnJedis(jedis);
return len;
}
/**
* <b>可以作为获取唯一id的方法</b><br/>
* 将key对应的value加上指定的值，只有value可以转为数字时该方法才可用
* @param String key
* @param long number 要减去的值
* @return long 相加后的值
* */
public long incrBy(String key, long number) {
Jedis jedis = getJedis();
long len = jedis.incrBy(key, number);
returnJedis(jedis);
return len;
}
/**
* 对指定key对应的value进行截取
* @param String key
* @param long startOffset 开始位置(包含)
* @param long endOffset 结束位置(包含)
* @return String 截取的值
* */
public String getrange(String key, long startOffset, long endOffset) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String value = sjedis.getrange(key, startOffset, endOffset);
returnJedis(sjedis);
return value;
}
/**
* 获取并设置指定key对应的value<br/>
* 如果key存在返回之前的value,否则返回null
* @param String key
* @param String value
* @return String 原始value或null
* */
public String getSet(String key, String value) {
Jedis jedis = getJedis();
String str = jedis.getSet(key, value);
returnJedis(jedis);
return str;
}
/**
* 批量获取记录,如果指定的key不存在返回List的对应位置将是null
* @param String keys
* @return List<String> 值得集合
* */
public List<String> mget(String... keys) {
Jedis jedis = getJedis();
List<String> str = jedis.mget(keys);
returnJedis(jedis);
return str;
}
/**
* 批量存储记录
* @param String keysvalues 例:keysvalues="key1","value1","key2","value2";
* @return String 状态码
* */
public String mset(String... keysvalues) {
Jedis jedis = getJedis();
String str = jedis.mset(keysvalues);
returnJedis(jedis);
return str;
}
/**
* 获取key对应的值的长度
* @param String key
* @return value值得长度
* */
public long strlen(String key) {
Jedis jedis = getJedis();
long len = jedis.strlen(key);
returnJedis(jedis);
return len;
}
}
//*******************************************Lists*******************************************//
public class Lists {
/**
* List长度
* @param String key
* @return 长度
* */
public long llen(String key) {
return llen(SafeEncoder.encode(key));
}
/**
* List长度
* @param byte[] key
* @return 长度
* */
public long llen(byte[] key) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long count = sjedis.llen(key);
returnJedis(sjedis);
return count;
}
/**
* 覆盖操作,将覆盖List中指定位置的值
* @param byte[] key
* @param int index 位置
* @param byte[] value 值
* @return 状态码
* */
public String lset(byte[] key, int index, byte[] value) {
Jedis jedis = getJedis();
String status = jedis.lset(key, index, value);
returnJedis(jedis);
return status;
}
/**
* 覆盖操作,将覆盖List中指定位置的值
* @param key
* @param int index 位置
* @param String value 值
* @return 状态码
* */
public String lset(String key, int index, String value) {
return lset(SafeEncoder.encode(key), index,
SafeEncoder.encode(value));
}
/**
* 在value的相对位置插入记录
* @param key
* @param LIST_POSITION 前面插入或后面插入
* @param String pivot 相对位置的内容
* @param String value 插入的内容
* @return 记录总数
* */
public long linsert(String key, LIST_POSITION where, String pivot,
String value) {
return linsert(SafeEncoder.encode(key), where,
SafeEncoder.encode(pivot), SafeEncoder.encode(value));
}
/**
* 在指定位置插入记录
* @param String key
* @param LIST_POSITION 前面插入或后面插入
* @param byte[] pivot 相对位置的内容
* @param byte[] value 插入的内容
* @return 记录总数
* */
public long linsert(byte[] key, LIST_POSITION where, byte[] pivot,
byte[] value) {
Jedis jedis = getJedis();
long count = jedis.linsert(key, where, pivot, value);
returnJedis(jedis);
return count;
}
/**
* 获取List中指定位置的值
* @param String key
* @param int index 位置
* @return 值
* **/
public String lindex(String key, int index) {
return SafeEncoder.encode(lindex(SafeEncoder.encode(key), index));
}
/**
* 获取List中指定位置的值
* @param byte[] key
* @param int index 位置
* @return 值
* **/
public byte[] lindex(byte[] key, int index) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
byte[] value = sjedis.lindex(key, index);
returnJedis(sjedis);
return value;
}
/**
* 将List中的第一条记录移出List
* @param String key
* @return 移出的记录
* */
public String lpop(String key) {
return SafeEncoder.encode(lpop(SafeEncoder.encode(key)));
}
/**
* 将List中的第一条记录移出List
* @param byte[] key
* @return 移出的记录
* */
public byte[] lpop(byte[] key) {
Jedis jedis = getJedis();
byte[] value = jedis.lpop(key);
returnJedis(jedis);
return value;
}
/**
* 将List中最后第一条记录移出List
*
* @param byte[] key
* @return 移出的记录
* */
public String rpop(String key) {
Jedis jedis = getJedis();
String value = jedis.rpop(key);
returnJedis(jedis);
return value;
}
/**
* 向List尾部追加记录
* @param String key
* @param String value
* @return 记录总数
* */
public long lpush(String key, String value) {
return lpush(SafeEncoder.encode(key), SafeEncoder.encode(value));
}
/**
* 向List头部追加记录
* @param String key
* @param String value
* @return 记录总数
* */
public long rpush(String key, String value) {
Jedis jedis = getJedis();
long count = jedis.rpush(key, value);
returnJedis(jedis);
return count;
}
/**
* 向List头部追加记录
* @param String key
* @param String value
* @return 记录总数
* */
public long rpush(byte[] key, byte[] value) {
Jedis jedis = getJedis();
long count = jedis.rpush(key, value);
returnJedis(jedis);
return count;
}
/**
* 向List中追加记录
* @param byte[] key
* @param byte[] value
* @return 记录总数
* */
public long lpush(byte[] key, byte[] value) {
Jedis jedis = getJedis();
long count = jedis.lpush(key, value);
returnJedis(jedis);
return count;
}
/**
* 获取指定范围的记录，可以做为分页使用
* @param String key
* @param long start
* @param long end
* @return List
* */
public List<String> lrange(String key, long start, long end) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.lrange(key, start, end);
returnJedis(sjedis);
return list;
}
/**
* 获取指定范围的记录，可以做为分页使用
* @param byte[] key
* @param int start
* @param int end 如果为负数，则尾部开始计算
* @return List
* */
public List<byte[]> lrange(byte[] key, int start, int end) {
//ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<byte[]> list = sjedis.lrange(key, start, end);
returnJedis(sjedis);
return list;
}
/**
* 删除List中c条记录，被删除的记录值为value
* @param byte[] key
* @param int c 要删除的数量，如果为负数则从List的尾部检查并删除符合的记录
* @param byte[] value 要匹配的值
* @return 删除后的List中的记录数
* */
public long lrem(byte[] key, int c, byte[] value) {
Jedis jedis = getJedis();
long count = jedis.lrem(key, c, value);
returnJedis(jedis);
return count;
}
/**
* 删除List中c条记录，被删除的记录值为value
* @param String key
* @param int c 要删除的数量，如果为负数则从List的尾部检查并删除符合的记录
* @param String value 要匹配的值
* @return 删除后的List中的记录数
* */
public long lrem(String key, int c, String value) {
return lrem(SafeEncoder.encode(key), c, SafeEncoder.encode(value));
}
/**
* 算是删除吧，只保留start与end之间的记录
* @param byte[] key
* @param int start 记录的开始位置(0表示第一条记录)
* @param int end 记录的结束位置（如果为-1则表示最后一个，-2，-3以此类推）
* @return 执行状态码
* */
public String ltrim(byte[] key, int start, int end) {
Jedis jedis = getJedis();
String str = jedis.ltrim(key, start, end);
returnJedis(jedis);
return str;
}
/**
* 算是删除吧，只保留start与end之间的记录
* @param String key
* @param int start 记录的开始位置(0表示第一条记录)
* @param int end 记录的结束位置（如果为-1则表示最后一个，-2，-3以此类推）
* @return 执行状态码
* */
public String ltrim(String key, int start, int end) {
return ltrim(SafeEncoder.encode(key), start, end);
}
}
public static void main(String[] args) {
JedisUtil jedisUtil= JedisUtil.getInstance();
JedisUtil.Strings strings=jedisUtil.new Strings();
strings.set("nnn", "nnnn");
System.out.println("-----"+strings.get("nnn"));
Jedis jedis=JedisUtil.getInstance().getJedis();
for (int i = 0; i < 10; i++) {
jedis.set("test", "test");
System.out.println(i+"=="+jedis.get("test"));
}
JedisUtil.getInstance().returnJedis(jedis);
}
}
2、序列化、反序列化：
redis服务器本身支持二进制安全的类型，所以可以把一个java对象序列化后存储到redis中。下面封装了一个序列化、反序列化的工具类：
package redis.utils;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
public class SerializeUtil {
/**
* 序列化
*
* @param object
* @return
*/
public static byte[] serialize(Object object) {
ObjectOutputStream oos = null;
ByteArrayOutputStream baos = null;
try {
// 序列化
baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(object);
byte[] bytes = baos.toByteArray();
return bytes;
} catch (Exception e) {
}
return null;
}
/**
* 反序列化
*
* @param bytes
* @return
*/
public static Object unserialize(byte[] bytes) {
ByteArrayInputStream bais = null;
try {
// 反序列化
bais = new ByteArrayInputStream(bytes);
ObjectInputStream ois = new ObjectInputStream(bais);
return ois.readObject();
} catch (Exception e) {
}
return null;
}
}
3、测试：
1）直接使用RedisUtils实例进行五大数据类型的操作：（这样，使用完后会自动归还到池子中）
JedisUtil jedisUtil= JedisUtil.getInstance();
JedisUtil.Strings strings=jedisUtil.new Strings();
strings.set("nnn", "nnnn");
System.out.println("-----"+strings.get("nnn"));
2）通过RedisUtil实例获取Jedis连接对象；这样就可以用原生的方式使用；最后使用完后需要手动将其归还到池子中：
Jedis jedis=JedisUtil.getInstance().getJedis();
for (int i = 0; i < 10; i++) {
jedis.set("test", "test");
System.out.println(i+"=="+jedis.get("test"));
}
JedisUtil.getInstance().returnJedis(jedis);
3）将java对象存到redis中：
Person p = new Person();
p.setId(3);
p.setName("测试");
JedisUtil.Strings strings=jedisUtil.new Strings();
strings.set("object3", SerializeUtil.serialize(p));
//jedis.set(SafeEncoder.encode("object1"),SerializeUtil.serialize(p));
byte[] personBy = jedis.get(SafeEncoder.encode("object3"));
Person p1 = (Person) SerializeUtil.unserialize(personBy);
System.out.println(p1.getName());
与spring集成的配置
简单对工具类做些修改即可
application-redis.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<context:property-placeholder location="classpath:redis.properties"></context:property-placeholder>
<!-- redis配置:CHenYaO -->
<!-- 注解扫描 -->
<context:component-scan base-package="com.xiaoye.aspect.annotation.redis"></context:component-scan>
<!-- jedis连接池配置 -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!-- 最小空闲连接数 -->
<property name="minIdle" value="${redis.minIdle}"/>
<!-- 最大空闲连接数 -->
<property name="maxIdle" value="${redis.maxIdle}"/>
<!-- 最大连接数 -->
<property name="maxTotal" value="${redis.maxTotal}"/>
<!-- 获取连接时的最大等待毫秒数,小于零:阻塞不确定的时间,默认-1 -->
<property name="maxWaitMillis" value="${redis.maxWaitMillis}"/>
<!-- 在获取连接的时候检查有效性, 默认false -->
<property name="testOnBorrow" value="${redis.testOnBorrow}"/>
<!-- 每次释放连接的最大数目 -->
<property name="numTestsPerEvictionRun" value="${redis.numTestsPerEvictionRun}"/>
<!-- 释放连接的扫描间隔（毫秒） -->
<property name="timeBetweenEvictionRunsMillis" value="${redis.timeBetweenEvictionRunsMillis}"/>
<!-- 连接最小空闲时间 -->
<property name="minEvictableIdleTimeMillis" value="${redis.minEvictableIdleTimeMillis}"/>
<!-- 连接空闲多久后释放, 当空闲时间>该值 且 空闲连接>最大空闲连接数 时直接释放 -->
<property name="softMinEvictableIdleTimeMillis" value="${redis.softMinEvictableIdleTimeMillis}"/>
<!-- 在空闲时检查有效性, 默认false -->
<property name="testWhileIdle" value="${redis.testWhileIdle}"/>
<!-- 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true -->
<property name="blockWhenExhausted" value="${redis.blockWhenExhausted}"/>
</bean>
<!-- redis连接池 -->
<bean id="jedisPool" class="redis.clients.jedis.JedisPool">
<constructor-arg index="0" ref="jedisPoolConfig"/>
<constructor-arg index="1" value="${redis.host}"/>
<constructor-arg index="2" value="${redis.port}"/>
<constructor-arg index="3" value="${redis.timeout}"/>
<constructor-arg index="4" value="${redis.auth}"/>
<constructor-arg index="5" value="${redis.cache.database}"/>
</bean>
<!-- redis连接工厂 -->
<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.host}"></property>
<property name="port" value="${redis.port}"></property>
<!--<property name="password" value="${redis.pass}"></property>-->
<property name="timeout" value="${redis.timeout}"></property>
<property name="poolConfig" ref="jedisPoolConfig"></property>
</bean>
<!-- 创建Redis连接池，并做相关配置 -->
<bean id="jedisWritePool" class="com.xiaoye.redis.JedisPoolWriper"
depends-on="jedisPoolConfig">
<constructor-arg index="0" ref="jedisPoolConfig"/>
<constructor-arg index="1" value="${redis.host}"/>
<constructor-arg index="2" value="${redis.port}" type="int"/>
</bean>
<!-- 创建Redis工具类，封装好Redis的连接以进行相关的操作 -->
<bean id="jedisUtil" class="com.xiaoye.redis.JedisUtil" scope="singleton">
<property name="jedisPool">
<ref bean="jedisWritePool"/>
</property>
</bean>
<!-- Redis的key操作 -->
<bean id="jedisKeys" class="com.xiaoye.redis.JedisUtil$Keys"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<!-- Redis的Strings操作 -->
<bean id="jedisStrings" class="com.xiaoye.redis.JedisUtil$Strings"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<!-- Redis的Lists操作 -->
<bean id="jedisLists" class="com.xiaoye.redis.JedisUtil$Lists"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<!-- Redis的Sets操作 -->
<bean id="jedisSets" class="com.xiaoye.redis.JedisUtil$Sets"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<!-- Redis的HashMap操作 -->
<bean id="jedisHash" class="com.xiaoye.redis.JedisUtil$Hash"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<!-- redis操作模板，这里采用尽量面向对象的模板 -->
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"
p:connection-factory-ref="jedisConnectionFactory">
<!-- 开启事务 -->
<property name="enableTransactionSupport" value="true"></property>
<!--以下针对各种数据进行序列化方式的选择-->
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="valueSerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="hashKeySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="hashValueSerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
</bean>
<!-- jedis集群版配置 -->
<bean id="jedisCluster" class="redis.clients.jedis.JedisCluster">
<constructor-arg name="poolConfig" ref="jedisPoolConfig"></constructor-arg>
<constructor-arg name="nodes">
<set>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="127.0.0.1"></constructor-arg>
<constructor-arg name="port" value="7001"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="127.0.0.1"></constructor-arg>
<constructor-arg name="port" value="7002"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="127.0.0.1"></constructor-arg>
<constructor-arg name="port" value="7003"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="127.0.0.1"></constructor-arg>
<constructor-arg name="port" value="7004"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="127.0.0.1"></constructor-arg>
<constructor-arg name="port" value="7005"></constructor-arg>
</bean>
</set>
</constructor-arg>
</bean>
</beans>
redis.properties
redis.uri=redis://:@127.0.0.1:6379/0
#host地址
redis.host=127.0.0.1
#端口
redis.port=6379
redis.auth=
#redis settings
redis.minIdle=5
redis.maxIdle=10
redis.maxTotal=50
redis.timeout=2000
redis.maxWaitMillis=1500
redis.testOnBorrow=true
redis.numTestsPerEvictionRun=1024
redis.timeBetweenEvictionRunsMillis=30000
redis.minEvictableIdleTimeMillis=1800000
redis.softMinEvictableIdleTimeMillis=10000
redis.testWhileIdle=true
redis.blockWhenExhausted=false
redis.expiration=600
# ==============================================
# =============== CACHE OPTIONS ===============
# ==============================================
# determine the cache is opened or not
# options: enable,disable
redis.cache.enable=enable
# redis database range is 1-16
redis.cache.database=2
# determine the cache expire is opened or not
# options: enable,disable
redis.cache.expire.default.enable=enable
# The time cache exists
redis.cache.expire.default.seconds=1800
#===============================================