今天是521，作为单身狗屌丝一枚，还是像往常一样没任何感觉，好悲哀。不多说，进入今天的redis学习之Jedis使用线程池封装redis的基本操作及spring的简单封装。例子都是整理好的，供工作学习只需
一、Jedis使用线程池封装redis的基本操作
redis客户端jedis常用的操作：key value,hash,list,set,zset的基本操作；
package util;
import java.util.List;
import java.util.Map;
import java.util.Set;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.BinaryClient.LIST_POSITION;
/**
* <p>redis通用工具类</p>
*
*/
publicclass RedisUtil {
private JedisPoolpool =null;
/**
* <p>传入ip和端口号构建redis连接池</p>
* @param ipip
* @param prot端口
*/
public RedisUtil(String ip,int prot) {
if (pool ==null) {
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.setMaxActive(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.setMaxWait(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);
// pool =new JedisPool(config, "192.168.161.130", 6379, 100000);
pool =new JedisPool(config, ip, prot, 100000);
}
}
/**
* <p>通过配置对象 ip 端口构建连接池</p>
* @param config配置对象
* @param ipip
* @param prot端口
*/
public RedisUtil(JedisPoolConfig config ,String ip,int prot){
if (pool ==null) {
pool =new JedisPool(config,ip,prot,10000);
}
}
/**
* <p>通过配置对象 ip 端口超时时间构建连接池</p>
* @param config配置对象
* @param ipip
* @param prot端口
* @param timeout超时时间
*/
public RedisUtil(JedisPoolConfig config ,String ip,int prot ,int timeout){
if (pool ==null) {
pool =new JedisPool(config,ip,prot,timeout);
}
}
/**
* <p>通过连接池对象构建一个连接池</p>
* @param pool连接池对象
*/
public RedisUtil(JedisPool pool){
if (this.pool == null) {
this.pool = pool;
}
}
/**
* <p>通过key获取储存在redis中的value</p>
* <p>并释放连接</p>
* @param key
* @return成功返回value失败返回null
*/
public String get(String key){
Jedis jedis = null;
String value = null;
try {
jedis = pool.getResource();
value = jedis.get(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return value;
}
/**
* <p>向redis存入key和value,并释放连接资源</p>
* <p>如果key已经存在则覆盖</p>
* @param key
* @param value
* @return成功返回OK失败返回 0
*/
public String set(String key,String value){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.set(key, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return"0";
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>删除指定的key,也可以传入一个包含key的数组</p>
* @param keys一个key 也可以使 string数组
* @return返回删除成功的个数
*/
public Long del(String...keys){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.del(keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>通过key向指定的value值追加值</p>
* @param key
* @param str
* @return成功返回添加后value的长度失败返回添加的 value 的长度 异常返回0L
*/
public Long append(String key ,String str){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.append(key, str);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return 0L;
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>判断key是否存在</p>
* @param key
* @return true OR false
*/
public Boolean exists(String key){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.exists(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
returnfalse;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>设置key value,如果key已经存在则返回0,nx==> not exist</p>
* @param key
* @param value
* @return成功返回1如果存在和发生异常返回 0
*/
public Long setnx(String key ,String value){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.setnx(key, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>设置key value并制定这个键值的有效期</p>
* @param key
* @param value
* @param seconds单位:秒
* @return成功返回OK失败和异常返回null
*/
public String setex(String key,String value,int seconds){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.setex(key, seconds, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 和offset 从指定的位置开始将原先value替换</p>
* <p>下标从0开始,offset表示从offset下标开始替换</p>
* <p>如果替换的字符串长度过小则会这样</p>
* <p>example:</p>
* <p>value : bigsea@zto.cn</p>
* <p>str :abc</p>
* <P>从下标7开始替换 则结果为</p>
* <p>RES : bigsea.abc.cn</p>
* @param key
* @param str
* @param offset下标位置
* @return返回替换后 value的长度
*/
public Long setrange(String key,String str,int offset){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.setrange(key, offset,str);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>通过批量的key获取批量的value</p>
* @param keys string数组也可以是一个key
* @return成功返回value的集合,失败返回null的集合 ,异常返回空
*/
public List<String> mget(String...keys){
Jedis jedis = null;
List<String> values = null;
try {
jedis = pool.getResource();
values = jedis.mget(keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return values;
}
/**
* <p>批量的设置key:value,可以一个</p>
* <p>example:</p>
* <p> obj.mset(newString[]{"key2","value1","key2","value2"})</p>
* @param keysvalues
* @return成功返回OK失败异常返回 null
*
*/
public String mset(String...keysvalues){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.mset(keysvalues);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>批量的设置key:value,可以一个,如果key已经存在则会失败,操作会回滚</p>
* <p>example:</p>
* <p> obj.msetnx(newString[]{"key2","value1","key2","value2"})</p>
* @param keysvalues
* @return成功返回1失败返回0
*/
public Long msetnx(String...keysvalues){
Jedis jedis = null;
Long res = 0L;
try {
jedis = pool.getResource();
res =jedis.msetnx(keysvalues);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>设置key的值,并返回一个旧值</p>
* @param key
* @param value
* @return旧值如果key不存在则返回null
*/
public String getset(String key,String value){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.getSet(key, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过下标和key获取指定下标位置的 value</p>
* @param key
* @param startOffset开始位置从0开始负数表示从右边开始截取
* @param endOffset
* @return如果没有返回null
*/
public String getrange(String key,int startOffset ,int endOffset){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.getrange(key, startOffset,endOffset);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 对value进行加值+1操作,当value不是int类型时会返回错误,当key不存在是则value为1</p>
* @param key
* @return加值后的结果
*/
public Long incr(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.incr(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给指定的value加值,如果key不存在,则这是value为该值</p>
* @param key
* @param integer
* @return
*/
public Long incrBy(String key,Long integer){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.incrBy(key, integer);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>对key的值做减减操作,如果key不存在,则设置key为-1</p>
* @param key
* @return
*/
public Long decr(String key) {
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.decr(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>减去指定的值</p>
* @param key
* @param integer
* @return
*/
public Long decrBy(String key,Long integer){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.decrBy(key, integer);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取value值的长度</p>
* @param key
* @return失败返回null
*/
public Long serlen(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.strlen(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给field设置指定的值,如果key不存在,则先创建</p>
* @param key
* @param field字段
* @param value
* @return如果存在返回0异常返回null
*/
public Long hset(String key,String field,String value) {
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hset(key, field, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给field设置指定的值,如果key不存在则先创建,如果field已经存在,返回0</p>
* @param key
* @param field
* @param value
* @return
*/
public Long hsetnx(String key,String field,String value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hsetnx(key, field, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key同时设置 hash的多个field</p>
* @param key
* @param hash
* @return返回OK异常返回null
*/
public String hmset(String key,Map<String, String> hash){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.hmset(key, hash);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 和 field 获取指定的 value</p>
* @param key
* @param field
* @return没有返回null
*/
public String hget(String key, String field){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.hget(key, field);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 和 fields 获取指定的value如果没有对应的value则返回null</p>
* @param key
* @param fields可以使一个String也可以是 String数组
* @return
*/
public List<String> hmget(String key,String...fields){
Jedis jedis = null;
List<String> res = null;
try {
jedis = pool.getResource();
res = jedis.hmget(key, fields);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给指定的field的value加上给定的值</p>
* @param key
* @param field
* @param value
* @return
*/
public Long hincrby(String key ,String field ,Long value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hincrBy(key, field, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key和field判断是否有指定的value存在</p>
* @param key
* @param field
* @return
*/
public Boolean hexists(String key , String field){
Jedis jedis = null;
Boolean res = false;
try {
jedis = pool.getResource();
res = jedis.hexists(key, field);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回field的数量</p>
* @param key
* @return
*/
public Long hlen(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hlen(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 删除指定的 field </p>
* @param key
* @param fields可以是一个 field也可以是一个数组
* @return
*/
public Long hdel(String key ,String...fields){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hdel(key, fields);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有的field</p>
* @param key
* @return
*/
public Set<String> hkeys(String key){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.hkeys(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有和key有关的value</p>
* @param key
* @return
*/
public List<String> hvals(String key){
Jedis jedis = null;
List<String> res = null;
try {
jedis = pool.getResource();
res = jedis.hvals(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取所有的field和value</p>
* @param key
* @return
*/
public Map<String, String> hgetall(String key){
Jedis jedis = null;
Map<String, String> res = null;
try {
jedis = pool.getResource();
res = jedis.hgetAll(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向list头部添加字符串</p>
* @param key
* @param strs可以使一个string也可以使string数组
* @return返回list的value个数
*/
public Long lpush(String key ,String...strs){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.lpush(key, strs);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向list尾部添加字符串</p>
* @param key
* @param strs可以使一个string也可以使string数组
* @return返回list的value个数
*/
public Long rpush(String key ,String...strs){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.rpush(key, strs);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key在list指定的位置之前或者之后添加字符串元素</p>
* @param key
* @param where LIST_POSITION枚举类型
* @param pivot list里面的value
* @param value添加的value
* @return
*/
public Long linsert(String key, LIST_POSITION where,
String pivot, String value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.linsert(key, where, pivot,value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key设置list指定下标位置的value</p>
* <p>如果下标超过list里面value的个数则报错</p>
* @param key
* @param index从0开始
* @param value
* @return成功返回OK
*/
public String lset(String key ,Long index, String value){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.lset(key, index, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从对应的list中删除指定的count个和 value相同的元素</p>
* @param key
* @param count当count为0时删除全部
* @param value
* @return返回被删除的个数
*/
public Long lrem(String key,long count,String value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.lrem(key, count, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key保留list中从strat下标开始到end下标结束的value值</p>
* @param key
* @param start
* @param end
* @return成功返回OK
*/
public String ltrim(String key ,long start ,long end){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.ltrim(key, start, end);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从list的头部删除一个value,并返回该value</p>
* @param key
* @return
*/
public String lpop(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.lpop(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从list尾部删除一个value,并返回该元素</p>
* @param key
* @return
*/
public String rpop(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.rpop(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从一个list的尾部删除一个value并添加到另一个list的头部,并返回该value</p>
* <p>如果第一个list为空或者不存在则返回null</p>
* @param srckey
* @param dstkey
* @return
*/
public String rpoplpush(String srckey, String dstkey){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.rpoplpush(srckey, dstkey);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取list中指定下标位置的value</p>
* @param key
* @param index
* @return如果没有返回null
*/
public String lindex(String key,long index){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.lindex(key, index);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回list的长度</p>
* @param key
* @return
*/
public Long llen(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.llen(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取list指定下标位置的value</p>
* <p>如果start 为 0 end 为-1则返回全部的list中的value</p>
* @param key
* @param start
* @param end
* @return
*/
public List<String> lrange(String key,long start,long end){
Jedis jedis = null;
List<String> res = null;
try {
jedis = pool.getResource();
res = jedis.lrange(key, start, end);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向指定的set中添加value</p>
* @param key
* @param members可以是一个String也可以是一个String数组
* @return添加成功的个数
*/
public Long sadd(String key,String...members){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sadd(key, members);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除set中对应的value值</p>
* @param key
* @param members可以是一个String也可以是一个String数组
* @return删除的个数
*/
public Long srem(String key,String...members){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.srem(key, members);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key随机删除一个set中的value并返回该值</p>
* @param key
* @return
*/
public String spop(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.spop(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中的差集</p>
* <p>以第一个set为标准</p>
* @param keys可以使一个string则返回set中所有的value也可以是string数组
* @return
*/
public Set<String> sdiff(String...keys){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.sdiff(keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中的差集并存入到另一个key中</p>
* <p>以第一个set为标准</p>
* @param dstkey差集存入的key
* @param keys可以使一个string则返回set中所有的value也可以是string数组
* @return
*/
public Long sdiffstore(String dstkey,String... keys){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sdiffstore(dstkey, keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取指定set中的交集</p>
* @param keys可以使一个string也可以是一个string数组
* @return
*/
public Set<String> sinter(String...keys){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.sinter(keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取指定set中的交集并将结果存入新的set中</p>
* @param dstkey
* @param keys可以使一个string也可以是一个string数组
* @return
*/
public Long sinterstore(String dstkey,String...keys){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sinterstore(dstkey, keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有set的并集</p>
* @param keys可以使一个string也可以是一个string数组
* @return
*/
public Set<String> sunion(String... keys){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.sunion(keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有set的并集,并存入到新的set中</p>
* @param dstkey
* @param keys可以使一个string也可以是一个string数组
* @return
*/
public Long sunionstore(String dstkey,String...keys){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sunionstore(dstkey, keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key将set中的value移除并添加到第二个set中</p>
* @param srckey需要移除的
* @param dstkey添加的
* @param member set中的value
* @return
*/
public Long smove(String srckey, String dstkey, String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.smove(srckey, dstkey,member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中value的个数</p>
* @param key
* @return
*/
public Long scard(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.scard(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key判断value是否是set中的元素</p>
* @param key
* @param member
* @return
*/
public Boolean sismember(String key,String member){
Jedis jedis = null;
Boolean res = null;
try {
jedis = pool.getResource();
res = jedis.sismember(key, member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中随机的value,不删除元素</p>
* @param key
* @return
*/
public String srandmember(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.srandmember(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中所有的value</p>
* @param key
* @return
*/
public Set<String> smembers(String key){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.smembers(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向zset中添加value,score,其中score就是用来排序的</p>
* <p>如果该value已经存在则根据score更新元素</p>
* @param key
* @param scoreMembers
* @return
*/
public Long zadd(String key,Map<Double, String>scoreMembers){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zadd(key, scoreMembers);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向zset中添加value,score,其中score就是用来排序的</p>
* <p>如果该value已经存在则根据score更新元素</p>
* @param key
* @param score
* @param member
* @return
*/
public Long zadd(String key,double score,String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zadd(key, score, member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除在zset中指定的value</p>
* @param key
* @param members可以使一个string也可以是一个string数组
* @return
*/
public Long zrem(String key,String...members){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zrem(key, members);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key增加该zset中value的score的值</p>
* @param key
* @param score
* @param member
* @return
*/
public Double zincrby(String key ,double score ,String member){
Jedis jedis = null;
Double res = null;
try {
jedis = pool.getResource();
res = jedis.zincrby(key, score, member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回zset中value的排名</p>
* <p>下标从小到大排序</p>
* @param key
* @param member
* @return
*/
public Long zrank(String key,String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zrank(key, member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回zset中value的排名</p>
* <p>下标从大到小排序</p>
* @param key
* @param member
* @return
*/
public Long zrevrank(String key,String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrank(key, member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key将获取score从start到end中zset的value</p>
* <p>socre从大到小排序</p>
* <p>当start为0 end为-1时返回全部</p>
* @param key
* @param start
* @param end
* @return
*/
public Set<String> zrevrange(String key ,long start ,long end){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrange(key, start, end);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回指定score内zset中的value</p>
* @param key
* @param max
* @param min
* @return
*/
public Set<String> zrangebyscore(String key,Stringmax,String min){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrangeByScore(key, max,min);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回指定score内zset中的value</p>
* @param key
* @param max
* @param min
* @return
*/
public Set<String> zrangeByScore(String key ,double max,double min){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res =jedis.zrevrangeByScore(key,max,min);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>返回指定区间内zset中value的数量</p>
* @param key
* @param min
* @param max
* @return
*/
public Long zcount(String key,String min,String max){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zcount(key, min, max);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回zset中的value个数</p>
* @param key
* @return
*/
public Long zcard(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zcard(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取zset中value的score值</p>
* @param key
* @param member
* @return
*/
public Double zscore(String key,String member){
Jedis jedis = null;
Double res = null;
try {
jedis = pool.getResource();
res = jedis.zscore(key, member);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除给定区间内的元素</p>
* @param key
* @param start
* @param end
* @return
*/
public Long zremrangeByRank(String key ,long start, long end){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zremrangeByRank(key, start,end);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除指定score内的元素</p>
* @param key
* @param start
* @param end
* @return
*/
public Long zremrangeByScore(String key,double start,double end){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zremrangeByScore(key, start,end);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>返回满足pattern表达式的所有key</p>
* <p>keys(*)</p>
* <p>返回所有的key</p>
* @param pattern
* @return
*/
public Set<String> keys(String pattern){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.keys(pattern);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key判断值得类型</p>
* @param key
* @return
*/
public String type(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.type(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* 返还到连接池
*
* @param pool
* @param redis
*/
publicstaticvoid returnResource(JedisPool pool, Jedis jedis) {
if (jedis !=null) {
pool.returnResource(jedis);
}
}
//此处之测试两个
public staticvoid main(String[]args)throws Exception{
RedisUtil r = new RedisUtil("192.168.161.130",6379);
String t = r.set("wb","wbwbwb");
String s = r.get("wb");
System.out.println(t+"-----"+s);
}
}测试结果：
二、spring封装redis操作的简单实例
Jedis作为redis的最佳客户端，它提供了连接池的特性，“连接池”在通常情况下可以有效的提高应用的通信能力，并且这是一种良好的设计模式。Jedis的连接池设计基于apache commons-pool原生库，仅作了简单的封装；
a.连接池基本参数详解
- maxActive: 链接池中最大连接数,默认为8.
- maxIdle: 链接池中最大空闲的连接数,默认为8.
- minIdle: 连接池中最少空闲的连接数,默认为0.
- maxWait: 当连接池资源耗尽时，调用者最大阻塞的时间，超时将跑出异常。单位，毫秒数;默认为-1.表示永不超时.
- minEvictableIdleTimeMillis: 连接空闲的最小时间，达到此值后空闲连接将可能会被移除。负值(-1)表示不移除。
- softMinEvictableIdleTimeMillis: 连接空闲的最小时间，达到此值后空闲链接将会被移除，且保留“minIdle”个空闲连接数。默认为-1.
- numTestsPerEvictionRun: 对于“空闲链接”检测线程而言，每次检测的链接资源的个数。默认为3.
- testOnBorrow: 向调用者输出“链接”资源时，是否检测是有有效，如果无效则从连接池中移除，并尝试获取继续获取。默认为false。建议保持默认值.
- testOnReturn: 向连接池“归还”链接时，是否检测“链接”对象的有效性。默认为false。建议保持默认值.
- testWhileIdle: 向调用者输出“链接”对象时，是否检测它的空闲超时；默认为false。如果“链接”空闲超时，将会被移除。建议保持默认值.
- timeBetweenEvictionRunsMillis: “空闲链接”检测线程，检测的周期，毫秒数。如果为负值，表示不运行“检测线程”。默认为-1.
- whenExhaustedAction: 当“连接池”中active数量达到阀值时，即“链接”资源耗尽时，连接池需要采取的手段, 默认为1：
-> 0 : 抛出异常，
-> 1 : 阻塞，直到有可用链接资源
-> 2 : 强制创建新的链接资源
b. 程序实例
beans.xml
<beansxmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd"default-autowire="byName">
<beanid="jedisPoolConfig"class="redis.clients.jedis.JedisPoolConfig">
<propertyname="maxActive"value="32"></property>
<propertyname="maxIdle"value="6"></property>
<propertyname="maxWait"value="15000"></property>
<propertyname="minEvictableIdleTimeMillis"value="300000"></property>
<propertyname="numTestsPerEvictionRun"value="3"></property>
<propertyname="timeBetweenEvictionRunsMillis"value="60000"></property>
<propertyname="whenExhaustedAction"value="1"></property>
</bean>
<beanid="jedisPool"class="redis.clients.jedis.JedisPool"destroy-method="destroy">
<!--config -->
<constructor-argref="jedisPoolConfig"></constructor-arg>
<!-- host -->
<constructor-argvalue="192.168.161.130"></constructor-arg>
<!-- port -->
<constructor-argvalue="6379"></constructor-arg>
<!-- timeout -->
<constructor-argvalue="15000"></constructor-arg>
<!-- password -->
<!-- <constructor-arg value="wb"></constructor-arg>
database index
<constructor-argvalue="12"></constructor-arg> 本人redis未设置密码 -->
</bean>
</beans>
Test.java
importorg.springframework.context.ApplicationContext;
importorg.springframework.context.support.ClassPathXmlApplicationContext;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
public class Test {
publicstatic void main(String[] args) {
//resources/beans.xml
ApplicationContext context = newClassPathXmlApplicationContext("classpath:beans.xml");
JedisPool jedisPool =(JedisPool)context.getBean("jedisPool");
Jedis client =jedisPool.getResource();
try{
client.select(0);
client.set("dddd","sss");
System.out.println(client.get("dddd"));
}catch(Exception e){
e.printStackTrace();
}finally{
jedisPool.returnResource(client);//mustbe
}
}
}测试结果：
上面使用spring配置的方式获得连接池，也可以直接获得连接池，如下例：
PoolTestMain.java
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
publicclassPoolTestMain{
publicstaticvoid main(String[] args) {
JedisPoolConfig config =newJedisPoolConfig();
config.setMaxActive(32);
config.setMaxIdle(6);
config.setMinIdle(0);
config.setMaxWait(15000L);
config.setMinEvictableIdleTimeMillis(300000L);
config.setSoftMinEvictableIdleTimeMillis(-1L);
config.setNumTestsPerEvictionRun(3);
config.setTestOnBorrow(false);
config.setTestOnReturn(false);
config.setTestWhileIdle(false);
config.setTimeBetweenEvictionRunsMillis(60000L);//一分钟
config.setWhenExhaustedAction((byte)1);
// JedisPool pool = new JedisPool(config,"192.168.161.130",6379,15000,"wb",12);
JedisPool pool = new JedisPool(config,"192.168.161.130", 6379, 15000);
Jedis client = pool.getResource();//从pool中获取资源
try{
client.select(0);
client.set("k1","v1");
System.out.println(client.get("k1"));
}catch(Exception e){
e.printStackTrace();
}finally{
pool.returnResource(client);//向连接池“归还”资源，千万不要忘记。
}
}
}测试结果：
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